Date: Thu, 27 Jun 19 00:30:54 GMT Subject: hep-ex daily 2 new + 7 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: hep-ex@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Tue 25 Jun 19 18:00:00 GMT to Wed 26 Jun 19 18:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1906.10952 Date: Wed, 26 Jun 2019 10:18:04 GMT (627kb,D) Title: Charm mixing and CPV Authors: Fabio Ferrari (on behalf of the LHCb collaboration) Categories: hep-ex Comments: 7 pages, 6 figures. Proceedings of the 2019 Conference on Flavor Physics and CP Violation (FPCP2019) \\ In these proceedings, recent results on time-dependent and time-integrated measurements of $C\!P$ violation and of meson mixing in the charm sector are presented, including the first observation of $C\!P$ violation in the charm system. \\ ( https://arxiv.org/abs/1906.10952 , 627kb) ------------------------------------------------------------------------------ \\ arXiv:1906.11005 Date: Wed, 26 Jun 2019 12:03:03 GMT (785kb,D) Title: Identification of boosted Higgs bosons decaying into $b$-quark pairs with the ATLAS detector at 13 TeV Authors: ATLAS Collaboration Categories: hep-ex Comments: 54 pages in total, author list starting page 38, 20 figures, 3 tables, submitted to Eur. Phys. J. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/PERF-2017-04 Report-no: CERN-EP-2019-085 \\ This paper describes a study of techniques for identifying Higgs bosons at high transverse momenta decaying into bottom-quark pairs, $H \rightarrow b\bar{b}$, for proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy $\sqrt{s}=13$ TeV. These decays are reconstructed from calorimeter jets found with the anti-$k_{t}$ $R = 1.0$ jet algorithm. To tag Higgs bosons, a combination of requirements is used: $b$-tagging of $R = 0.2$ track-jets matched to the large-$R$ calorimeter jet, and requirements on the jet mass and other jet substructure variables. The Higgs boson tagging efficiency and corresponding multijet and hadronic top-quark background rejections are evaluated using Monte Carlo simulation. Several benchmark tagging selections are defined for different signal efficiency targets. The modelling of the relevant input distributions used to tag Higgs bosons is studied in 36 fb$^{-1}$ of data collected in 2015 and 2016 using $g\to b\bar{b}$ and $Z(\rightarrow b\bar{b})\gamma$ event selections in data. Both processes are found to be well modelled within the statistical and systematic uncertainties. \\ ( https://arxiv.org/abs/1906.11005 , 785kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1906.10698 (*cross-listing*) Date: Tue, 25 Jun 2019 18:00:03 GMT (4740kb,D) Title: Parton Distributions with Theory Uncertainties: General Formalism and First Phenomenological Studies Authors: The NNPDF Collaboration: Rabah Abdul Khalek, Richard D. Ball, Stefano Carrazza, Stefano Forte, Tommaso Giani, Zahari Kassabov, Rosalyn L. Pearson, Emanuele R. Nocera, Juan Rojo, Luca Rottoli, Maria Ubiali, Cameron Voisey and Michael Wilson Categories: hep-ph hep-ex Comments: 73 pages, 27 figures Report-no: Edinburgh 2019/9, Nikhef/2019-014, TIF-UNIMI-2019-9 DAMTP-2019-24, CAVENDISH-HEP-19-11 \\ We formulate a general approach to the inclusion of theoretical uncertainties, specifically those related to the missing higher order uncertainty (MHOU), in the determination of parton distribution functions (PDFs). We demonstrate how, under quite generic assumptions, theory uncertainties can be included as an extra contribution to the covariance matrix when determining PDFs from data. We then review, clarify, and systematize the use of renormalization and factorization scale variations as a means to estimate MHOUs consistently in deep inelastic and hadronic processes. We define a set of prescriptions for constructing a theory covariance matrix using scale variations, which can be used in global fits of data from a wide range of different processes, based on choosing a set of