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Working paperTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for high-mass resonances decaying to a jet and a Lorentz-boosted resonance in proton-proton collisions at √<i>s</i>=13 TeV
, Publisher: ELSEVIER- Author Web Link
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- Citations: 1
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for high-mass resonances decaying to a jet and aLorentz-boosted resonance in proton-proton collisions at √s = 13 TeV
, Physics Letters B, Vol: 832, Pages: 1-24, ISSN: 0370-2693A search is reported for high-mass hadronic resonances that decay to a parton and a Lorentz-boosted resonance, which in turn decays into a pair of partons. The search is based on data collected with the CMS detector at the LHC in proton-proton collisions at , corresponding to an integrated luminosity of 138. The boosted resonance is reconstructed as a single wide jet with substructure consistent with a two-body decay. The high-mass resonance is thus considered as a dijet system. The jet substructure information and the kinematic properties of cascade resonance decays are exploited to disentangle the signal from the large quantum chromodynamics multijet background. The dijet mass spectrum is analyzed for the presence of new high-mass resonances, and is found to be consistent with the standard model background predictions. Results are interpreted in a warped extra dimension model where the high-mass resonance is a Kaluza–Klein gluon, the boosted resonance is a radion, and the final state partons are all gluons. Limits on the production cross section are set as a function of the Kaluza–Klein gluon and radion masses. These limits exclude at 95% confidence level models with Kaluza–Klein gluon masses in the range 2.0 to 4.3 TeV and radion masses in the range 0.20 to 0.74 TeV. By exploring a novel experimental signature, the observed limits on the Kaluza–Klein gluon mass are extended by up to about 1 TeV compared to previous searches.
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Journal articleAaij R, Abdelmotteleb ASW, Abellán Beteta C, et al., 2022,
First Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>Z</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> Angular Coefficients in the Forward Region of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> Collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math>
, Physical Review Letters, Vol: 129, ISSN: 0031-9007 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022,
First Measurement of the <i>Z</i> → μ<SUP>+</SUP> μ<SUP>-</SUP> Angular Coefficients in the Forward Region of <i>pp</i> Collisions at √<i>s</i>=13 TeV
, PHYSICAL REVIEW LETTERS, Vol: 129, ISSN: 0031-9007- Author Web Link
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- Citations: 2
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for Higgs boson pair production in the four b quark final state in proton-proton collisions at sqrt[s]=13 TeV
, Physical Review Letters, Vol: 129, ISSN: 0031-9007A search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, and corresponds to an integrated luminosity of 138 fb^{-1}. No deviation from the background-only hypothesis is observed. A 95% confidence level upper limit on the Higgs boson pair production cross section is observed at 3.9 times the standard model prediction for an expected value of 7.8. Constraints are also set on the modifiers of the Higgs field self-coupling, κ_{λ}, and of the coupling of two Higgs bosons to two vector bosons, κ_{2 V}. The observed (expected) allowed intervals at the 95% confidence level are -2.3<κ_{λ}<9.4 (-5.0<κ_{λ}<12.0) and -0.1<κ_{2 V}<2.2 (-0.4<κ_{2 V}<2.5). These are the most stringent observed constraints to date on the HH production cross section and on the κ_{2 V } coupling.
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Journal articleMachado LN, Abe K, Hayato Y, et al., 2022,
Pre-supernova alert system for super-kamiokande
, The Astrophysical Journal: an international review of astronomy and astronomical physics, Vol: 935, Pages: 1-14, ISSN: 0004-637XIn 2020, the Super-Kamiokande (SK) experiment moved to a new stage (SK-Gd) in which gadolinium (Gd) sulfate octahydrate was added to the water in the detector, enhancing the efficiency to detect thermal neutrons and consequently improving the sensitivity to low energy electron anti-neutrinos from inverse beta decay (IBD) interactions. SK-Gd has the potential to provide early alerts of incipient core-collapse supernovae through detection of electron anti-neutrinos from thermal and nuclear processes responsible for the cooling of massive stars before the gravitational collapse of their cores. These pre-supernova neutrinos emitted during the silicon burning phase can exceed the energy threshold for IBD reactions. We present the sensitivity of SK-Gd to pre-supernova stars and the techniques used for the development of a pre-supernova alarm based on the detection of these neutrinos in SK, as well as prospects for future SK-Gd phases with higher concentrations of Gd. For the current SK-Gd phase, high-confidence alerts for Betelgeuse could be issued up to 9 hr in advance of the core collapse itself.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Strategies and performance of the CMS silicon tracker alignment during LHC Run 2
, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, Vol: 1037, ISSN: 0168-9002The strategies for and the performance of the CMS silicon tracking system alignment during the 2015–2018 data-taking period of the LHC are described. The alignment procedures during and after data taking are explained. Alignment scenarios are also derived for use in the simulation of the detector response. Systematic effects, related to intrinsic symmetries of the alignment task or to external constraints, are discussed and illustrated for different scenarios.
