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arXiv:1303.6632
Date: Tue, 26 Mar 2013 20:00:01 GMT   (2878kb,D)

Title: Gamma-ray boxes from axion-mediated dark matter
Authors: Alejandro Ibarra, Hyun Min Lee, Sergio L\'opez Gehler, Wan-Il Park,
  Miguel Pato
Categories: hep-ph
Comments: 15 pages, 5 figures
\\
  We compute the gamma-ray output of axion-mediated dark matter and derive the
corresponding constraints set by recent data. In such scenarios the dark matter
candidate is a Dirac fermion that pair-annihilates into axions and/or scalars.
Provided that the axion decays (at least partly) into photons, these models
naturally give rise to a box-shaped gamma-ray spectrum that may present two
distinct phenomenological behaviours: a narrow box, resembling a line at half
the dark matter mass, or a wide box, spanning an extensive energy range up to
the dark matter mass. Remarkably, we find that in both cases a sizable
gamma-ray flux is predicted for a thermal relic without fine-tuning the model
parameters nor invoking boost factors. This large output is in line with recent
Fermi-LAT observations towards the galactic centre region and is on the verge
of being excluded. We then make use of the Fermi-LAT and H.E.S.S. data to
derive robust, model-independent upper limits on the dark matter annihilation
cross section for the narrow and wide box scenarios. H.E.S.S. constraints, in
particular, turn out to match the ones from Fermi-LAT at hundreds of GeV and
extend to multi-TeV masses. Future Cherenkov telescopes will likely probe
gamma-ray boxes from thermal dark matter relics in the whole multi-TeV range, a
region hardly accessible to direct detection, collider searches and other
indirect detection strategies.
\\ ( http://arxiv.org/abs/1303.6632 ,  2878kb)
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arXiv:1303.6636
Date: Tue, 26 Mar 2013 20:00:02 GMT   (549kb,D)

Title: Scale-invariant resonance tagging in multijet events and new physics in
  Higgs pair production
Authors: Maxime Gouzevitch, Alexandra Oliveira, Juan Rojo, Rogerio Rosenfeld,
  Gavin Salam, Veronica Sanz
Categories: hep-ph hep-ex
Comments: 38 pages, 17 figures
Report-no: CERN-PH-TH/2012-311, ICTP-SAIFR/2013-003
\\
  We study resonant pair production of heavy particles in fully hadronic final
states by means of jet substructure techniques. We propose a new resonance
tagging strategy that smoothly interpolates between the highly boosted and
fully resolved regimes, leading to uniform signal efficiencies and background
rejection rates across a broad range of masses. Our method makes it possible to
efficiently replace independent experimental searches, based on different final
state topologies, with a single common analysis. As a case study, we apply our
technique to pair production of Higgs bosons decaying into $b\bar{b}$ pairs in
generic New Physics scenarios. We adopt as benchmark models radion and massive
KK graviton production in warped extra dimensions. We find that despite the
overwhelming QCD background, the $4b$ final state has enough sensitivity to
provide a complementary handle in searches for enhanced Higgs pair production
at the LHC.
\\ ( http://arxiv.org/abs/1303.6636 ,  549kb)
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arXiv:1303.6637
Date: Tue, 26 Mar 2013 20:00:03 GMT   (457kb,D)

Title: Calculating Track-Based Observables for the LHC
Authors: Hsi-Ming Chang, Massimiliano Procura, Jesse Thaler, Wouter J.
  Waalewijn
Categories: hep-ph hep-ex nucl-th
Comments: 5 pages, 5 figures
Report-no: MIT--CTP 4449
\\
  By using observables that only depend on charged particles (tracks), one can
efficiently suppress pile-up contamination at the LHC. Such measurements are
not infrared safe in perturbation theory, so any calculation of track-based
observables must account for hadronization effects. We develop a formalism to
perform these calculations in QCD, by matching partonic cross sections onto new
non-perturbative objects called track functions which absorb infrared
divergences. The track function T_i(x) describes the energy fraction x of a
hard parton i which is converted into charged hadrons. We give a
field-theoretic definition of the track function and derive its renormalization
group evolution, which is in excellent agreement with the Pythia parton shower.
We then perform a next-to-leading order calculation of the total energy
fraction of charged particles in e+ e- -> hadrons. To demonstrate the
implications of our framework for the LHC, we match the Pythia parton shower
onto a set of track functions to describe the track mass distribution in Higgs
plus one jet events. We also show how to reduce smearing due to hadronization
fluctuations by measuring dimensionless track-based ratios.
\\ ( http://arxiv.org/abs/1303.6637 ,  457kb)
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arXiv:1303.6638
Date: Tue, 26 Mar 2013 20:00:06 GMT   (258kb)

Title: Probing dark matter couplings to top and bottom at the LHC
Authors: Tongyan Lin, Edward W. Kolb, Lian-Tao Wang
Categories: hep-ph hep-ex
\\
  Monojet searches are a powerful way to place model-independent constraints on
effective operators coupling dark matter to the standard model. For operators
generated by the exchange of a scalar mediator, however, couplings to light
quarks are suppressed and the prospect of probing such interactions through the
inclusive monojet channel at the LHC is limited. We propose dedicated searches,
focusing on bottom and top quark final states, to constrain this class of
operators. We show that a search in mono b-jets can significantly improve
current limits. The mono-b signal arises partly from direct production of
b-quarks in association with dark matter, but the dominant component is from
top quark pair production in the kinematic regime where one top is boosted. A
search for tops plus missing energy can strengthen the bounds even more; in
this case signal and background have very different missing energy
distributions. We find an overall improvement by several orders of magnitude in
the bound on the direct detection cross section for scalar or pseudoscalar
couplings.
\\ ( http://arxiv.org/abs/1303.6638 ,  258kb)
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arXiv:1303.6653
Date: Tue, 26 Mar 2013 20:30:03 GMT   (1197kb)