independent scale variations suitably correlated within and across processes. We set up an algebraic framework for the choice and validation of an optimal prescription by comparing the estimate of MHOU encoded in the next-to-leading order (NLO) theory covariance matrix to the observed shifts between NLO and NNLO predictions. We perform a NLO PDF determination which includes the MHOU, assess the impact of the inclusion of MHOUs on the PDF central values and uncertainties, and validate the results by comparison to the known shift between NLO and NNLO PDFs. We finally study the impact of the inclusion of MHOUs in a global PDF determination on LHC cross-sections, and provide guidelines for their use in precision phenomenology. In addition, we also compare the results based on the theory covariance matrix formalism to those obtained by performing PDF determinations based on different scale choices. \\ ( https://arxiv.org/abs/1906.10698 , 4740kb) ------------------------------------------------------------------------------ \\ arXiv:1906.10739 (*cross-listing*) Date: Tue, 25 Jun 2019 19:42:58 GMT (556kb,D) Title: Electroweak Symmetric Dark Matter Balls Authors: Eduardo Pont\'on, Yang Bai and Bithika Jain Categories: hep-ph astro-ph.HE hep-ex Comments: 50 pages, 10 figures \\ In the simple Higgs-portal dark matter model with a conserved dark matter number, we show that there exists a non-topological soliton state of dark matter. This state has smaller energy per dark matter number than a free particle state and has its interior in the electroweak symmetric vacuum. It could be produced in the early universe from first-order electroweak phase transition and contribute most of dark matter. This electroweak symmetric dark matter ball is a novel macroscopic dark matter candidate with an energy density of the electroweak scale and a mass of 1 gram or above. Because of its electroweak-symmetric interior, the dark matter ball has a large geometric scattering cross section off a nucleon or a nucleus. Dark matter and neutrino experiments with a large-size detector like Xenon1T, BOREXINO and JUNO have great potential to discover electroweak symmetric dark matter balls. We also discuss the formation of bound states of a dark matter ball and ordinary matter. \\ ( https://arxiv.org/abs/1906.10739 , 556kb) ------------------------------------------------------------------------------ \\ arXiv:1906.10745 (*cross-listing*) Date: Tue, 25 Jun 2019 19:52:58 GMT (91kb,D) Title: Dark matter signals from timing spectra at neutrino experiments Authors: Bhaskar Dutta, Doojin Kim, Shu Liao, Jong-Chul Park, Seodong Shin, Louis E. Strigari Categories: hep-ph hep-ex Comments: 12 pages, 2 figures, 1 table Report-no: MI-TH-1925 \\ We propose a novel strategy to search for new physics in timing spectra, envisioning the situation in which a new particle comes from the decay of its heavier partner with a finite particle width. The timing distribution of events induced by the dark matter particle scattering at the detector may populate in a relatively narrow range, forming a "resonance-like" shape. Due to this structural feature, the signal may be isolated from the backgrounds, in particular when the backgrounds are uniformly distributed in energy and time. For proof of the principle, we investigate the discovery potential for dark matter from the decay of a dark photon in the COHERENT experiment, and show the exciting prospects for exploring the associated parameter space with this experiment. We analyze the existing CsI detector data with a timing cut and an energy cut, and find, for the first time, an excess in the timing distribution which can be explained by such dark matter. \\ ( https://arxiv.org/abs/1906.10745 , 91kb) ------------------------------------------------------------------------------ \\ arXiv:1906.10768 (*cross-listing*) Date: Tue, 25 Jun 2019 21:54:01 GMT (3169kb,D) Title: DAB-MOD sensitivity