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received   by eprepget from  Wed 26 Oct 16 20:00:00 GMT  to  Thu 27 Oct 16 20:00:00 GMT
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arXiv:1610.08509
Date: Wed, 26 Oct 2016 20:00:02 GMT   (186kb,D)

Title: Testing Hadronic Interactions at Ultrahigh Energies with Air Showers
  Measured by the Pierre Auger Observatory
Authors: The Pierre Auger Collaboration: A. Aab, P. Abreu, M. Aglietta, E.J.
  Ahn, I. Al Samarai, I.F.M. Albuquerque, I. Allekotte, J. Allen, P. Allison,
  A. Almela, J. Alvarez Castillo, J. Alvarez-Mu\~niz, M. Ambrosio, G.A.
  Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, F. Arqueros, N.
  Arsene, H. Asorey, P. Assis, J. Aublin, G. Avila, A.M. Badescu, C. Baus, J.J.
  Beatty, K.H. Becker, J.A. Bellido, C. Berat, M.E. Bertaina, X. Bertou, P.L.
  Biermann, P. Billoir, J. Biteau, S.G. Blaess, A. Blanco, J. Blazek, C. Bleve,
  H. Bl\"umer, M. Boh\'a\v{c}ov\'a, D. Boncioli, C. Bonifazi, N. Borodai, A.M.
  Botti, J. Brack, I. Brancus, T. Bretz, A. Bridgeman, F.L. Briechle, P.
  Buchholz, A. Bueno, S. Buitink, M. Buscemi, K.S. Caballero-Mora, B.
  Caccianiga, L. Caccianiga, A. Cancio, F. Canfora, L. Caramete, et al. (377
  additional authors not shown)
Categories: hep-ex astro-ph.HE hep-ph
Comments: Phys. Rev. Lett. to appear Oct. 31, 2016 in volume 117, page 192001
\\
  Ultrahigh energy cosmic ray air showers probe particle physics at energies
beyond the reach of accelerators. Here we introduce a new method to test
hadronic interaction models without relying on the absolute energy calibration,
and apply it to events with primary energy 6-16 EeV (E_CM = 110-170 TeV), whose
longitudinal development and lateral distribution were simultaneously measured
by the Pierre Auger Observatory. The average hadronic shower is 1.33 +- 0.16
(1.61 +- 0.21) times larger than predicted using the leading LHC-tuned models
EPOS-LHC (QGSJetII-04), with a corresponding excess of muons.
\\ ( https://arxiv.org/abs/1610.08509 ,  186kb)
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arXiv:1610.08536
Date: Wed, 26 Oct 2016 20:31:34 GMT   (50kb)

Title: Heavy quark production at an Electron-Ion Collider
Authors: E. Chudakov, D. Higinbotham, Ch. Hyde, S. Furletov, Yu. Furletova, D.
  Nguyen, M. Stratmann, M. Strikman, C. Weiss
Categories: hep-ex hep-ph
Comments: 6 pages, 4 figures. Proceedings of XIIth International Conference on
  Beauty, Charm, and Hyperons in Hadronic Interactions (BEACH 2016), 12-18 June
  2016, George Mason University, Fairfax, Virginia, USA
Report-no: JLAB-THY-16-2354
\\
  An Electron-Ion Collider (EIC) with center-of-mass energies sqrt(s_{eN}) ~
20-100 GeV and luminosity L ~ 10^{34} cm^{-2} s^{-1} would offer new
opportunities to study heavy quark production in high-energy electron or photon
scattering on protons and nuclei. We report about an R&D project exploring the
feasibility of direct measurements of nuclear gluon densities at large x
(gluonic EMC effect, antishadowing) using open charm production at EIC. We
describe the charm production rates and angle-momentum distributions at large x
and discuss methods of charm reconstruction using next-generation detector
capabilities (pi/K identification, vertex reconstruction). The results can be
used also for other physics applications of heavy quark production at EIC
(fragmentation functions, jets, heavy quark propagation in nuclei).
\\ ( https://arxiv.org/abs/1610.08536 ,  50kb)
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arXiv:1610.08655
Date: Thu, 27 Oct 2016 08:22:34 GMT   (196kb)