Title: Dark Two Higgs Doublet Model
Authors: Hye-Sung Lee, Marc Sher
Categories: hep-ph
Comments: 15 pages, 12 figures
\\
  We perform a detailed study of a specific Two Higgs Doublet Model (2HDM) with
a U(1) gauge symmetry, instead of a typical Z2 discrete symmetry, containing a
very light gauge boson Z' (GeV scale or below). The Standard Model (SM)
fermions do not carry U(1) charges, but induced couplings to the Z' (called the
dark Z) are generated through mixing with the SM neutral gauge bosons. Such a
light Z' could explain some astrophysical anomalies as well as the muon g-2
deviation, and has been the subject of great experimental interest. We consider
the scenario in which the 125 GeV SM-like Higgs (H) is the heavier scalar
state, and focus on the lighter neutral state (h) as well as charged Higgs. We
analyze the constraints on the model from various experiments and predict novel
channels to search for these Higgs scalars at the LHC. In particular,
experiments looking for lepton-jets are among potentially important searches.
\\ ( http://arxiv.org/abs/1303.6653 ,  1197kb)
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arXiv:1303.6698
Date: Tue, 26 Mar 2013 23:00:52 GMT   (493kb)

Title: Diagrammatic and Kinetic Equation Analysis of Ultrasoft Fermionic Sector
  in Quark-Gluon Plasma
Authors: Daisuke Satow
Categories: hep-ph
Comments: 77pages, 18 figures; revised version of Ph. D. thesis, which was
  accepted by Kyoto university in January 2013
\\
  At so high temperature (T) that the coupling constant (g) is small and the
masses of the particles are negligible, different scheme has to be applied in
each energy scale in the analysis of the quark-gluon plasma (QGP). In the soft
energy region (p gT), the simple perturbative expansion called the hard thermal
loop (HTL) approximation can be applied, and that approximation expects the
existence of the bosonic and fermionic collective excitations called plasmon
and plasmino. On the other hand, in the ultrasoft energy region (p g^2T), the
HTL approximation is inapplicable due to infrared singularity, so the question
whether there are any excitation modes in that energy region has not been
studied well. In this thesis, we analyze the quark spectrum whose energy is
ultrasoft in QGP, using the resummed perturbation theory which enables us to
successfully regularize the infrared singularity. Since the Yukawa model and
QED are simpler than QCD but have some similarity to QCD, we also work in these
models. As a result, we establish the existence of a novel fermionic mode in
the ultrasoft energy region, and obtain the expressions of the pole position
and the strength of that mode. We also show that the Ward-Takahashi identity is
satisfied in the resummed perturbation theory in QED/QCD. Furthermore, we
derive the linearized and generalized Boltzmann equation for the ultrasoft
fermion excitations in the Kadanoff-Baym formalism, and show that the resultant
equation is equivalent to the self-consistent equation in the resummed
perturbation theory. We also derive the equation which determines the n-point
functions with external lines for a pair of fermions and (n-2) bosons with
ultrasoft momenta, by considering the non-linear response regime using the
gauge symmetry. We also derive the Ward-Takahashi identity from the
conservation law of the electromagnetic current in the Kadanoff-Baym formalism.
\\ ( http://arxiv.org/abs/1303.6698 ,  493kb)
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arXiv:1303.6703
Date: Tue, 26 Mar 2013 23:24:34 GMT   (307kb)

Title: Vector-like leptons and extra gauge symmetry for the natural Higgs boson
Authors: Bumseok Kyae, Chang Sub Shin
Categories: hep-ph
Comments: 14 pages, 4 eps figures
\\
  For raising the radiative Higgs mass without a serious fine-tuning in the
Higgs sector, we introduce vector-like charged lepton doublets and neutral
singlets {L,L^c; N,N^c}, and consider their order one Yukawa coupling to the
Higgs, W \supset y_NLh_uN^c. The 125 GeV Higgs mass can be naturally explained
with the stop mass squared of ~(500 GeV)^2 and even without the "A-term"
contributions. It is possible because of the quartic power of y_N in the
radiative Higgs mass correction, and much less stringent mass bounds on extra
leptonic matter. In order to avoid blowup of y_N at higher energy scales, a
non-Abelian gauge extension of the MSSM is attempted, under which {L,L^c;
N,N^c} are charged, while all the ordinary MSSM superfields remain neutral. We
discuss the gauge coupling unification. This mechanism can be applied also for
enhancing h^0 \rightarrow \gamma\gamma with W \supset y_EL^ch_uE, if the
charged lepton singlets {E,E^c} are also introduced.
\\ ( http://arxiv.org/abs/1303.6703 ,  307kb)
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arXiv:1303.6798
Date: Wed, 27 Mar 2013 11:53:08 GMT   (448kb)

Title: Electromagnetic form factors of octet baryons in QCD
Authors: T. M. Aliev, K. Azizi, M. Savci
Categories: hep-ph
Comments: 20 Pages and 8 Figures
\\
  The electromagnetic form factors of octet baryons are estimated within light
cone QCD sum rules method, using the most general form of the interpolating
current for baryons. A comparison of our predictions on the magnetic dipole and
electric form factors with the results of other approaches is performed.
\\ ( http://arxiv.org/abs/1303.6798 ,  448kb)
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arXiv:1303.6842
Date: Wed, 27 Mar 2013 14:39:13 GMT   (141kb)

Title: Predictions of charged charmonium-like structures with hidden-charm and
  open-strange channel
Authors: Dian-Yong Chen, Xiang Liu and Takayuki Matsuki
Categories: hep-ph hep-ex nucl-th
Comments: 5 pages, 3 figures
\\
  We propose the initial single chiral particle emission (ISChE) mechanism,
with which the hidden-charm di-kaon decays of higher charmonia and
charmonium-like states are studied. Calculating the distributions of
differential decay width, we obtain the line shape of the $J/\psi K^+$
invariant mass spectrum of $\psi_i\to J/\psi K^+K^-$, where $\psi_i=\psi(4415),
Y(4660)$, and $\psi(4790)$. Our numerical results show that there exist
enhancement structures with both hidden-charm and open-strange, which are near
the $D_s\bar{D}^*/\bar{D}_s^*D$ and $D^*\bar{D}_s^*/\bar{D}^*D_s^*$ thresholds.
These charged charmonium-like structures predicted in this paper can be
accessible at future experiment, especially BESIII, BelleII and SuperB.
\\ ( http://arxiv.org/abs/1303.6842 ,  141kb)
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arXiv:1303.6857
Date: Wed, 27 Mar 2013 15:19:03 GMT   (12kb)

Title: A J^PG=1++ Charged Resonance in the Y(4260) to pi+pi- J/psi Decay?
Authors: R. Faccini, L. Maiani, F. Piccinini, A. Pilloni, A.D. Polosa, V.
  Riquer
Categories: hep-ph
Comments: 8 pages, 2 figures
\\
  New BES data show a peak in the Y(4260) decay into J/psi plus one charged
pion. We point out that the peak might correspond to a charged resonance at
about 3880 MeV predicted time ago within a tetraquark model. The same
tetraquark model predicts another peak at about 100 MeV below the observed one.
We discuss the possibility of having it in present data. On the other hand we
expect that if the molecular picture were the correct one, a peak corresponding
to a D*D*bar state should appear at about 4020 MeV.
\\ ( http://arxiv.org/abs/1303.6857 ,  12kb)
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arXiv:1303.6897
Date: Wed, 27 Mar 2013 16:56:41 GMT   (223kb)

Title: Analysis of $\gamma^\ast \Lambda \to \Sigma^0$ transition in QCD
Authors: T. M. Aliev, K. Azizi, M. Savci
Categories: hep-ph
Comments: 13 Pages and 4 Figures
\\
  The $\gamma^\ast \Lambda \to \Sigma^0$ transition form factors are
investigated within the light--cone QCD sum rules method. Using the most
general form of the interpolating current of $\Sigma^0$ baryon and the
distribution amplitudes of $\Lambda$ baryon we calculate the $Q^2$ dependence
of the electromagnetic form factors. Our result are compared with the
predictions of the covariant spectator quark model.
\\ ( http://arxiv.org/abs/1303.6897 ,  223kb)
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arXiv:1303.6912
Date: Wed, 27 Mar 2013 17:49:15 GMT   (2970kb)

Title: News on Right Handed Neutrinos
Authors: Marco Drewes
Categories: hep-ph astro-ph.CO hep-ex
Comments: 44 pages, 14 figures
Report-no: TUM-HEP-881/13
\\
  Neutrinos are the only particles in the Standard Model of particle physics
that have only been observed with left handed chirality to date. If right
handed neutrinos exist, they could be responsible for several phenomena that
have no explanation within the Standard Model, including neutrino oscillations,
the baryon asymmetry of the universe, dark matter and dark radiation. After a
pedagogical introduction, we review recent progress in the phenomenology of
right handed neutrinos. We in particular discuss the mass ranges suggested by
hints for neutrino oscillation anomalies and dark radiation (eV), sterile
neutrino dark matter scenarios (keV) and experimentally testable theories of
baryogenesis (GeV to TeV). We summarize constraints from theoretical
considerations, laboratory experiments, astrophysics and cosmology for each of
these.
\\ ( http://arxiv.org/abs/1303.6912 ,  2970kb)
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arXiv:1303.6918
Date: Wed, 27 Mar 2013 18:12:41 GMT   (1186kb,D)