study of heavy flavor $R_{AA}$ and azimuthal anisotropies based on beam energy, initial conditions, hadronization, and suppression mechanisms Authors: Roland Katz, Caio A. G. Prado, Jacquelyn Noronha-Hostler, Jorge Noronha, Alexandre A. P. Suaide Categories: nucl-th hep-ex hep-ph Comments: 51 pages \\ Heavy flavor probes provide important information about the in-medium properties of the quark-gluon plasma produced in heavy-ion collisions. In this work, we investigate the effects of 2D+1 event-by-event fluctuating hydrodynamic backgrounds on the nuclear suppression factor and momentum anisotropies of heavy flavor mesons and non-photonic electrons. Using the state-of-the-art D and B mesons modular simulation code (called "DAB-MOD"), we perform a systematic comparison of different transport equations in the same background, including a few energy loss models --- with and without energy loss fluctuations --- and a relativistic Langevin model with different drag parametrizations. We present the resulting D and B mesons $R_{AA}$, $v_2$, $v_3$, and $v_4$ as well as multi-particle cumulants, in AuAu collisions at $\sqrt{s_\text{NN}}=200\, \text{GeV}$ and PbPb collisions at $\sqrt{s_\text{NN}}=2.76 \, \text{TeV}$ and $\sqrt{s_\text{NN}}=5.02 \, \text{TeV}$, and compare them to the available experimental data. The $v_2\{4\}/v_2\{2\}$ ratio, which is known to be a powerful probe of the initial conditions and flow fluctuations in the soft sector, is also studied in the context of heavy flavor. We also investigate the correlations between the transverse anisotropies of heavy mesons and all charged particles to better understand how heavy quarks couple to the hydrodynamically expanding quark-gluon plasma. \\ ( https://arxiv.org/abs/1906.10768 , 3169kb) ------------------------------------------------------------------------------ \\ arXiv:1906.10831 (*cross-listing*) Date: Wed, 26 Jun 2019 03:51:49 GMT (74kb,D) Title: Improved Extrapolation Methods of Data-driven Background Estimation in High-Energy Physics Authors: Suyong Choi and Hayoung Oh Categories: hep-ph hep-ex Comments: 11 pages, 5 figures \\ The data-driven methods of background estimations are widely used in cases where it is difficult to obtain reliable descriptions of backgrounds. In hadron collisions, multi-jet events are major sources of backgrounds, but they are not described with sufficient accuracy from theory. Therefore, in final states involving many jets, data-driven methods are often used to estimate the backgrounds to the processes of interest. In this letter, we improve upon one of the most widely used data-driven methods used for hadron collision environment, the "ABCD" method of extrapolation. We describe the mathematical background behind the data-driven methods and extend the idea to propose improvements to the methods. \\ ( https://arxiv.org/abs/1906.10831 , 74kb) ------------------------------------------------------------------------------ \\ arXiv:1906.11089 (*cross-listing*) Date: Wed, 26 Jun 2019 13:36:56 GMT (154kb,D) Title: Exotic $\Omega\Omega$ dibaryon states in a molecular picture Authors: Xiao-Hui Chen, Qi-Nan Wang, Wei Chen, and Hua-Xing Chen Categories: hep-ph hep-ex hep-lat Comments: 5 pages, 5 figures. Comments and suggestions are welcome \\ We investigate the exotic $\Omega\Omega$ dibaryon states with $J^P=0^+$ and $2^+$ in a molecular picture. We construct the scalar and tensor $\Omega$$\Omega$ molecular interpolating currents and calculate their masses within the method of QCD sum rules. Our results indicate that the mass of the scalar dibaryon state is $m_{\Omega\Omega, \, 0^+}=(3.33\pm0.22) \,\unit$, which is about $15 \,\mathrm{MeV}$ below the $2m_\Omega$ threshold. This result suggests the existence of a loosely bound molecular state of the $J^P=0^+$ scalar $\Omega\Omega$ dibaryon with a small binding energy around 15 MeV. The mass of the tensor dibaryon is predicted to be $m_{\Omega\Omega,\, 