Title: Pacific Neutrinos: Towards a High Precision Measurement of CP Violation
  ?
Authors: Claude Vallee
Categories: hep-ex physics.ins-det
Comments: 6 pages, 1 figure, 1 table. Proceedings of NUFACT 2016, Quy Nhon,
  Vietnam, August 21-27 2016
\\
  The application of deep sea low energy neutrino detection techniques to long
baseline neutrino physics is investigated, with a focus on a possible
configuration based on a FNAL neutrino beam impinging a detector hosted by the
NEPTUNE/OOI submarine observatories offshore of British Columbia.
\\ ( https://arxiv.org/abs/1610.08655 ,  196kb)
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arXiv:1610.08709
Date: Thu, 27 Oct 2016 11:07:28 GMT   (166kb,D)

Title: Tracking in dense environments and its inefficiency measurement using
  pixel $dE/dx$
Authors: Jason D. Mansour
Categories: hep-ex
Comments: Presented at PIXEL 2016 and prepared for submission to JINST
Report-no: ATL-INDET-PROC-2016-006
\\
  We present a measurement of the charged particle reconstruction inefficiency
inside of jet cores, using data collected by the ATLAS experiment in 2015 of
$pp$ collisions produced at the LHC, at a center-of-mass energy of 13 TeV. The
determination of this inefficiency is important for jet energy scale and mass
calibration, as well as multiple other performance studies and analyses. A data
driven method is used, where the fraction of lost particle tracks is determined
from energy deposition $dE/dx$ in the pixel detector. The fraction of lost
tracks is found to be less than 5%, which is an improvement since the previous
study, and agrees well within systematic uncertainties with a Monte Carlo
simulation.
\\ ( https://arxiv.org/abs/1610.08709 ,  166kb)
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arXiv:1610.08775
Date: Thu, 27 Oct 2016 13:45:34 GMT   (217kb,D)

Title: Exclusive pi+ pi- production at 7TeV
Authors: Mohsen Khakzad
Categories: hep-ex
Comments: 6 pages, 8 figures, DIS 2016
\\
  We report a measurement of the exclusive production of pairs of charged pions
in proton-proton collisions, dominated by the process $pp \rightarrow p^{(*)}
\pi^{+}\pi^{-} p^{(*)}$, where $\rm p^{(*)}$ stands for a diffractively
dissociated proton, the $\pi^{+} \pi^{-}$ pair is emitted at central rapidities
$y$, and the incident protons stay intact or dissociate without detection ${\rm
p^{(*)}}$. The measurement is performed with the CMS detector at the LHC, using
a data sample corresponding to an integrated luminosity of 450~$\mu$b$^{-1}$
collected at a center-of-mass energy of $\sqrt{s}$ = 7 TeV in 2010. The cross
section measured in the phase space defined by pion transverse momentum $p_{\rm
T}>0.2$~GeV/c and rapidity $|y|< 2 $ is found to be $20.5~\pm~0.3~(\rm
{stat})~(\pm~3.1~\rm {syst})~\pm$~0.8~(lumi)~$\mu$b. The differential cross
sections for $\pi^{+}\pi^{-}$ pairs as a function of the pion pair invariant
mass, $p_{\rm T}$, and $y$, as well as a single-pion differential cross section
as a function of pion $p_{\rm T}$ are also measured and compared to several
phenomenological predictions.
\\ ( https://arxiv.org/abs/1610.08775 ,  217kb)
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arXiv:1610.08922
Date: Thu, 27 Oct 2016 18:42:51 GMT   (625kb)

Title: Electron Ion Collider: Physics and Prospects
Authors: Hugh E. Montgomery
Categories: hep-ex hep-ph nucl-ex physics.acc-ph
Comments: 9 pages, 5 figures
Report-no: JLAB-PHY-16-2310
\\
  We give an outline of the anticipated physics program for a future electron
ion collider. The status and prospects for construction of such a device are
discussed.
\\ ( https://arxiv.org/abs/1610.08922 ,  625kb)
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arXiv:1610.08603 (*cross-listing*)
Date: Thu, 27 Oct 2016 03:51:24 GMT   (71kb,D)