Title: Post-Sphaleron Baryogenesis and an Upper Limit on the
  Neutron-Antineutron Oscillation Time
Authors: K.S. Babu, P.S. Bhupal Dev, Elaine C.F.S. Fortes and R.N. Mohapatra
Categories: hep-ph hep-ex
Comments: 20 pages, 2 tables, 8 figures
Report-no: OSU-HEP-13-02, MAN/HEP/2012/017, UMD-PP-013-003
\\
  A new scenario for baryogenesis has been proposed wherein the baryon
asymmetry of the universe is produced below the electroweak phase transition
temperature after the sphaleron processes have gone out of equilibrium. This
mechanism, termed post-sphaleron baryogenesis (PSB), arises naturally in
quark-lepton unified models based on the gauge symmetry SU(2)_L x SU(2)_R x
SU(4)_c realized in the multi-TeV scale. These models embed naturally the
seesaw mechanism for neutrino masses, and predict color-sextet scalar particles
in the TeV range which may be accessible to the LHC experiments. A necessary
consequence of this scenario is the baryon number violating \Delta B=2 process
of neutron-antineutron (n-\bar{n}) oscillations. In this paper we show that the
constraints of PSB, when combined with the neutrino oscillation data and
restrictions from flavor changing neutral currents mediated by the colored
scalars imply an upper limit on the n-\bar{n} oscillation time of 5 x 10^{10}
sec. regardless of the quark-lepton unification scale. If this scale is
relatively low, in the (200-250) TeV range, \tau_{n-\bar{n}} is predicted to be
less than 10^{10} sec., which is accessible to the next generation of proposed
experiments.
\\ ( http://arxiv.org/abs/1303.6918 ,  1186kb)
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arXiv:1303.6928
Date: Wed, 27 Mar 2013 19:07:37 GMT   (688kb,D)

Title: Updated S3 Model of Quarks
Authors: Ernest Ma, Blazenka Melic
Categories: hep-ph hep-ex
Comments: 14 pages, 2 figures
Report-no: UCRHEP-T526
\\
  A model proposed in 2004 using the non-Abelian discrete symmetry S3 for
understanding the flavor structure of quarks and leptons is updated, with
special focus on the quark and scalar sectors. We show how the approximate
residual symmetries of this model explain both the pattern of the quark mixing
matrix and why the recently observed particle of 126 GeV at the Large Hadron
Collider is so much like the one Higgs boson of the Standard Model. We identify
the strongest phenomenological bounds on the scalar masses of this model, and
predict a possibly observable decay b -> s tau- mu+, but not b -> s tau+ mu-.
\\ ( http://arxiv.org/abs/1303.6928 ,  688kb)
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arXiv:1303.6929
Date: Wed, 27 Mar 2013 19:08:22 GMT   (2882kb)

Title: Dynamical holographic QCD model for glueball and light meson spectra
Authors: Danning Li and Mei Huang
Categories: hep-ph hep-th
Comments: 43 pages, 20 figures
\\
  In this work, we offer a systematic framework to describe the gluodynamics
and chiral dynamics.We firstly construct a quenched dynamical holographic QCD
(hQCD) model in the graviton-dilaton framework for the pure gluon system, then
develop a dynamical hQCD model for the two flavor system in the
graviton-dilaton-scalar framework by adding light flavors on the gluodynamical
background. The dimension-2 dilaton background field $\Phi$ takes the same form
as that in the soft-wall model and its square $\Phi^2$ can be identified as the
dual field to the gauge invariant operator of the dimension-4 gluon condensate.
The gluon condensate in the QCD vacuum breaks conformality and induces a
deformed warp factor. Without introducing extra parameters but just
self-consistently solving the deformed metric induced by the dilaton background
field, we find that the scalar glueball spectra in the quenched dynamical model
is in very well agreement with lattice data.For two flavor system in the
graviton-dilaton-scalar framework, the deformed metric is self-consistently
solved by considering both the chiral condensate and gluon condensate in the
vacuum, which are responsible for the chiral symmetry breaking and linear
confinement, respectively. It is found that the mixing between the chiral
condensate and gluon condensate is important to produce the correct light
flavor meson spectra. The pion form factor and the vector couplings are also
investigated in the dynamical hQCD model. Besides, we give the criteria for the
existence of linear quark potential from the metric structure, and show a
negative quadratic dilaton background field is not favored in the
graviton-dilaton framework.
\\ ( http://arxiv.org/abs/1303.6929 ,  2882kb)
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arXiv:1303.6931
Date: Wed, 27 Mar 2013 19:17:33 GMT   (13kb)

Title: Degenerate states in the scalar boson spectrum. Is the Higgs Boson a
  Twin ?
Authors: Berthold Stech
Categories: hep-ph hep-th
Comments: 6 pages
\\
  The extension of the standard model to $SU(3)_L\times SU(3)_R \times SU(3)_C$
is considered. Spontaneous symmetry breaking requires two $(3^*, 3, 1)$ Higgs
field multiplets with a strong hierarchical structure of their vacuum
expectation values. An invariant potential is constructed to provide for these
vacuum expectation values. This potential gives masses to all scalar fields
apart from the 15 Goldstone bosons. In case there exists a one-to-one
correspondence between the vacuum expectation values of the two field
multiplets, the scalar boson spectrum contains degenerate eigenstates. The
lowest eigenstate has a mass near 123 GeV close to the Higgs-like particle
discovered at the LHC. In one class of solutions this lowest state is a nearly
degenerate twin state. Each member is a superposition of fields from both
multiplets with about equal strength. The twins are non identical twins, namely
different combinations of a conventional Higgs and a Higgs field which is not
coupled to fermions, only to gauge bosons. A second class of solutions leads
again to degenerate states but in this case the state near 123 GeV remains a
single state even for identical low scale vacuum expectation values in both
multiplets.
\\ ( http://arxiv.org/abs/1303.6931 ,  13kb)
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arXiv:1303.4415 (*cross-listing*)
Date: Mon, 18 Mar 2013 20:36:11 GMT   (38kb,D)