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Journal articleAcharya B, Alexandre J, Benes P, et al., 2022,
Search for highly-ionizing particles in <i>pp</i> collisions at the LHC's Run-1 using the prototype MoEDAL detector
, EUROPEAN PHYSICAL JOURNAL C, Vol: 82, ISSN: 1434-6044- Author Web Link
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- Citations: 1
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Journal articleWorkman RL, Burkert VD, Crede V, et al., 2022,
REVIEW OF PARTICLE PHYSICS
, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, Vol: 2022, ISSN: 2050-3911- Author Web Link
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- Citations: 111
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Measurement of the Drell-Yan forward-backward asymmetry at high dilepton masses in proton-proton collisions at root s=13 TeV
, The Journal of High Energy Physics, Vol: 2022, Pages: 1-58, ISSN: 1029-8479A measurement of the forward-backward asymmetry of pairs of oppositely charged leptons (dimuons and dielectrons) produced by the Drell-Yan process in proton-proton collisions is presented. The data sample corresponds to an integrated luminosity of 138 fb−1 collected with the CMS detector at the LHC at a center-of-mass energy of 13 TeV. The asymmetry is measured as a function of lepton pair mass for masses larger than 170 GeV and compared with standard model predictions. An inclusive measurement across both channels and the full mass range yields an asymmetry of 0.612 ± 0.005 (stat) ± 0.007 (syst). As a test of lepton flavor universality, the difference between the dimuon and dielectron asymmetries is measured as well. No statistically significant deviations from standard model predictions are observed. The measurements are used to set limits on the presence of additional gauge bosons. For a Z′ boson in the sequential standard model the observed (expected) 95% confidence level lower limit on the Z′ mass is 4.4 TeV (3.7 TeV).
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Journal articleAcero MA, Adamson P, Aliaga L, et al., 2022,
Improved measurement of neutrino oscillation parameters by the NOvA experiment
, Physical Review D, Vol: 106, ISSN: 2470-0010We present new νμ→νe, νμ→νμ, ν¯μ→ν¯e, and ν¯μ→ν¯μ oscillation measurements by the NOvA experiment, with a 50% increase in neutrino-mode beam exposure over the previously reported results. The additional data, combined with previously published neutrino and antineutrino data, are all analyzed using improved techniques and simulations. A joint fit to the νe, νμ, ν¯e, and ν¯μ candidate samples within the 3-flavor neutrino oscillation framework continues to yield a best-fit point in the normal mass ordering and the upper octant of the θ23 mixing angle, with Δm322=(2.41±0.07)×10-3 eV2 and sin2θ23=0.57-0.04+0.03. The data disfavor combinations of oscillation parameters that give rise to a large asymmetry in the rates of νe and ν¯e appearance. This includes values of the charge parity symmetry (CP) violating phase in the vicinity of δCP=π/2 which are excluded by >3σ for the inverted mass ordering, and values around δCP=3π/2 in the normal ordering which are disfavored at 2σ confidence.