Title: Ordered Kinematic Endpoints for 5-body Cascade Decays
Authors: Matthew D. Klimek
Categories: hep-ph hep-ex
Comments: 26 pages, 3 figures, 4 tables
Report-no: UTTG-17-16
\\
  We present expressions for the kinematic endpoints of 5-body cascade decay
chains proceeding through all possible combinations of 2-body and 3-body
decays, with one stable invisible particle in the final decay stage. When an
invariant mass can be formed in multiple ways by choosing different final state
particles from a common vertex, we introduce techniques for finding the
sub-leading endpoints for all indistinguishable versions of the invariant mass.
In contrast to short decay chains, where sub-leading endpoints are linearly
related to the leading endpoints, we find that in 5-body decays, they provide
additional independent constraints on the mass spectrum.
\\ ( https://arxiv.org/abs/1610.08603 ,  71kb)
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arXiv:1610.08632 (*cross-listing*)
Date: Thu, 27 Oct 2016 06:47:44 GMT   (475kb,D)

Title: The effect of dark matter velocity profile on directional detection of
  dark matter
Authors: Ranjan Laha
Categories: astro-ph.CO astro-ph.GA hep-ex nucl-ex
Comments: v1: 8 pages, 6 figures. Comments welcome
\\
  Directional detection is an important way to detect dark matter. An input to
these experiments is the dark matter velocity distribution. Recent
hydrodynamical simulations have shown that the dark matter velocity
distribution differs substantially from the Standard Halo Model. We study the
impact of some of these updated velocity distribution in dark matter
directional detection experiments. We calculate the ratio of events required to
confirm the forward-backward asymmetry and the existence of the ring of maximum
recoil rate using different dark matter velocity distributions for $^{19}$F and
Xe targets. We show that with the use of updated dark matter velocity profiles,
the forward-backward asymmetry and the ring of maximum recoil rate can be
confirmed using a factor of $\sim$2 -- 3 less events when compared to that
using the Standard Halo Model.
\\ ( https://arxiv.org/abs/1610.08632 ,  475kb)
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arXiv:1610.08788 (*cross-listing*)
Date: Wed, 26 Oct 2016 16:08:00 GMT   (334kb)

Title: $\gamma^\ast N \to N^\ast(1520)$ form factors in the timelike regime
Authors: G. Ramalho and M.T. Pe\~na
Categories: nucl-th hep-ex hep-ph nucl-ex
Comments: 12 pages, 10 figures
\\
  The covariant spectator quark model, tested before in a variety of
electromagnetic baryon excitations, is applied here to the $\gamma^\ast N \to
N^\ast(1520)$ reaction in the timelike regime. The transition form factors are
first parametrized in the spacelike region in terms of a valence quark core
model together with a parametrization of the meson cloud contribution. The form
factor behavior in the timelike region is then predicted, as well as the
$N^\ast(1520) \to \gamma N$ decay width and the $N^\ast (1520)$ Dalitz decay,
$N^\ast (1520) \to e^+ e^- N$. Our results may help in the interpretation of
dielectron production from elementary $pp$ collisions and from the new
generation of HADES results using a pion beam. In the $q^2=0$--1 GeV$^2$ range
we conclude that the {\it QED approximation} (a $q^2$ independent form factor
model) underestimates the electromagnetic coupling of the $N^\ast(1520)$ from 1
up to 2 orders of magnitude. We conclude also that the $N^\ast (1520)$ and the
$\Delta(1232)$ Dalitz decay widths are comparable.
\\ ( https://arxiv.org/abs/1610.08788 ,  334kb)
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arXiv:1610.08810 (*cross-listing*)
Date: Thu, 27 Oct 2016 14:44:00 GMT   (2524kb,D)

