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Journal articleBercellie A, Kroma-Wiley KA, Akhter S, et al., 2023,
Simultaneous Measurement of Muon Neutrino ν<sub>μ</sub> Charged-Current Single π<SUP>+</SUP> Production in CH, C, H<sub>2</sub>O, Fe, and Pb Targets in MINERvA
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of inclusive and differential cross sections for single top quark production in association with a W boson in proton-proton collisions at √<i>s</i>=13TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at √<i>s</i>=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for top squark pair production in a final state with at least one hadronically decaying tau lepton in proton-proton collisions at s = 13 TeV
, Journal of High Energy Physics, Vol: 2023A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collisions at s = 13 TeV is presented in final states containing at least one hadronically decaying tau lepton and large missing transverse momentum. This final state is highly sensitive to scenarios of supersymmetry in which the decay of the top squark to tau leptons is enhanced. The search uses a data sample corresponding to an integrated luminosity of 138 fb−1, which was recorded with the CMS detector during 2016–2018. No significant excess is observed with respect to the standard model predictions. Exclusion limits at 95% confidence level on the masses of the top squark and the lightest neutralino are presented under the assumptions of simplified models. The results probe top squark masses up to 1150 GeV for a nearly massless neutralino. This search covers a relatively less explored parameter space in the context of supersymmetry, and the exclusion limit is the most stringent to date for the model considered here.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for Higgs boson pairs decaying to WW<sup>*</sup>WW<sup>*</sup>, WW<sup>*</sup>ττ, and ττττ in proton-proton collisions at s = 13 TeV
, Journal of High Energy Physics, Vol: 2023The results of a search for Higgs boson pair (HH) production in the WW*WW*, WW*ττ, and ττττ decay modes are presented. The search uses 138 fb−1 of proton-proton collision data recorded by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV from 2016 to 2018. Analyzed events contain two, three, or four reconstructed leptons, including electrons, muons, and hadronically decaying tau leptons. No evidence for a signal is found in the data. Upper limits are set on the cross section for nonresonant HH production, as well as resonant production in which a new heavy particle decays to a pair of Higgs bosons. For nonresonant production, the observed (expected) upper limit on the cross section at 95% confidence level (CL) is 21.3 (19.4) times the standard model (SM) prediction. The observed (expected) ratio of the trilinear Higgs boson self-coupling to its value in the SM is constrained to be within the interval −6.9 to 11.1 (−6.9 to 11.7) at 95% CL, and limits are set on a variety of new-physics models using an effective field theory approach. The observed (expected) limits on the cross section for resonant HH production range from 0.18 to 0.90 (0.08 to 1.06) pb at 95% CL for new heavy-particle masses in the range 250–1000 GeV.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of the top quark pole mass using tt¯+jet events in the dilepton final state in proton-proton collisions at s = 13 TeV
, Journal of High Energy Physics, Vol: 2023A measurement of the top quark pole mass mtpole in events where a top quark-antiquark pair (tt¯) is produced in association with at least one additional jet (tt¯+jet) is presented. This analysis is performed using proton-proton collision data at s = 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3 fb−1. Events with two opposite-sign leptons in the final state (e+e−, μ+μ−, e±μ∓) are analyzed. The reconstruction of the main observable and the event classification are optimized using multivariate analysis techniques based on machine learning. The production cross section is measured as a function of the inverse of the invariant mass of the tt¯+jet system at the parton level using a maximum likelihood unfolding. Given a reference parton distribution function (PDF), the top quark pole mass is extracted using the theoretical predictions at next-to-leading order. For the ABMP16NLO PDF, this results in mtpole = 172.93 ± 1.36 GeV.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for CP violation in t t ¯ H and tH production in multilepton channels in proton-proton collisions at √s = 13 TeV
, Journal of High Energy Physics, Vol: 2023The charge-parity (CP) structure of the Yukawa interaction between the Higgs (H) boson and the top quark is measured in a data sample enriched in the t t ¯ H and tH associated production, using 138 fb −1 of data collected in proton-proton collisions at s = 13 TeV by the CMS experiment at the CERN LHC. The study targets events where the H boson decays via H → WW or H → ττ and the top quarks decay via t → Wb: the W bosons decay either leptonically or hadronically, and final states characterized by the presence of at least two leptons are studied. Machine learning techniques are applied to these final states to enhance the separation of CP -even from CP -odd scenarios. Two-dimensional confidence regions are set on κ t and κ~ t, which are respectively defined as the CP -even and CP -odd top-Higgs Yukawa coupling modifiers. No significant fractional CP -odd contributions, parameterized by the quantity | fCPHtt | are observed; the parameter is determined to be | fCPHtt | = 0.59 with an interval of (0.24, 0.81) at 68% confidence level. The results are combined with previous results covering the H → ZZ and H → γγ decay modes, yielding two- and one-dimensional confidence regions on κ t and κ~ t, while | fCPHtt | is determined to be | fCPHtt | = 0.28 with an interval of | fCPHtt | < 0.55 at 68% confidence level, in agreement with the standard model CP -even prediction of | fCPHtt | = 0. [Figure not available: see fulltext.].
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurements of Higgs boson production in the decay channel with a pair of τ leptons in proton–proton collisions at √s=13 TeV
, European Physical Journal C, Vol: 83, ISSN: 1434-6044Measurements of Higgs boson production, where the Higgs boson decays into a pair of τ leptons, are presented, using a sample of proton-proton collisions collected with the CMS experiment at a center-of-mass energy of [InlineEquation not available: see fulltext.], corresponding to an integrated luminosity of 138 fb-1 . Three analyses are presented. Two are targeting Higgs boson production via gluon fusion and vector boson fusion: a neural network based analysis and an analysis based on an event categorization optimized on the ratio of signal over background events. These are complemented by an analysis targeting vector boson associated Higgs boson production. Results are presented in the form of signal strengths relative to the standard model predictions and products of cross sections and branching fraction to τ leptons, in up to 16 different kinematic regions. For the simultaneous measurements of the neural network based analysis and the analysis targeting vector boson associated Higgs boson production signal strengths are found to be 0.82 ± 0.11 for inclusive Higgs boson production, 0.67 ± 0.19 (0.81 ± 0.17) for the production mainly via gluon fusion (vector boson fusion), and 1.79 ± 0.45 for vector boson associated Higgs boson production.
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Journal articleAaij R, Abdelmotteleb ASW, Abellan Beteta C, et al., 2023,
Test of lepton flavor universality using B0 →D∗-τ+ντ decays with hadronic τ channels
, Physical Review D, Vol: 108, ISSN: 2470-0010The branching fraction B(B0→D∗-τ+ντ) is measured relative to that of the normalization mode B0→D∗-π+π-π+ using hadronic τ+→π+π-π+(π0)ν¯τ decays in proton-proton collision data at a center-of-mass energy of 13 TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 2 fb-1. The measured ratio is B(B0→D∗-τ+ντ)/B(B0→D∗-π+π-π+)=1.70±0.10-0.10+0.11, where the first uncertainty is statistical and the second is related to systematic effects. Using established branching fractions for the B0→D∗-π+π-π+ and B0→D∗-μ+νμ modes, the lepton universality test R(D∗-)B(B0→D∗-τ+ντ)/B(B0→D∗-μ+νμ) is calculated, R(D∗-)=0.247±0.015±0.015±0.012, where the third uncertainty is due to the uncertainties on the external branching fractions. This result is consistent with the Standard Model prediction and with previous measurements.
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Journal articleHarada M, Abe K, Bronner C, et al., 2023,
Search for Astrophysical Electron Antineutrinos in Super-Kamiokande with 0.01% Gadolinium-loaded Water
, ASTROPHYSICAL JOURNAL LETTERS, Vol: 951, ISSN: 2041-8205- Author Web Link
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- Citations: 1
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Journal articleTumasyan A, Adam W, Bergauer T, et al., 2023,
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV
, Journal of High Energy Physics, