cicyt UNIZAR

High Energy Physics - Experiment

New submissions

[ total of 28 entries: 1-28 ]
[ showing up to 2000 entries per page: fewer | more ]

New submissions for Fri, 23 Feb 18

[1]  arXiv:1802.08048 [pdf, other]
Title: Yields and production rates of $^9$Li and $^8$He measured with the Double Chooz near and far detectors
Comments: 15 pages, 5 figures
Subjects: High Energy Physics - Experiment (hep-ex); Instrumentation and Detectors (physics.ins-det)

The yields and production rates of the radioisotopes $^9$Li and $^8$He created by cosmic muon spallation on $^{12}$C have been measured by the Double Chooz experiment. Comparing the data to a detailed simulation of the $^9$Li and $^8$He decays, the contribution of the $^8$He radioisotope is found to be compatible with zero. The observed $^9$Li yields in the near ($\sim$120 m.w.e overburden) and far ($\sim$300 m.w.e.) detectors are $4.37\pm0.49$ and $7.98\pm0.52$ respectively, in units of $10^{-8}\,\mathrm{\mu ^{-1}g^{-1}cm^{2} }$. The low overburdens of the near and far detectors gives a unique insight when combined with measurements by KamLAND and Borexino to give the first multi-experiment, data driven relationship between the $^9$Li yield and the mean muon energy according to the power law $Y = Y_0\left<E_\mu\right>^{\overline{\alpha}}$, giving $\overline{\alpha}=0.79\pm0.06$ and $Y_0=(0.29\pm0.09)\times 10^{-8}\,\mathrm{\mu ^{-1}g^{-1}cm^{2} }$. This relationship gives future liquid scintillator based nuclear reactor experiments the ability to predict their cosmogenic $^9$Li background rates.

[2]  arXiv:1802.08168 [pdf, other]
Title: Performance of missing transverse momentum reconstruction with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 13 TeV
Comments: 65 pages in total, author list starting page 49, 19 figures, 2 tables, submitted to EPJC, All figures including auxiliary figures are available at this http URL
Subjects: High Energy Physics - Experiment (hep-ex)

The performance of the missing transverse momentum (E$_{T}^{miss}$) reconstruction with the ATLAS detector is evaluated using data collected in proton-proton collisions at the LHC at a center-of-mass energy of 13 TeV in 2015. To reconstruct E$_{T}^{miss}$, fully calibrated electrons, muons, photons, hadronically decaying $\tau$-leptons, and jets reconstructed from calorimeter energy deposits and charged-particle tracks are used. These are combined with the soft hadronic activity measured by reconstructed charged-particle tracks not associated with the hard objects. Possible double counting of contributions from reconstructed charged-particle tracks from the inner detector, energy deposits in the calorimeter, and reconstructed muons from the muon spectrometer is avoided by applying a signal ambiguity resolution procedure which rejects already used signals when combining the various E$_{T}^{miss}$ contributions. The individual terms as well as the overall reconstructed E$_{T}^{miss}$ are evaluated with various performance metrics for scale (linearity), resolution, and sensitivity to the data-taking conditions. The method developed to determine the systematic uncertainties of the E$_{T}^{miss}$ scale and resolution is discussed. Results are shown based on the full 2015 data sample corresponding to an integrated luminosity of 3.2 fb$^{-1}$.

Cross-lists for Fri, 23 Feb 18

[3]  arXiv:1802.06784 (cross-list from hep-ph) [pdf, other]
Title: Matter Density Profile Shape Effects at DUNE
Comments: 19 pages, 10 figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

Quantum mechanical interactions between neutrinos and matter along the path of propagation, the Wolfenstein matter effect, are of particular importance for the upcoming long-baseline neutrino oscillation experiments, specifically the Deep Underground Neutrino Experiment (DUNE). Here, we explore specifically what about the matter density profile can be measured by DUNE, considering both the shape and normalization of the profile between the neutrinos' origin and detection. Additionally, we explore the capability of a perturbative method for calculating neutrino oscillation probabilities and whether this method is suitable for DUNE. We also briefly quantitatively explore the ability of DUNE to measure the Earth's matter density, and the impact of performing this measurement on measuring standard neutrino oscillation parameters.