Title: To Tilt or Not To Tilt: Discrete Gauge Symmetries in Global Intersecting
  D-Brane Models
Authors: Gabriele Honecker, Wieland Staessens
Categories: hep-th hep-ph
Comments: 1+47 pages
Report-no: MITP/13-019
\\
  Discrete gauge symmetries in global intersecting D-brane models constrain the
exact form of the perturbative as well as non-perturbative superpotential. We
derive the complete set of conditions on the existence of discrete Zn gauge
symmetries on toroidal orbifolds, T6/Z(N) and T6/Z(2)xZ(2M}, with fractional or
rigid D6-branes on tilted tori, for which global models of particle physics are
known. Several examples of global left-right symmetric and Pati-Salam models
are presented. Some discrete `stringy' Zn symmetries are trivial from the field
theory point of view, while others have not been identified before.
\\ ( http://arxiv.org/abs/1303.4415 ,  38kb)
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arXiv:1303.6677 (*cross-listing*)
Date: Tue, 26 Mar 2013 21:54:49 GMT   (1146kb,D)

Title: GiBUU and Shallow Inelastic Scattering
Authors: O. Lalakulich and U. Mosel
Categories: nucl-th hep-ex hep-ph nucl-ex
Comments: Proceedings of NuInt12 conference, 11 pages, 14 figures
\\
  In this talk we shortly describe the physics contents of the GiBUU transport
code, used to describe lepton scattering off nuclei. Particular attention will
be given to validation of the GiBUU in pion-, electron- and photon-induced
reactions, which serve as a benchmark for neutrino-induced ones. We mainly
concentrate on those properties of benchmark reactions, which are relevant to
the region of Shallow Inelastic Scattering (SIS). Our results in this region
are presented for integrated and differential cross sections. Comparison with
recent MINOS inclusive data, as well as predictions for the differential cross
sections measurable in \Minerva and \Nova experiments are made.
\\ ( http://arxiv.org/abs/1303.6677 ,  1146kb)
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arXiv:1303.6685 (*cross-listing*)
Date: Tue, 26 Mar 2013 22:28:26 GMT   (1954kb)

Title: Brane SUSY Breaking and Inflation: Implications for Scalar Fields and
  CMB Distorsion
Authors: A. Sagnotti (Scuola Normale Superiore and INFN, Pisa, ITALY)
Categories: hep-th gr-qc hep-ex hep-ph
Comments: 9 pages, 4 figures, talk presented at Rencontres de Moriond EW2013,
  La Thuile, March 2 - 9 2013
\\
  I elaborate on a link between the string--scale breaking of supersymmetry
that occurs in a class of superstring models and the onset of inflation. The
link rests on spatially flat cosmologies supported by a scalar field driven by
an exponential potential. If, as in String Theory, this potential is steep
enough, under some assumptions that are spelled out in the text the scalar can
only climb up as it emerges from an initial singularity. In the presence of
another mild exponential, slow--roll inflation is thus injected during the
ensuing descent and definite imprints are left in the CMB power spectrum: the
quadrupole is systematically reduced and, depending on the choice of two
parameters, an oscillatory behavior can also emerge for low multipoles l < 50,
in qualitative agreement with WMAP9 and PLANCK data.
\\ ( http://arxiv.org/abs/1303.6685 ,  1954kb)
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arXiv:1303.6733 (*cross-listing*)
Date: Wed, 27 Mar 2013 03:22:14 GMT   (313kb)

Title: Unambiguous Determination of the Neutrino Mass Hierarchy Using Reactor
  Neutrinos
Authors: Yu-Feng Li, Jun Cao, Yifang Wang, Liang Zhan
Categories: hep-ex hep-ph
Comments: 14 pages, 7 figures
\\
  Determination of the neutrino mass hierarchy in a reactor neutrino experiment
at medium baseline is discussed. Observation of the interference effects
between the \Delta m^2_{31} and \Delta m^2_{32} oscillations enables a relative
measurement independent of the knowledge of the absolute mass-squared
difference. With a 20 kton liquid scintillator detector of 3%/\sqrt{E(MeV)}
energy resolution, the Daya Bay II Experiment at a baseline of \sim 50 km from
reactors of total thermal power 36 GW can determine the mass hierarchy at a
confidence level of \Delta \chi^2_{MH} \sim (10-12) (3-3.5 \sigma) in 6 years
after taking into account the real spatial distribution of reactor cores. We
show that the unknown residual energy non-linearity of the liquid scintillator
detector has limited impact on the sensitivity due to the self-calibration of
small oscillation peaks. Furthermore, an extra increase of \Delta \chi^2_{MH}
\simeq 4(9) can be obtained, by including the precise measurement of the
effective mass-squared difference \Delta m^2_{\mu\mu} of expected relative
error 1.5% (1%) from ongoing long-baseline muon neutrino disappearance
experiments. The sensitivities from the interference and from absolute
measurements can be cross checked. When combining these two, the mass hierarchy
can be determined at a confidence level of \Delta \chi^2_{MH} \sim (15-20) (4
\sigma) in 6 years.
\\ ( http://arxiv.org/abs/1303.6733 ,  313kb)
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arXiv:1303.6735 (*cross-listing*)
Date: Wed, 27 Mar 2013 03:33:48 GMT   (44kb)