Title: LHC vector resonance searches in the $t\bar{t} Z$ final state
Authors: Mihailo Backovi\'c, Thomas Flacke, Bithika Jain, Seung J. Lee
Categories: hep-ph hep-ex
Comments: 37 pages, 6 figures, 9 tables
Report-no: CTPU-16-30, KIAS - P16078
MSC-class: 81T99
ACM-class: J.2
\\
  LHC searches for BSM resonances in $l^+ l^-, \, jj, \, t\bar{t}, \gamma
\gamma$ and $VV$ final states have so far not resulted in discovery of new
physics. Current results set lower limits on mass scales of new physics
resonances well into the $\mathcal{O}(1)$ TeV range, assuming that the new
resonance decays dominantly to a pair of Standard Model particles. While the SM
pair searches are a vital probe of possible new physics, it is important to
re-examine the scope of new physics scenarios probed with such final states.
Scenarios where new resonances decay dominantly to final states other than SM
pairs, even though well theoretically motivated, lie beyond the scope of SM
pair searches. In this paper we argue that LHC searches for (vector) resonances
beyond two particle final states would be useful complementary probes of new
physics scenarios. As an example, we consider a class of composite Higgs
models, and identify specific model parameter points where the color singlet,
electrically neutral vector resonance $\rho_0$ decays dominantly not to a pair
of SM particles, but to a fermionic top partner $T_{f1}$ and a top quark, with
$T_{f1} \rightarrow tZ$. We show that dominant decays of $\rho_0 \rightarrow
T_{f1} t$ in the context of Composite Higgs models are possible even when the
decay channel to a pair of $T_{f1}$ is kinematically open. Our analysis deals
with scenarios where both $m_\rho$ and $m_{T_{f1}}$ are of $\mathcal{O}(1)$
TeV, leading to highly boosted $t\bar{t}Z$ final state topologies. We show that
the particular composite Higgs scenario we consider is discoverable at the
LHC13 with as little as 30 fb$^{-1}$, while being allowed by other existing
experimental constraints.
\\ ( https://arxiv.org/abs/1610.08810 ,  2524kb)
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arXiv:1610.08883 (*cross-listing*)
Date: Thu, 27 Oct 2016 17:01:01 GMT   (7956kb,D)

Title: PandaX-III: Searching for Neutrinoless Double Beta Decay with High
  Pressure $^{136}$Xe Gas Time Projection Chambers
Authors: Xun Chen, Changbo Fu, Javier Galan, Karl Giboni, Franco Giuliani,
  Linghui Gu, Ke Han, Xiangdong Ji, Heng Lin, Jianglai Liu, Kaixiang Ni, Hiroki
  Kusano, Xiangxiang Ren, Shaobo Wang, Yong Yang, Dan Zhang, Tao Zhang, Li
  Zhao, Xiangming Sun, Shouyang Hu, Siyu Jian, Xinglong Li, Xiaomei Li, Hao
  Liang, Huanqiao Zhang, Mingrui Zhao, Jing Zhou, Yajun Mao, Hao Qiao, Siguang
  Wang, Ying Yuan, Meng Wang, Amir N. Khan, Neill Raper, Jian Tang, Wei Wang,
  Jianing Dong, Changqing Feng, Chen Li, Jianbei Liu, Shubin Liu, Xiaolian
  Wang, Danyang Zhu, Juan F. Castel, Susana Cebri\'an, Theopisti Dafni, Javier
  G. Garza, Igor G. Irastorza, Francisco J. Iguaz, Gloria Luz\'on, Hector
  Mirallas, Stephan Aune, Eric Berthoumieux, Yann Bedfer, Denis Calvet, Nicole
  d'Hose, Alain Delbart, Maria Diakaki, Esther Ferrer-Ribas, Andrea Ferrero,
  Fabienne Kunne, Damien Neyret, Thomas Papaevangelou, Franck Sabati\'e,
  Maxence Vanderbroucke, Andi Tan, Wick Haxton, Yuan Mei, Chinorat Kobdaj,
  Yu-Peng Yan
Categories: physics.ins-det hep-ex nucl-ex
\\
  Searching for the Neutrinoless Double Beta Decay (NLDBD) is now regarded as
the topmost promising technique to explore the nature of neutrinos after the
discovery of neutrino masses in oscillation experiments. PandaX-III (Particle
And Astrophysical Xenon Experiment III) will search for the NLDBD of \xeots at
the China Jin Ping underground Laboratory (CJPL). In the first phase of the
experiment, a high pressure gas Time Projection Chamber (TPC) will contain 200
kg, 90\% \xeots enriched gas operated at 10 bar. Fine pitch micro-pattern gas
detector (Microbulk Micromegas) will be used at both ends of the TPC for the
charge readout with a cathode in the middle. Charge signals can be used to
reconstruct tracks of NLDBD events and provide good energy and spatial
resolution. The detector will be immersed in a large water tank to ensure
$\sim$5~m of water shielding in all directions. The second phase, a ton-scale
experiment, will consist of five TPCs in the same water tank, with improved
energy resolution and better control over backgrounds.
\\ ( https://arxiv.org/abs/1610.08883 ,  7956kb)
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arXiv:1606.05329 (*cross-listing*)
replaced with revised version Thu, 27 Oct 2016 04:02:39 GMT   (38kb)