[4]  arXiv:1802.06912 (cross-list from hep-ph) [pdf, other]
Title: Particle Physics Constraints on Self-Interacting Dark Matter from PandaX-II Experiment
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

Self-Interacting Dark Matter (SIDM) is a leading candidate to solve the puzzles of the cold dark matter paradigm on galactic scales. We present a particle-physics study on SIDM models in PandaX-II, a direct detection experiment in China JinPing underground Laboratory. We use data collected in 2016 and 2017 runs, corresponding to a total exposure of 54 ton day, the largest published data set of its kind to date. Strong combined limits are set on the mass of the dark-force mediator, its mixing with the standard model particles, and the mass of dark matter. Together with considerations from the Big-Bang Nucleosynthesis, our results put tight constraints on SIDM models.

[5]  arXiv:1802.07237 (cross-list from hep-ph) [pdf, other]
Title: Interpreting top-quark LHC measurements in the standard-model effective field theory
Comments: LHC TOP WG note, 10 pages of main text, 5 appendices, 1 figure, 21 tables
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

This note proposes common standards and prescriptions for the effective-field-theory interpretation of top-quark measurements at the LHC.

[6]  arXiv:1802.07339 (cross-list from hep-ph) [pdf, ps, other]
Title: Exclusive and diffractive $μ^+ μ^-$ production in $pp$ collisions at the LHC
Comments: 9 pages, 6 figures, 3 tables. arXiv admin note: text overlap with arXiv:1705.08834
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)

In this paper we estimate the production of dimuons ($\mu^+ \mu^-$) in exclusive photon -- photon ($\gamma \gamma$) and diffractive Pomeron - Pomeron $(I\!P I\!P)$, Pomeron - Reggeon $(I\!P I\!R)$ and Reggeon - Reggeon $(I\!R I\!R)$ interactions in $pp$ collisions at the LHC energy. The invariant mass, rapidity and tranverse momentum distributions are calculated using the Forward Physics Monte Carlo (FPMC), which allows to obtain realistic predictions for the dimuon production with two leading intact hadrons. In particular, predictions taking into account the CMS and LHCb acceptances are presented. Moreover, the contribution of the single diffraction for the dimuon production also is estimated. Our results demonstrate that the experimental separation of these different mechanisms is feasible. In particular, the events characterized by pairs with large squared transverse momentum are dominated by diffractive interactions, which allows to investigate the underlying assumptions present in the description of these processes.

[7]  arXiv:1802.07357 (cross-list from astro-ph.HE) [pdf]
Title: Tien Shan data on inelastic proton-air cross section at 10 PeV
Authors: N. Nesterova
Comments: 4 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:1506.04291
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics - Experiment (hep-ex)

New data on the absolute value on the inelastic proton-air cross section at 10 PeV are presented. Conclusion is made about the growth with energy of the inelastic proton-air cross section according to comparisons with experimental data were obtained at the Tien Shan complex array on various components of extensive air showers: hadrons, Cherenkov light and electrons with many different calculated models of cosmic rays interactions at the atmosphere. The analysis showed that the rise conforms to 7-9 % per one order of the energy from 0.2 TeV (accelerators with fixed targets) to 10 PeV (EAS cosmic rays). That corresponds to around 350 mb at 1 PeV and 380 mb at 10 PeV of primary cosmic rays. These data corresponds better to the QGSJET-II-04 model version.

[8]  arXiv:1802.07711 (cross-list from hep-ph) [pdf, ps, other]
Title: The electromagnetic multipole moments of the charged open-flavor $Z_{\bar cq}$ states
Authors: K. Azizi, U. Ozdem
Comments: 11 pages, 2 figures and 2 tables
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat)

The electromagnetic multipole moments of the open-flavor $Z_{\bar cq}$ states are investigated by assuming a diquark-antidiquark picture for their internal structure and quantum numbers $J^{PC} = 1^{+-}$ for their spin-parity. In particular, their magnetic and quadrupole moments are extracted in the framework of light-cone QCD sum rule by the help of the photon distribution amplitudes. The electromagnetic multipole moments of the open-flavor $Z_{\bar cq}$ states are important dynamical observables, which encode valuable information on their underlying structure. The results obtained for the magnetic moments of different structures are considerably large and can be measured in future experiments. We obtain very small values for the quadrupole moments of $Z_{\bar cq}$ states indicating a nonspherical charge distribution.