Title: Coupling strength of the $N^*(1535)S_{11}$ to the $K^+\Lambda$ channel
Authors: T. Mart
Categories: nucl-th hep-ph nucl-ex
Comments: 11 pages, 5 figures, 1 table
\\
  The $N^*(1535)S_{11}$ coupling strength to the $K^+\Lambda$ channel,
$g_{N^*(1535)\Lambda K^+}$, is extracted from the latest and largest
$K^+\Lambda$ photoproduction database by using an isobar model. It is found
that the coupling is small. In term of the coupling ratio the best result is
$R\equiv |g_{N^*(1535)\Lambda K^+}/g_{N^*(1535)\eta p}|=0.460\pm 0.172$, much
smaller than that obtained from the isobar analysis of the $J/\psi$ decays,
i.e., $1.3\pm 0.3$, but consistent with the results of the unitary chiral
approach of the same decay processes as well as the partial wave analysis of
kaon photoproduction, i.e., $R=0.5\sim 0.7$. The different results of $R$ found
here and in literature to date suggest that a more solid definition of the
coupling constant, especially in the case of $N^*(1535)S_{11}$ state, is
urgently required, before a fair comparison can be made.
\\ ( http://arxiv.org/abs/1303.6735 ,  44kb)
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arXiv:1303.6818 (*cross-listing*)
Date: Wed, 27 Mar 2013 13:02:14 GMT   (903kb)

Title: Nucleon Structure using lattice QCD
Authors: C. Alexandrou (Univ. of Cyprus and Cyprus Inst.), M. Constantinou
  (Univ. of Cyprus), V.Drach (DESY-Zeuthen), K. Hatziyiannakou (Univ. of
  Cyprus), K. Jansen (DESY-Zeuthen & Univ. of Cyprus), C. Kallidonis (Univ. of
  Cyprus & Cyprus Insti.), G.Koutsou (Cyprus Inst.), T. Leontiou (Frederick
  Univ.) and A. Vaquero (Cyprus Inst.)
Categories: hep-lat hep-ph nucl-ex nucl-th
Comments: Invited talk at the 3rd Workshop on the QCD Structure of the Nucleon
  (QCD-N'12), 22-26 October 2012, Bilbao, Spain. 8 pages & 14 figures
Report-no: DESY 13-047, SFB/CPP-13-22
\\
  A review of recent nucleon structure calculations within lattice QCD is
presented. The nucleon excited states, the axial charge, the isovector momentum
fraction and helicity distribution are discussed, assessing the methods applied
for their study, including approaches to evaluate the disconnected
contributions. Results on the spin carried by the quarks in the nucleon are
also presented.
\\ ( http://arxiv.org/abs/1303.6818 ,  903kb)
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arXiv:1303.6845 (*cross-listing*)
Date: Wed, 27 Mar 2013 14:45:10 GMT   (128kb,D)

Title: D6-Brane Model Building and Discrete Symmetries on T6/Z(2)xZ(6')xOR with
  Discrete Torsion
Authors: Gabriele Honecker, Wieland Staessens
Categories: hep-th hep-ph
Comments: 15 pages; Proceedings of the Corfu Summer Institute 2012
Report-no: MITP/13-021
\\
  We review several geometric aspects and properties of the orbifold
T6/Z(2)xZ(6')xOR with discrete torsion, that are crucial with respect to global
model building and the search for discrete gauge symmetries in the context of
intersecting D6-brane models. A global six-stack Pati-Salam model is used for
illustration, and various characteristics of its effective field theory are
discussed.
\\ ( http://arxiv.org/abs/1303.6845 ,  128kb)
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arXiv:1303.6868 (*cross-listing*)
Date: Wed, 27 Mar 2013 16:02:33 GMT   (92kb)

Title: Model independent determination of the dark matter mass from direct
  detection experiments
Authors: Bradley J. Kavanagh, Anne M. Green
Categories: astro-ph.CO hep-ph
Comments: 5 pages, 3 figures
\\
  Determining the dark matter (DM) mass is of paramount importance for
understanding dark matter. We present a novel parametrization of the DM speed
distribution which will allow the DM mass to be accurately measured using data
from Weakly Interacting Massive Particle (WIMP) direct detection experiments.
Specifically, we parametrize the natural logarithm of the speed distribution as
a polynomial in the speed v. We demonstrate, using mock data from upcoming
experiments, that by fitting the WIMP mass and interaction cross-section, along
with the polynomial coefficients, we can accurately reconstruct both the WIMP
mass and speed distribution. This new parameterization represents a significant
improvement over previous methods as it provides an accurate, unbiased
reconstruction of the WIMP mass even for non-trivial underlying speed
distributions, demonstrating that the WIMP properties can be reconstructed from
direct detection experiments without prior knowledge of the distribution
function.
\\ ( http://arxiv.org/abs/1303.6868 ,  92kb)
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arXiv:1303.6909 (*cross-listing*)
Date: Wed, 27 Mar 2013 17:44:32 GMT   (114kb)