2^+}=(3.24\pm0.23)\, \mbox{GeV}$, which may imply a deeper molecular state of the tensor $\Omega\Omega$ dibaryon than the scalar channel. These exotic strangeness $S=-6$ and doubly-charged $\Omega\Omega$ dibaryon states may be identified in the heavy-ion collision processes. \\ ( https://arxiv.org/abs/1906.11089 , 154kb) ------------------------------------------------------------------------------ \\ arXiv:1906.11115 (*cross-listing*) Date: Wed, 26 Jun 2019 14:15:41 GMT (32kb) Title: Cascade and Omega productions from Pb+Pb Collisions at LHC energy Authors: Purabi Ghosh, Jajati K. Nayak, Sushant K. Singh and Santosh K. Agarwalla Categories: nucl-th hep-ex hep-ph Comments: 8 pages, 8 figures \\ Production of multi strange hadrons like cascade ($\Xi$) and omega($\Omega$) baryons are studied microscopically using rate equation at LHC energy. The rate equations for $\Xi$, $\Omega$ are solved simultaneously with other strange hadrons in an expanding medium. The results for $\Xi$ and $\Omega$ are compared with the data obtained from Pb-Pb collisions at $\sqrt{s_{NN}}$= 2.76 TeV from ALICE experiments. The ratio of yields of $\Xi$ and $\Omega$ to $\pi$ are analysed with various initial conditions and compared with the experimental observations made for various charge particle multiplicities. \\ ( https://arxiv.org/abs/1906.11115 , 32kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1809.03590 replaced with revised version Wed, 26 Jun 2019 12:33:48 GMT (372kb,D) Title: Search for the associated production of the Higgs boson and a vector boson in proton-proton collisions at $\sqrt{s} =$ 13 TeV via Higgs boson decays to $\tau$ leptons Authors: CMS Collaboration Categories: hep-ex Comments: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-18-007 (CMS Public Pages) Report-no: CMS-HIG-18-007, CERN-EP-2018-221 Journal-ref: JHEP 06 (2019) 093 DOI: 10.1007/JHEP06(2019)093 \\ ( https://arxiv.org/abs/1809.03590 , 372kb) ------------------------------------------------------------------------------ \\ arXiv:1901.05165 (*cross-listing*) replaced with revised version Wed, 26 Jun 2019 12:13:48 GMT (61kb) Title: Effective axial-vector current coupling and isoscalar pairing interaction for quasiparticle random-phase approximation approach to double-$\beta$ and $\beta$ decays Authors: J. Terasaki, Y. Iwata Categories: nucl-th hep-ex nucl-ex Comments: 13 pages, 15 figures \\ ( https://arxiv.org/abs/1901.05165 , 61kb) ------------------------------------------------------------------------------ \\ arXiv:1902.01984 (*cross-listing*) replaced with revised version Tue, 25 Jun 2019 23:50:54 GMT (342kb) Title: Thrust Distribution in Electron-Positron Annihilation using the Principle of Maximum Conformality Authors: Sheng-Quan Wang, Stanley J. Brodsky, Xing-Gang Wu, Leonardo Di Giustino Categories: hep-ph hep-ex Comments: 6 pages, 4 figures, v2: matches published version Journal-ref: Phys. Rev. D 99, 114020 (2019) \\ ( https://arxiv.org/abs/1902.01984 , 342kb) ------------------------------------------------------------------------------ \\ arXiv:1902.07158 replaced with revised version Wed, 26 Jun 2019 16:18:25 GMT (579kb,D) Title: Combinations of single-top-quark production cross-section measurements and $|f_{\rm LV}V_{tb}|$ determinations at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS experiments Authors: ATLAS and CMS Collaborations Categories: hep-ex Comments: 81 pages in total, author list starting page 44, 5 figures, 13 tables, JHEP 05 (2019) 088. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2017-16/ and http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-17-006/ Report-no: CERN-EP-2019-005 Journal-ref: JHEP 05 (2019) 088 DOI: 10.1007/JHEP05(2019)088 \\ ( https://arxiv.org/abs/1902.07158 , 579kb) ------------------------------------------------------------------------------ \\ arXiv:1903.02433 replaced with revised version Wed, 26 Jun 2019 13:43:16 GMT (824kb,D) Title: DijetGAN: A Generative-Adversarial Network Approach for the Simulation of QCD Dijet Events at the LHC Authors: Riccardo Di Sipio, Michele Faucci Giannelli, Sana Ketabchi Haghighat, Serena Palazzo Categories: hep-ex hep-ph Comments: 17 pages, 8 figures \\ ( https://arxiv.org/abs/1903.02433 , 824kb) ------------------------------------------------------------------------------ \\ arXiv:1904.03261 replaced with revised version Tue, 25 Jun 2019 18:12:50 GMT (1095kb,D) Title: Charm production in charged current deep inelastic scattering at HERA Authors: ZEUS collaboration: I. Abt, L. Adamczyk, R. Aggarwal, V. Aushev, O. Behnke, U. Behrens, A. Bertolin, I. Bloch, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, P. J. Bussey, A. Caldwell, M. Capua, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, R. K. Dementiev, S. Dusini, J. Ferrando, B. Foster, E. Gallo, D. Gangadharan, A. Garfagnini, A. Geiser, L. K. Gladilin, Yu. A. Golubkov, G. Grzelak, C. Gwenlan, D. Hochman, N. Z. Jomhari, I. Kadenko, S. Kananov, U. Karshon, P. Kaur, R. Klanner, U. Klein, I. A. Korzhavina, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, B. B. Levchenko, A. Levy, B. L\"ohr, E. Lohrmann, A. Longhin, O. Yu. Lukina, I. Makarenko, J. Malka, S. Masciocchi, K. Nagano, J. D. Nam, J. Onderwaater, Yu. Onishchuk, E. Paul, I. Pidhurskyi, A. Polini, M. Przybycie\'n, A. Quintero, M. Ruspa, D. H. Saxon, U. Schneekloth, T. Sch\"orner-Sadenius, I. Selyuzhenkov, M. Shchedrolosiev, L. M. Shcheglova, O. Shkola, I. O. Skillicorn, W. S{\l}omi\'nski, A. Solano, L. Stanco, N. Stefaniuk, P. Stopa, B. Surrow, J. Sztuk-Dambietz, E. Tassi, K. Tokushuku, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, W. A. T. Wan Abdullah, K. Wichmann, M. Wing, S. Yamada, Y. Yamazaki, A. F. \. Zarnecki, L. Zawiejski, O. Zenaiev Categories: hep-ex Report-no: DESY-19-054 \\ ( https://arxiv.org/abs/1904.03261 , 1095kb) ------------------------------------------------------------------------------ \\ arXiv:1905.03470 (*cross-listing*) replaced with revised version Wed, 26 Jun 2019 12:44:07 GMT (263kb,D) Title: Pileup and Underlying Event Mitigation with Iterative Constituent Subtraction Authors: Peter Berta, Lucia Masetti, David W. Miller, Martin Spousta Categories: hep-ph hep-ex \\ ( https://arxiv.org/abs/1905.03470 , 263kb) ------------------------------------------------------------------------------ \\ arXiv:1905.07591 (*cross-listing*) replaced with revised version Wed, 26 Jun 2019 06:34:18 GMT (179kb) Title: Double-heavy axial-vector tetraquark $T_{bc;\bar{u}\bar{d}}^{0}$ Authors: S. S. Agaev, K. Azizi, H. Sundu Categories: hep-ph hep-ex hep-lat Comments: 7 Pages, 3 Figures and 2 Tables \\ ( https://arxiv.org/abs/1905.07591 , 179kb) ------------------------------------------------------------------------------ \\ arXiv:1906.08056 (*cross-listing*) replaced with revised version Wed, 26 Jun 2019 15:11:37 GMT (278kb,D) Title: Electroweak corrections to $e^+e^-\to\gamma\gamma$ as a luminosity process at FCC-ee Authors: Carlo M. Carloni Calame, Mauro Chiesa, Guido Montagna, Oreste Nicrosini, Fulvio Piccinini Categories: hep-ph hep-ex Comments: 13 pages, 3 figures, 3 tables. Extended version, with theoretical details and further numerical results, of the contribution to the workshop proceedings arXiv:1905.05078 by the same authors. v2: minor text modification, one reference added \\ ( https://arxiv.org/abs/1906.08056 , 278kb) ------------------------------------------------------------------------------ \\ arXiv:1906.08983 replaced with revised version Tue, 25 Jun 2019 20:15:22 GMT (0kb,I) Title: Searching for leptoquarks with the ATLAS detector Authors: Vincent Wai Sum Wong Categories: hep-ex Comments: The article is currently under ATLAS internal review \\ ( https://arxiv.org/abs/1906.08983 , 0kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arxiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arxiv.org/help/