Title: 125 GeV Higgs boson mass and muon g-2 in 5D MSSM
Authors: Nobuchika Okada, Hieu Minh Tran
Categories: hep-ph hep-ex hep-th
Comments: 21 pages, 1 figure, Published in Physical Review D, October 2016
DOI: 10.1103/PhysRevD.94.075016
\\ ( https://arxiv.org/abs/1606.05329 ,  38kb)
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arXiv:1606.06732 (*cross-listing*)
replaced with revised version Thu, 27 Oct 2016 12:49:26 GMT   (143kb,D)

Title: The semi-inclusive jet function in SCET and small radius resummation for
  inclusive jet production
Authors: Zhong-Bo Kang, Felix Ringer, Ivan Vitev
Categories: hep-ph hep-ex
Comments: 35 pages, 11 figures, published version at JHEP
Journal-ref: JHEP 10 (2016) 125
DOI: 10.1007/JHEP10(2016)125
\\ ( https://arxiv.org/abs/1606.06732 ,  143kb)
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arXiv:1609.00199 (*cross-listing*)
replaced with revised version Thu, 27 Oct 2016 10:47:19 GMT   (1184kb)

Title: Semileptonic decays of $\Lambda_b$ baryons in the relativistic quark
  model
Authors: R. N. Faustov, V. O. Galkin
Categories: hep-ph hep-ex
Comments: 23 pages, 8 figures, references added, published version
Journal-ref: Phys. Rev. D 94, 073008 (2016)
DOI: 10.1103/PhysRevD.94.073008
\\ ( https://arxiv.org/abs/1609.00199 ,  1184kb)
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arXiv:1609.05597 (*cross-listing*)
replaced with revised version Thu, 27 Oct 2016 13:44:47 GMT   (440kb,D)

Title: Proton-proton hollowness at the LHC from inverse scattering
Authors: Enrique Ruiz Arriola, Wojciech Broniowski
Categories: nucl-th hep-ex hep-ph
Comments: 8 pages, 4 figures,expanded version
\\ ( https://arxiv.org/abs/1609.05597 ,  440kb)
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arXiv:1610.03038 (*cross-listing*)
replaced with revised version Thu, 27 Oct 2016 18:23:33 GMT   (295kb,D)

Title: A closer look at the $R_D$ and $R_{D^*}$ anomalies
Authors: Debjyoti Bardhan, Pritibhajan Byakti, Diptimoy Ghosh
Categories: hep-ph hep-ex
Comments: Discussion on forward-backward asymmetry of the tau lepton added,
  some numerical typos corrected and many references added, 39 pages
\\ ( https://arxiv.org/abs/1610.03038 ,  295kb)
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