Title: Leading singularities and off-shell conformal integrals
Authors: James Drummond, Claude Duhr, Burkhard Eden, Paul Heslop, Jeffrey
  Pennington, Vladimir A. Smirnov
Categories: hep-th hep-ph
Comments: 60 pages, LaTeX, 2 figures
Report-no: HU-Mathematik:2013-06, HU-EP-13/15, IPPP/13/09, DCPT/13/18,
  SLAC-PUB-15409, LAPTH-016/13, CERN-PH-TH/2013-058
\\
  The three-loop four-point function of stress-tensor multiplets in N=4 super
Yang-Mills theory contains two so far unknown, off-shell, conformal integrals,
in addition to the known, ladder-type integrals. In this paper we evaluate the
unknown integrals, thus obtaining the three-loop correlation function
analytically. The integrals have the generic structure of rational functions
multiplied by (multiple) polylogarithms. We use the idea of leading
singularities to obtain the rational coefficients, the symbol - with an
appropriate ansatz for its structure - as a means of characterising multiple
polylogarithms, and the technique of asymptotic expansion of Feynman integrals
to obtain the integrals in certain limits. The limiting behaviour uniquely
fixes the symbols of the integrals, which we then lift to find the
corresponding polylogarithmic functions. The final formulae are numerically
confirmed. The techniques we develop can be applied more generally, and we
illustrate this by analytically evaluating one of the integrals contributing to
the same four-point function at four loops. This example shows a connection
between the leading singularities and the entries of the symbol.
\\ ( http://arxiv.org/abs/1303.6909 ,  114kb)
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arXiv:1112.5675
replaced with revised version Wed, 27 Mar 2013 17:28:42 GMT   (16kb)

Title: Top++: a program for the calculation of the top-pair cross-section at
  hadron colliders
Authors: Michal Czakon and Alexander Mitov
Categories: hep-ph hep-ex
Comments: v2.0: Major update: includes full NNLO result; functionality updates.
  Program webpage: http://www.alexandermitov.com/software
\\ ( http://arxiv.org/abs/1112.5675 ,  16kb)
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\\
arXiv:1203.0329
replaced with revised version Wed, 27 Mar 2013 02:01:37 GMT   (143kb)

Title: High transverse momentum quarkonium production and dissociation in heavy
  ion collisions
Authors: Rishi Sharma, Ivan Vitev
Categories: hep-ph nucl-ex nucl-th
Comments: 29 pages, 32 eps figures, matrix element fitting details and
  color-octet component quenching added, version to be published in Physical
  Review C
\\ ( http://arxiv.org/abs/1203.0329 ,  143kb)
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arXiv:1206.4142 (*cross-listing*)
replaced with revised version Wed, 27 Mar 2013 09:21:51 GMT   (120kb)

Title: Search for solar axions produced by Compton process and bremsstrahlung
  using axioelectric effect
Authors: A. V. Derbin, I. S. Drachnev, A. S. Kayunov, V. N. Muratova
Categories: hep-ex hep-ph
Comments: 6 pages, 6 figures, corrected typo in fig.1
Journal-ref: JETP Lett., 95, 379 (2012)
\\ ( http://arxiv.org/abs/1206.4142 ,  120kb)
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arXiv:1206.5839 (*cross-listing*)
replaced with revised version Tue, 26 Mar 2013 23:15:50 GMT   (492kb)

Title: Radiation from a D-dimensional collision of shock waves: higher order
  set up and perturbation theory validity
Authors: Fl\'avio S. Coelho, Carlos Herdeiro, Carmen Rebelo and Marco Sampaio
Categories: hep-th gr-qc hep-ph
Comments: 21 pages, 3 figures; v2: matches version to Appear in Phys. Rev. D
\\ ( http://arxiv.org/abs/1206.5839 ,  492kb)
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arXiv:1208.5136
replaced with revised version Wed, 27 Mar 2013 05:45:25 GMT   (1184kb)

Title: Search for Majorana Neutrino Signal in $B_c$ Meson Rare Decay
Authors: Shou-Shan Bao, Hong-Lei Li, Zong-Guo Si, Yi-Bo Yang
Categories: hep-ph
Comments: 14 pages, 6 figures
Journal-ref: Commun. Theor. Phys. 59(2013) 472
\\ ( http://arxiv.org/abs/1208.5136 ,  1184kb)
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arXiv:1209.5902 (*cross-listing*)
replaced with revised version Wed, 27 Mar 2013 08:53:42 GMT   (326kb,D)

Title: A String Theory Explanation for Quantum Chaos in the Hadronic Spectrum
Authors: Leopoldo A. Pando Zayas and Dori Reichmann
Categories: hep-th hep-ph nucl-th
Comments: 11 pages, 9 figures. v2: References added, expanded comments on the
  role of minisuperspace
\\ ( http://arxiv.org/abs/1209.5902 ,  326kb)
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\\
arXiv:1209.5915 (*cross-listing*)
replaced with revised version Wed, 27 Mar 2013 17:08:09 GMT   (2830kb,D)

Title: Towards a holographic realization of the quarkyonic phase
Authors: Jan de Boer, Borun D. Chowdhury, Michal P. Heller, Jakub Jankowski
Categories: hep-th hep-ph nucl-th
Comments: 31 pages, 16 figures; v2: inset plot in Fig. 10 removed, coloring in
  Fig. 13 fixed, typos fixed, matches published version
Journal-ref: Phys. Rev. D 87, 066009 (2013)
DOI: 10.1103/PhysRevD.87.066009
\\ ( http://arxiv.org/abs/1209.5915 ,  2830kb)
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arXiv:1211.1980
replaced with revised version Tue, 26 Mar 2013 21:15:10 GMT   (1825kb)

Title: Higgs CP Properties From Early LHC Data
Authors: Ayres Freitas, Pedro Schwaller
Categories: hep-ph hep-ex
Comments: 18 pages, 5 figures; v2: references added and minor typos fixed
Report-no: ANL-HEP-PR-12-84
Journal-ref: Phys. Rev. D 87, 055014 (2013)
DOI: 10.1103/PhysRevD.87.055014
\\ ( http://arxiv.org/abs/1211.1980 ,  1825kb)
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arXiv:1211.1981
replaced with revised version Tue, 26 Mar 2013 21:08:58 GMT   (3040kb,D)

Title: More Energy, More Searches, but the pMSSM Lives On
Authors: Matthew W. Cahill-Rowley, JoAnne L. Hewett, Ahmed Ismail, and Thomas
  G. Rizzo
Categories: hep-ph hep-ex
Comments: 33 pages, 9 figures
Report-no: SLAC-PUB-15273
\\ ( http://arxiv.org/abs/1211.1981 ,  3040kb)
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arXiv:1211.4828
replaced with revised version Wed, 27 Mar 2013 14:06:00 GMT   (1784kb)

Title: The Higgs Boson in the Standard Model - From LEP to LHC: Expectations,
  Searches, and Discovery of a Candidate
Authors: S. Dittmaier and M. Schumacher
Categories: hep-ph
Comments: 82 pages, 34 figures, minor modifications, version equivalent to the
  one published in Prog. Part. Nucl. Phys
Report-no: FR-PHENO-2012-035
\\ ( http://arxiv.org/abs/1211.4828 ,  1784kb)
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arXiv:1212.0648
replaced with revised version Wed, 27 Mar 2013 16:20:08 GMT   (132kb,D)

Title: X(3872) is not a true molecule
Authors: Susana Coito, George Rupp, Eef van Beveren
Categories: hep-ph hep-ex nucl-th
Comments: Revtex4, 10 pages, 4 figures, 8 plots, 7 tables; v2: SVJour Document
  Class, a few extra references, several typos and other minor imprecisions
  corrected, version accepted for publication in Eur. Phys. J. C
\\ ( http://arxiv.org/abs/1212.0648 ,  132kb)
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arXiv:1212.4858
replaced with revised version Wed, 27 Mar 2013 19:44:58 GMT   (800kb)

Title: Discovering Minimal Universal Extra Dimensions (MUED) at the LHC
Authors: Alexander Belyaev, Matthew Brown, Jes\'us Moreno, Chlo\'e Papineau
Categories: hep-ph hep-th
Comments: 46 pages, 20 figures
\\ ( http://arxiv.org/abs/1212.4858 ,  800kb)
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arXiv:1212.5989
replaced with revised version Wed, 27 Mar 2013 11:16:54 GMT   (715kb)

Title: Mass Splitting between Charged and Neutral Winos at Two-Loop Level
Authors: Masahiro Ibe, Shigeki Matsumoto, Ryosuke Sato
Categories: hep-ph
Comments: 24 pages, 6 figures; version accepted for publication of PLB
Report-no: ICRR-Report-641-2012-30; IPMU-12-0231; UT-12-44
\\ ( http://arxiv.org/abs/1212.5989 ,  715kb)
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arXiv:1212.6541
replaced with revised version Wed, 27 Mar 2013 19:53:19 GMT   (28kb)

Title: Nuclear modification of vector boson production in proton-lead
  collisions at the LHC
Authors: Zhong-Bo Kang, Jian-Wei Qiu
Categories: hep-ph hep-ex nucl-ex nucl-th
Comments: 9 pages, 5 figures, minor modification, version to appear in PLB
DOI: 10.1016/j.physletb.2013.03.030
\\ ( http://arxiv.org/abs/1212.6541 ,  28kb)
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arXiv:1301.1554
replaced with revised version Wed, 27 Mar 2013 16:30:38 GMT   (159kb)

Title: Top-quark and neutrino composite Higgs bosons
Authors: Adam Smetana
Categories: hep-ph
Comments: 12 pages, 4 figures. This second version was extended by more
  detailed analysis of the Higgs boson phenomenology. Also an error in a
  numerical calculations in the first version was fixed. It influenced the
  results of the analysis quantitatively while keeping the qualitative
  conclusions unchanged
\\ ( http://arxiv.org/abs/1301.1554 ,  159kb)
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arXiv:1301.7536
replaced with revised version Wed, 27 Mar 2013 13:58:41 GMT   (34kb)

Title: Axino dark matter with R-parity violation and 130 GeV gamma-ray line
Authors: Motoi Endo, Koichi Hamaguchi, Seng Pei Liew, Kyohei Mukaida, Kazunori
  Nakayama
Categories: hep-ph astro-ph.CO
Comments: 16 pages, 2 figures, matches published version
Report-no: UT-13-03, IPMU 13-0024
Journal-ref: Physics Letters B 721 (2013), pp. 111-117
DOI: 10.1016/j.physletb.2013.03.008
\\ ( http://arxiv.org/abs/1301.7536 ,  34kb)
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arXiv:1303.0989
replaced with revised version Wed, 27 Mar 2013 09:01:20 GMT   (46kb,D)

Title: Physics of the Interplay Between the Top Quark and the Higgs Boson
Authors: Mikael Chala and Jose Santiago
Categories: hep-ph
Comments: 5 pages, 6 figures, Proceedings of TOP 2012, added references
\\ ( http://arxiv.org/abs/1303.0989 ,  46kb)
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arXiv:1303.1140
replaced with revised version Wed, 27 Mar 2013 19:54:53 GMT   (991kb)

Title: Color Breaking in the Early Universe
Authors: Hiren H. Patel, Michael J. Ramsey-Musolf, Mark B. Wise
Categories: hep-ph
Comments: 7 pages, 4 figures
\\ ( http://arxiv.org/abs/1303.1140 ,  991kb)
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