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Journal articleCalabrese R, Fiorini M, Luppi E, et al., 2022,
Performance of the LHCb RICH detectors during LHC Run 2
, JOURNAL OF INSTRUMENTATION, Vol: 17, ISSN: 1748-0221- Author Web Link
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- Citations: 2
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Journal articleAaij R, Beteta CA, Ackernley T, et al., 2022,
Study of coherent J/ψ production in lead-lead collisions at √S<sub>NN</sub>=5 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479- Author Web Link
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- Citations: 7
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Journal articleAbud AA, Abi B, Acciarri R, et al., 2022,
Scintillation light detection in the 6-m drift-length ProtoDUNE Dual Phase liquid argon TPC
, European Physical Journal C: Particles and Fields, Vol: 82, ISSN: 1124-1861DUNE is a dual-site experiment for long-baseline neutrino oscillation studies, neutrino astrophysics and nucleon decay searches. ProtoDUNE Dual Phase (DP) is a 6 × 6 × 6 m3 liquid argon time-projection-chamber (LArTPC) that recorded cosmic-muon data at the CERN Neutrino Platform in 2019–2020 as a prototype of the DUNE Far Detector. Charged particles propagating through the LArTPC produce ionization and scintillation light. The scintillation light signal in these detectors can provide the trigger for non-beam events. In addition, it adds precise timing capabilities and improves the calorimetry measurements. In ProtoDUNE-DP, scintillation and electroluminescence light produced by cosmic muons in the LArTPC is collected by photomultiplier tubes placed up to 7 m away from the ionizing track. In this paper, the ProtoDUNE-DP photon detection system performance is evaluated with a particular focus on the different wavelength shifters, such as PEN and TPB, and the use of Xe-doped LAr, considering its future use in giant LArTPCs. The scintillation light production and propagation processes are analyzed and a comparison of simulation to data is performed, improving understanding of the liquid argon properties.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022,
Constraints on the CKM angle γ from <i>B</i><SUP>±</SUP> → <i>Dh</i><SUP>±</SUP> decays using <i>D</i> → <i>h</i><SUP>±</SUP><i>h</i>′<SUP>∓</SUP>π<SUP>0</SUP> final states
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479- Author Web Link
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- Citations: 1
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for flavor-changing neutral current interactions of the top quark and Higgs Boson in final states with two photons in proton-proton collisions at sqrt[s]=13 TeV.
, Physical Review Letters, Vol: 129, Pages: 1-20, ISSN: 0031-9007Proton-proton interactions resulting in final states with two photons are studied in a search for the signature of flavor-changing neutral current interactions of top quarks (t) and Higgs bosons (H). The analysis is based on data collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb^{-1}. No significant excess above the background prediction is observed. Upper limits on the branching fractions (B) of the top quark decaying to a Higgs boson and an up (u) or charm (c) quark are derived through a binned fit to the diphoton invariant mass spectrum. The observed (expected) 95% confidence level upper limits are found to be 0.019% (0.031%) for B(t→Hu) and 0.073% (0.051%) for B(t→Hc). These are the strictest upper limits yet determined.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at root s=13 TeV
, The Journal of High Energy Physics, Vol: 2022, ISSN: 1029-8479A search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged leptons (electrons or muons) using proton-proton collision data collected by the CMS experiment at s√ = 13 TeV at the CERN LHC. The data correspond to an integrated luminosity of 138 fb−1. The HNLs could be produced through mixing with standard model neutrinos ν. For small values of the HNL mass (<20 GeV) and the square of the HNL-ν mixing parameter (10−7–10−2), the decay length of these particles can be large enough so that the secondary vertex of the HNL decay can be resolved with the CMS silicon tracker. The selected final state consists of one lepton emerging from the primary proton-proton collision vertex, and two leptons forming a displaced, secondary vertex. No significant deviations from the standard model expectations are observed, and constraints are obtained on the HNL mass and coupling strength parameters, excluding previously unexplored regions of parameter space in the mass range 1–20 GeV and squared mixing parameter values as low as 10−7.
