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Journal articleObata T, Tsutsumi K, Ueta E, et al., 2023,
MicroRNA-451a inhibits gemcitabine-refractory biliary tract cancer progression by suppressing the MIF-mediated PI3K/AKT pathway
, MOLECULAR THERAPY NUCLEIC ACIDS, Vol: 34, ISSN: 2162-2531 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Observation of triple J/ψ meson production in proton-proton collisions (vol 19, pg 338, 2023)
, NATURE PHYSICS, ISSN: 1745-2473 -
Journal articleAntel C, Battaglieri M, Beacham J, et al., 2023,
Feebly-interacting particles: FIPs 2022Workshop Report
, EUROPEAN PHYSICAL JOURNAL C, Vol: 83, ISSN: 1434-6044 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2023,
Search for direct production of GeV-scale resonances decaying to a pair of muons in proton-proton collisions at √s=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2023,
Observation of four top quark production in proton-proton collisions at √s=13 TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 847, ISSN: 0370-2693The observation of the production of four top quarks in proton-proton collisions is reported, based on a datasample collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018 at the CERN LHCand corresponding to an integrated luminosity of 138 fb−1. Events with two same-sign, three, or four chargedleptons (electrons and muons) and additional jets are analyzed. Compared to previous results in these channels,updated identification techniques for charged leptons and jets originating from the hadronization of b quarks, aswell as a revised multivariate analysis strategy to distinguish the signal process from the main backgrounds, leadto an improved expected signal significance of 4.9 standard deviations above the background-only hypothesis.Four top quark production is observed with a significance of 5.6 standard deviations, and its cross section ismeasured to be 17.7 +3.7−3.5 (stat) +2.3−1.9 (syst) fb, in agreement with the available standard model predictions.
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Journal articleAguerre X, Arnold R, Augier C, et al., 2023,
Measurement of the double-β decay of <SUP>150</SUP>Nd to the 0<sub>1</sub><SUP>+</SUP> excited state of <SUP>150</SUP>Sm in NEMO-3
, EUROPEAN PHYSICAL JOURNAL C, Vol: 83, ISSN: 1434-6044 -
Journal articleKarikar A, Ahmed A, Das K, et al., 2023,
Magnetic and magnetocaloric properties of polycrystalline Pr<inf>1−x</inf>Ca<inf>x</inf>MnO<inf>3</inf> (x ∼ 0.85, 0.90, 0.95) compounds: Emergence of large inverse and conventional magnetocaloric effects
, Journal of Magnetism and Magnetic Materials, Vol: 587, ISSN: 0304-8853Magnetic and magnetocaloric effect have been investigated for the electron doped polycrystalline Pr1−xCaxMnO3 (x ∼ 0.85, 0.90, 0.95) compounds. The experimental outcomes indicate that the nature of the ground state is very much sensitive with the doping concentration. Pr0.15Ca0.85MnO3 compound exhibits antiferromagnetic ground state. In contrast to that ferromagnetic nature was found for the Pr0.10Ca0.90MnO3 and Pr0.05Ca0.95MnO3 compounds. Although, for x∼0.90 ferromagnetic phase was stable. However for x∼ 0.95, the ferromagnetic state is quite unstable. Additionally for the doping concentration x∼ 0.95, the anomalous nature was found in temperature dependent coercivity. Magnetocaloric effect study indicate that antiferromagnetic Pr0.15Ca0.85MnO3 compound exhibits large inverse magnetocaloric effect (10.5 J/kg-K at H = 70 kOe magnetic field). On the other hand, ferromagnetic Pr0.10Ca0.90MnO3 and Pr0.05Ca0.95MnO3 compounds show conventional magnetocaloric effect. The magnetocaloric entropy change for x∼0.90 compound is significantly large (7.5 J/kg-K at H = 70 kOe magnetic field) and comparable with the other reported magnetic refrigerant materials. Universal master curve for magnetic entropy change have been constructed for all the materials having inverse and conventional magnetocaloric effect by proper scaling of temperature axis.