[9]  arXiv:1802.08131 (cross-list from hep-ph) [pdf, other]
Title: Searching for the rules that govern hadron construction
Journal-ref: Nature 534 (2016) no.7608, 487-493
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); Nuclear Experiment (nucl-ex)

Just as Quantum Electrodynamics describes how electrons are bound in atoms by the electromagnetic force, mediated by exchange of photons, Quantum Chromodynamics (QCD) describes how quarks are bound inside hadrons by the strong force, mediated by exchange of gluons. At face value, QCD allows hadrons constructed from increasingly many quarks to exist, just as atoms with increasing numbers of electrons exist, yet such complex constructions seemed, until recently, to not be present in nature. In what follows we describe advances in the spectroscopy of mesons that are refining our understanding of the rules for building hadrons from QCD.

Replacements for Fri, 23 Feb 18

[10]  arXiv:1708.02810 (replaced) [pdf, other]
Title: Measurement of inclusive and differential cross sections in the $H \rightarrow ZZ^* \rightarrow 4\ell$ decay channel in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
Comments: 49 pages in total, author list starting page 33, 11 figures, 4 tables, published in JHEP. All figures including auxiliary figures are available at this http URL
Journal-ref: J. High Energ. Phys. (2017) 2017: 132
Subjects: High Energy Physics - Experiment (hep-ex)
[11]  arXiv:1709.02301 (replaced) [pdf, other]
Title: Measurement of longitudinal flow de-correlations in Pb+Pb collisions at $\sqrt{s_\mathrm{NN}} = 2.76$ and 5.02 TeV with the ATLAS detector
Comments: 27 pages plus author list + cover pages (44 pages total), 22 figures, 5 tables, submitted to Eur. Phys. J. C., All figures including auxiliary figures can be found at this https URL
Journal-ref: Eur. Phys. J. C 76 (2018) 142
Subjects: Nuclear Experiment (nucl-ex); High Energy Physics - Experiment (hep-ex)
[12]  arXiv:1709.07703 (replaced) [pdf, other]
Title: $ZZ \to \ell^{+}\ell^{-}\ell^{\prime +}\ell^{\prime -}$ cross-section measurements and search for anomalous triple gauge couplings in 13 TeV $pp$ collisions with the ATLAS detector
Comments: 59 pages in total, author list starting page 37, 18 figures, 8 tables, published in Phys. Rev. D. All figures including auxiliary figures are available at this https URL
Journal-ref: Phys. Rev. D 97 (2018) 032005
Subjects: High Energy Physics - Experiment (hep-ex)
[13]  arXiv:1710.09154 (replaced) [pdf, other]
Title: Search for supersymmetry in events with at least three electrons or muons, jets, and missing transverse momentum in proton-proton collisions at $\sqrt{s} = $ 13 TeV
Comments: Replaced with the published version. Added the journal reference and DOI. All the figures and tables, including additional supplementary tables, can be found at this http URL (CMS Public Pages)
Journal-ref: JHEP 02 (2018) 067
Subjects: High Energy Physics - Experiment (hep-ex)
[14]  arXiv:1710.10614 (replaced) [pdf, other]
Title: Search for standard model production of four top quarks with same-sign and multilepton final states in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Comments: Replaced with the published version. Added the journal reference and DOI. All the figures and tables, including additional supplementary figures and material, can be found at cms-results.web.cern.ch/cms-results/public-results/publications/TOP-17-009/ (CMS Public Pages)
Journal-ref: Eur. Phys. J. C 78 (2018) 140
Subjects: High Energy Physics - Experiment (hep-ex)
[15]  arXiv:1712.01293 (replaced) [pdf, other]
Title: Probabilistic treatment of the uncertainty from the finite size of weighted Monte Carlo data
Subjects: Data Analysis, Statistics and Probability (physics.data-an); Instrumentation and Methods for Astrophysics (astro-ph.IM); High Energy Physics - Experiment (hep-ex); Statistics Theory (math.ST)
[16]  arXiv:1712.03927 (replaced) [src]
Title: Inclusive production of $W$ and Z Bosons in pp Collisions in a range of center-of-mass energy from 7 to 100 TeV
Comments: The paper needs many modifications. The statements in the body of text and the figures need further studies and clarifications, they are currently misleading
Subjects: High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)
[17]  arXiv:1506.02660 (replaced) [pdf, other]
Title: Fully differential VBF Higgs production at NNLO
Comments: 5 pages, 2 figures, Version 2: Inclusion of bugfix of NLO H+3jet virtual corrections
Journal-ref: Phys. Rev. Lett. 115, 082002 (2015)
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
[18]  arXiv:1703.00343 (replaced) [pdf, other]
Title: Light Neutralino Dark Matter in the NMSSM
Comments: 13 pp, plots and refs added; Modified conclusion based on wider parameter ranges
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
[19]  arXiv:1706.02502 (replaced) [pdf, other]
Title: Colorphilic Spin-2 Resonances in the LHC Dijet Channel
Comments: 23 pages, 4 figures, updated notation and figures
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
[20]  arXiv:1709.01473 (replaced) [pdf, other]
[21]  arXiv:1710.04360 (replaced) [pdf, other]
Title: Status of Sterile Neutrino fits with Global Data
Authors: Alejandro Diaz
Comments: Talk presented at the APS Division of Particles and Fields Meeting (DPF 2017), July 31-August 4, 2017, Fermilab. C170731
Subjects: High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)
[22]  arXiv:1712.07214 (replaced) [pdf, other]
Title: Searching for Hybrid Mesons with GlueX
Authors: Sean Dobbs, for the GlueX Collaboration
Comments: 8 pages, 5 figures, invited talk presented at XVII International Conference on Hadron Spectroscopy and Structure, Salamanca, Spain, 25-29 September, 2017
Subjects: Nuclear Experiment (nucl-ex); High Energy Physics - Experiment (hep-ex)
[23]  arXiv:1706.02696 (replaced) [pdf, ps, other]
Title: $R_{K^{(*)}}$ and related $b\to s\ell\bar\ell$ anomalies in minimal flavor violation framework with $Z'$ boson
Comments: 25 pages, 5 figures, slightly enlarged, comments & references added, matches journal version
Journal-ref: Phys. Rev. D 96, 115022 (2017)
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
[24]  arXiv:1710.01539 (replaced) [pdf, other]
Title: Search for pair production of vector-like quarks in the bW$\overline{\mathrm{b}}$W channel from proton-proton collisions at $\sqrt{s} =$ 13 TeV
Comments: Replaced with the published version. Added the journal reference. All the figures and tables, including additional supplementary figures, can be found at this http URL (CMS Public Pages)
Journal-ref: Phys. Lett. B 779 (2018) 82
Subjects: High Energy Physics - Experiment (hep-ex)
[25]  arXiv:1710.11102 (replaced) [pdf, other]
Title: Connecting $b\to s\ell\bar\ell$ anomalies to enhanced rare nonleptonic $\bar{B}_s^0$ decays in $Z'$ model
Comments: 17 pages, 4 figures, somewhat revised, comments & references added, matches publication
Journal-ref: JHEP 02 (2018) 074
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
[26]  arXiv:1711.00752 (replaced) [pdf, other]
Title: Search for top squarks and dark matter particles in opposite-charge dilepton final states at $\sqrt{s}=$ 13 TeV
Comments: Replaced with the published version. All the figures and tables, including additional supplementary figures and tables, can be found at this http URL (CMS Public Pages)
Journal-ref: Phys. Rev. D 97 (2018) 032009
Subjects: High Energy Physics - Experiment (hep-ex)
[27]  arXiv:1711.05977 (replaced) [pdf, ps, other]
Title: The new $a_1(1420)$ state: structure, mass and width
Comments: 11 Pages and 3 Figures, To be published in Phys. Rev. D
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat)
[28]  arXiv:1712.02984 (replaced) [pdf, other]
Title: A Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam
Comments: 8 pages, 8 figures
Subjects: Nuclear Experiment (nucl-ex); High Energy Physics - Experiment (hep-ex); Instrumentation and Detectors (physics.ins-det)
[ total of 28 entries: 1-28 ]
[ showing up to 2000 entries per page: fewer | more ]

Disable MathJax (What is MathJax?)