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Journal articleScandale W, Arduini G, Cerutti F, et al., 2022,
Multiple scattering of channeled and non-channeled positively charged particles in bent monocrystalline silicon
, EUROPEAN PHYSICAL JOURNAL PLUS, Vol: 137, ISSN: 2190-5444- Author Web Link
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- Citations: 1
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for heavy resonances decaying to Z(ν(ν)over-bar)V(q(q)over-bar') in proton-proton collisions at √s=13 TeV
, PHYSICAL REVIEW D, Vol: 106, ISSN: 2470-0010 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for heavy resonances decaying to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>Z</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>ν</mml:mi><mml:mover accent="true"><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">¯</mml:mo></mml:mrow></mml:mover><mml:mo stretchy="false">)</mml:mo><mml:mi>V</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>q</mml:mi><mml:msup><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi>q</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">¯</mml:mo></mml:mrow></mml:mover></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>
, Physical Review D, Vol: 106, ISSN: 2470-0010 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for new physics in the lepton plus missing transverse momentum final state in proton-proton collisions at root s=13 TeV
, The Journal of High Energy Physics, Vol: 2022, Pages: 1-57, ISSN: 1029-8479A search for physics beyond the standard model (SM) in final states withan electron or muon and missing transverse momentum is presented. The analysis usesdata from proton-proton collisions at a centre-of-mass energy of 13 TeV, collected with theCMS detector at the LHC in 2016–2018 and corresponding to an integrated luminosity of138 fb−1. No significant deviation from the SM prediction is observed. Model-independentlimits are set on the production cross section of W’ bosons decaying into lepton-plusneutrino final states. Within the framework of the sequential standard model, with thecombined results from the electron and muon decay channels a W’ boson with mass lessthan 5.7 TeV is excluded at 95% confidence level. Results on a SM precision test, thedetermination of the oblique electroweak W parameter, are presented using LHC datafor the first time. These results together with those from the direct W’ resonance searchare used to extend existing constraints on composite Higgs scenarios. This is the firstexperimental exclusion on compositeness parameters using results from LHC data otherthan Higgs boson measurements
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Probing charm quark dynamics via multiparticle correlations in Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV
, Physical Review Letters, Vol: 129, ISSN: 0031-9007Multiparticle azimuthal correlations of prompt D^{0} mesons are measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of sqrt[s_{NN}]=5.02 TeV. For the first time, a four-particle cumulant method is used to extract the second Fourier coefficient of the azimuthal distribution (v_{2}) of D^{0} mesons as a function of event centrality and the D^{0} transverse momentum. The ratios of the four-particle v_{2} values to previously measured two-particle cumulant results provide direct experimental access to event-by-event fluctuations of charm quark azimuthal anisotropies. These ratios are also found to be comparable to those of inclusive charged particles in the event. However, hints of deviations are seen in the most central and peripheral collisions. To investigate the origin of flow fluctuations in the charm sector, these measurements are compared to a model implementing fluctuations of charm quark energy loss via collisional or radiative processes in the quark-gluon plasma. These models cannot quantitatively describe the data over the full transverse momentum and centrality ranges, although the calculations with collisional energy loss provide a better description of the data.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for resonances decaying to three W bosons in proton-proton collisions at sqrt[s]=13 TeV
, Physical Review Letters, Vol: 129, ISSN: 0031-9007A search for resonances decaying into a W boson and a radion, where the radion decays into two W bosons, is presented. The data analyzed correspond to an integrated luminosity of 138 fb^{-1} recorded in proton-proton collisions with the CMS detector at sqrt[s]=13 TeV. One isolated charged lepton is required, together with missing transverse momentum and one or two massive large-radius jets, containing the decay products of either two or one W bosons, respectively. No excess over the background estimation is observed. The results are combined with those from a complementary channel with an all-hadronic final state, described in an accompanying paper. Limits are set on parameters of an extended warped extra-dimensional model. These searches are the first of their kind at the LHC.
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Journal article, 2022,
A portrait of the Higgs boson by the CMS experiment ten years after the discovery
, NATURE, Vol: 607, Pages: 60-+, ISSN: 0028-0836- Author Web Link
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- Citations: 59
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Search for resonances decaying to three W bosons in the hadronic final state in proton-proton collisions at ps=13 TeV
, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 106, ISSN: 1550-2368A search for Kaluza-Klein excited vector boson resonances, WKK, decaying in cascade to three W bosons via a scalar radion R, WKK→WR→WWW, in a final state containing two or three massive jets is presented. The search is performed with √s=13 TeV proton-proton collision data collected by the CMS experiment at the CERN LHC during 2016–2018, corresponding to an integrated luminosity of 138 fb−1. Two final states are simultaneously probed, one where the two W bosons produced by the R decay are reconstructed as separate, large-radius, massive jets, and one where they are merged into a single large-radius jet. The observed data are in agreement with the standard model expectations. Limits are set on the product of the WKK resonance cross section and branching fraction to three W bosons in an extended warped extra-dimensional model and are the first of their kind at the LHC.
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Journal articleNordlund K, Hori M, Sundholm D, 2022,
Large nuclear scattering effects in antiproton transmission through polymer and metal-coated foils
, PHYSICAL REVIEW A, Vol: 106, ISSN: 2469-9926- Author Web Link
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- Citations: 1
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at root s=13 TeV
, The Journal of High Energy Physics, Vol: 2022, Pages: 1-78, ISSN: 1029-8479The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb−1 of data collected with the CMS detector at the LHC. A measurement of the total inclusive production cross section yields σtot(pp → WZ) = 50.6 ± 0.8 (stat) ± 1.5 (syst) ± 1.1 (lumi) ± 0.5 (theo) pb. Measurements of the fiducial and differential cross sections for several key observables are also performed in all the final-state lepton flavour and charge compositions with a total of three charged leptons, which can be electrons or muons. All results are compared with theoretical predictions computed up to next-to-next-to-leading order in quantum chromodynamics plus next-to-leading or- der in electroweak theory and for various sets of parton distribution functions. The results include direct measurements of the charge asymmetry and the W and Z vector boson polarization. The first observation of longitudinally polarized W bosons in WZ production is reported. Anomalous gauge couplings are searched for, leading to new constraints on beyond-the-standard-model contributions to the WZ triple gauge coupling.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2022,
Probing charm quark dynamics via multiparticle correlations in Pb-Pb collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>NN</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>5.02</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math>
, Physical Review Letters, Vol: 129, ISSN: 0031-9007Multiparticle azimuthal correlations of prompt D0 mesons are measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of √sNN=5.02 TeV. For the first time, a four-particle cumulant method is used to extract the second Fourier coefficient of the azimuthal distribution (v2) of D0 mesons as a function of event centrality and the D0 transverse momentum. The ratios of the four-particle v2 values to previously measured two-particle cumulant results provide direct experimental access to event-by-event fluctuations of charm quark azimuthal anisotropies. These ratios are also found to be comparable to those of inclusive charged particles in the event. However, hints of deviations are seen in the most central and peripheral collisions. To investigate the origin of flow fluctuations in the charm sector, these measurements are compared to a model implementing fluctuations of charm quark energy loss via collisional or radiative processes in the quark-gluon plasma. These models cannot quantitatively describe the data over the full transverse momentum and centrality ranges, although the calculations with collisional energy loss provide a better description of the data.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2022,
Precision measurement of forward Z boson production in proton-proton collisions at √s=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479- Author Web Link
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- Citations: 4
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Journal articleTumasyan A, Adam W, Bergauer T, et al., 2022,
First search for exclusive diphoton production at high mass with tagged protons in proton-proton collisions at sqrt[s]=13 TeV
, Physical Review Letters, Vol: 129, ISSN: 0031-9007A search for exclusive two-photon production via photon exchange in proton-proton collisions, pp→pγγp with intact protons, is presented. The data correspond to an integrated luminosity of 9.4 fb^{-1} collected in 2016 using the CMS and TOTEM detectors at a center-of-mass energy of 13 TeV at the LHC. Events are selected with a diphoton invariant mass above 350 GeV and with both protons intact in the final state, to reduce backgrounds from strong interactions. The events of interest are those where the invariant mass and rapidity calculated from the momentum losses of the forward-moving protons match the mass and rapidity of the central, two-photon system. No events are found that satisfy this condition. Interpreting this result in an effective dimension-8 extension of the standard model, the first limits are set on the two anomalous four-photon coupling parameters. If the other parameter is constrained to its standard model value, the limits at 95% confidence level are |ζ_{1}|<2.9×10^{-13} GeV^{-4} and |ζ_{2}|<6.0×10^{-13} GeV^{-4}.
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