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Journal articleAnkowski AM, Ashkenazi A, Bacca S, et al., 2023,
Electron scattering and neutrino physics
, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, Vol: 50, ISSN: 0954-3899 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Measurement of the CKM angle <i>γ</i> using the <i>B</i><SUP>±</SUP><i>→ D</i><SUP>*</SUP><i>h</i><SUP>±</SUP> channels
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for Z′ bosons decaying to pairs of heavy Majorana neutrinos in proton-proton collisions at √s = 13 TeV
, The Journal of High Energy Physics, Vol: 2023, ISSN: 1029-8479A search for the production of pairs of heavy Majorana neutrinos (Nℓ) from the decays of Z′ bosons is performed using the CMS detector at the LHC. The data werecollected in proton-proton collisions at a center-of-mass energy of √s = 13 TeV, with an integrated luminosity of 138 fb−1. The signature for the search is an excess in the invariant mass distribution of the final-state objects, two same-flavor leptons (e or μ) and at least two jets. No significant excess of events beyond the expected background is observed. Upper limits at 95% confidence level are set on the product of the Z′ production cross section and its branching fraction to a pair of Nℓ, as functions of Nℓ and Z′ boson masses (mNℓ and mZ′ , respectively) for mZ′ from 0.4 to 4.6 TeV and mNℓ from 0.1 TeV to mZ′ /2. In the theoretical framework of a left-right symmetric model, exclusion bounds in the mNℓ -mZ′plane are presented in both the electron and muon channels. The observed upper limit on mZ′ reaches up to 4.42 TeV. These are the most restrictive limits to date on the mass of Nℓ as a function of the Z′ boson mass.
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Journal articleTumasyan A, Adam W, Ambrogi F, et al., 2023,
First measurement of the forward rapidity gap distribution in pPb collisions at √sNN=8.16 TeV
, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 108, ISSN: 1550-2368For the first time at LHC energies, the forward rapidity gap spectra from proton-lead collisions for both proton and lead dissociation processes are presented. The analysis is performed over 10.4 units of pseudorapidity at a center-of-mass energy per nucleon pair of √𝑠NN=8.16 TeV, almost 300 times higher than in previous measurements of diffractive production in proton-nucleus collisions. For lead dissociation processes, which correspond to the pomeron-lead event topology, the epos-lhc generator predictions are a factor of 2 below the data, but the model gives a reasonable description of the rapidity gap spectrum shape. For the pomeron-proton topology, the epos-lhc, qgsjet ii, and hijing predictions are all at least a factor of 5 lower than the data. The latter effect might be explained by a significant contribution of ultraperipheral photoproduction events mimicking the signature of diffractive processes. These data may be of significant help in understanding the high energy limit of quantum chromodynamics and for modeling cosmic ray air showers.
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Journal articleAbe K, Akhlaq N, Akutsu R, et al., 2023,
Measurements of the ν<sub>μ</sub> and (ν)over-bar<sub>μ</sub>-induced coherent charged pion production cross sections on <SUP>12</SUP>C by the T2K experiment
, PHYSICAL REVIEW D, Vol: 108, ISSN: 2470-0010 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for the Higgs boson decay to a pair of electrons in proton-proton collisions at √s=13 TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 846, ISSN: 0370-2693A search is presented for the Higgs boson decay to a pair of electrons (e+e−) in proton-proton collisions at √s = 13 TeV. The data set was collected with the CMS experiment at the LHC between 2016 and 2018, corresponding to an integrated luminosity of 138 fb−1 . The analysis uses event categories targeting Higgs boson production via gluon fusion and vector boson fusion. The observed upper limit on the Higgs boson branching fraction to an electron pair is 3.0 × 10−4 (3.0 × 10−4 expected) at the 95% confidence level,which is the most stringent limit on this branching fraction to date.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for pair-produced vector-like leptons in final states with third-generation leptons and at least three b quark jets in proton-proton collisions at √s=13 TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 846, ISSN: 0370-2693The first search is presented for vector-like leptons (VLLs) in the context of the “4321 model”, an ultraviolet-complete model with the potential to explain existing B physics measurements that are in tension with standard model predictions. The analyzed data, corresponding to an integrated luminosity of 96.5 fb−1 , were recorded in 2017 and 2018 with the CMS detector at the LHC in proton-proton collisions at √s = 13 TeV. Final states with ≥3 b-tagged jets and two third-generation leptons (ττ, τντ, or ντ ντ) are considered. Upper limits are derived on the VLL production cross section in the VLL mass range 500–1050 GeV. The maximum likelihood fit prefers the presence of signal at the level of 2.8 standard deviations, for a representative VLL mass point of 600 GeV. As a consequence, the observed upper limits are approximately double the expected limits.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of the t(t)over-bar charge asymmetry in events with highly Lorentz-boosted in collisions at √<i>s</i>=13 TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 846, ISSN: 0370-2693The measurement of the charge asymmetry in top quark pair events with highly Lorentz-boosted top quarks decaying to a single lepton and jets is presented. The analysis is performed using proton-proton collisions at √s = 13 TeV with the CMS detector at the LHC and corresponding to an integrated luminosity of 138 fb−1 . The selection is optimized for top quarks produced with large Lorentz boosts, resulting in nonisolated leptons and overlapping jets. The top quark charge asymmetry is measured for events with a t¯t invariant mass larger than 750 GeV and corrected for detector and acceptance effects using a binned maximum likelihood fit. The measured top quark charge asymmetry of (0.42+0.64−0.69 )% is in good agreement with the standard model prediction at next-to-next-to-leading order in quantum chromodynamic perturbation theory with next-to-leading-order electroweak corrections. The result is also presented for two invariant mass ranges, 750–900 and >900 GeV.
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Journal articleArmano M, Audley H, Baird J, et al., 2023,
Tilt-to-length coupling in LISA Pathfinder: A data analysis
, PHYSICAL REVIEW D, Vol: 108, ISSN: 2470-0010 -
Journal articleScandale W, Cerutti F, Esposito LS, et al., 2023,
Beam merging assisted by a bent crystal
, EUROPEAN PHYSICAL JOURNAL PLUS, Vol: 138, ISSN: 2190-5444 -
Journal articleCMS Collaboration, 2023,
Author Correction: A portrait of the Higgs boson by the CMS experiment ten years after the discovery.
, Nature, Vol: 623, Pages: E4-E4, ISSN: 0028-0836 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Performance of the local reconstruction algorithms for the CMS hadron calorimeter with Run 2 data
, Journal of Instrumentation, Vol: 18, ISSN: 1748-0221A description is presented of the algorithms used to reconstruct energy deposited in the CMS hadron calorimeter during Run 2 (2015–2018) of the LHC. During Run 2, the characteristic bunch-crossing spacing for proton-proton collisions was 25 ns, which resulted in overlapping signals from adjacent crossings. The energy corresponding to a particular bunch crossing of interest is estimated using the known pulse shapes of energy depositions in the calorimeter, which are measured as functions of both energy and time. A variety of algorithms were developed to mitigate the effects of adjacent bunch crossings on local energy reconstruction in the hadron calorimeter in Run 2, and their performance is compared.
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Journal articleAdam W, Bergauer T, Damanakis K, et al., 2023,
Evaluation of planar silicon pixel sensors with the RD53A readout chip for the Phase-2 Upgrade of the CMS Inner Tracker
, JOURNAL OF INSTRUMENTATION, Vol: 18, ISSN: 1748-0221 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Observation of the B<SUP>+</SUP>→ Jψη<SUP>′</SUP>K<SUP>+</SUP> decay (vol 2023, 174, 2023)
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Observation of New Baryons in the Ξ<i><sub>b</sub></i><SUP>-</SUP> π<i><SUP>+</SUP></i>π<i><SUP>-</SUP></i> and Ξ<i><sub>b</sub></i><SUP>0</SUP>π<SUP>+</SUP>π<SUP>-</SUP> Systems
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Precision Measurement of<i> CP</i> Violation in the Penguin-Mediated Decay B0s<i> →φφ</i>
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Evidence for the decays B<SUP>0</SUP> → (D)over-bar<SUP>(*)0</SUP>φ and updated measurements of the branching fractions of the B<sub>s</sub><SUP>0</SUP> → (D)over-bar<SUP>(*)0</SUP>φ decays
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at √sNN = 5.02 TeV
, The Journal of High Energy Physics, Vol: 2023, ISSN: 1029-8479The second-order (v2) and third-order (v3) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/ψ, as well asprompt ψ(2S) mesons are measured in lead-lead collisions at a center-of-mass energy per nucleon pair of √sNN = 5.02 TeV. The analysis uses a data set corresponding to an integrated luminosity of 1.61 nb−1 recorded with the CMS detector. The J/ψ and ψ(2S) mesons are reconstructed using their dimuon decay channel. The v2 and v3 coefficients are extracted using the scalar product method and studied as functions of meson transverse momentum and collision centrality. The measured v2 values for prompt J/ψ mesons are found to be larger than those for nonprompt J/ψ mesons. The prompt J/ψ v2 values at high pT arefound to be underpredicted by a model incorporating only parton energy loss effects in a quark-gluon plasma medium. Prompt and nonprompt J/ψ meson v3 and prompt ψ(2S) v2and v3 values are also reported for the first time, providing new information about heavy quark interactions in the hot and dense medium created in heavy ion collisions.
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Journal articleAaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2023,
Observation of the decays <i>B</i><sub>(<i>s</i>)</sub><SUP>0</SUP> → <i>D</i><sub>s1</sub>(2536)<SUP>∓</SUP><i>K</i><SUP>±</SUP>
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleAbe K, Akhlaq N, Akutsu R, et al., 2023,
Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 x 1021 protons on target
, PHYSICAL REVIEW D, Vol: 108, ISSN: 2470-0010 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Observation of τ Lepton pair production in ultraperipheral Pb-Pb collisions at √<i>s<sub>NN</sub></i>=5.02 TeV
, Physical Review Letters, Vol: 131, ISSN: 0031-9007We present an observation of photon-photon production of 𝜏 lepton pairs in ultraperipheral lead-lead collisions. The measurement is based on a data sample with an integrated luminosity of 404 μb−1 collected by the CMS experiment at a center-of-mass energy per nucleon pair of √𝑠𝑁𝑁=5.02 TeV. The 𝛾𝛾→𝜏+𝜏− process is observed for 𝜏+𝜏− events with a muon and three charged hadrons in the final state. The measured fiducial cross section is 𝜎(𝛾𝛾→𝜏+𝜏−)=4.8±0.6(stat)±0.5(syst) μb, where the second (third) term corresponds to the statistical (systematic) uncertainty in 𝜎(𝛾𝛾→𝜏+𝜏−) in agreement with leading-order QED predictions. Using 𝜎(𝛾𝛾→𝜏+𝜏−), we estimate a model-dependent value of the anomalous magnetic moment of the 𝜏 lepton of 𝑎𝜏=0.001+0.055−0.089.
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Journal articleAbe K, Hayato Y, Hiraide K, et al., 2023,
Search for Cosmic-Ray Boosted Sub-GeV Dark Matter Using Recoil Protons at Super-Kamiokande (vol 130, 031802, 2023)
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2023,
Search for the lepton-flavor violating decay of the Higgs boson and additional Higgs bosons in the eμ final state in proton-proton collisions at √s = 13 TeV
, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 108, ISSN: 1550-2368A search for the lepton-flavor violating decay of the Higgs boson and potential additional Higgs bosons with a mass in the range 110–160 GeV to an 𝑒±𝜇∓ pair is presented. The search is performed with a proton-proton collision dataset at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb−1. No excess is observed for the Higgs boson. The observed (expected) upper limit on the 𝑒±𝜇∓ branching fraction for it is determined to be 4.4(4.7) ×10−5 at 95% confidence level, the most stringent limit set thus far from direct searches. The largest excess of events over the expected background in the full mass range of the search is observed at an 𝑒±𝜇∓ invariant mass of approximately 146 GeV with a local (global) significance of 3.8 (2.8) standard deviations.
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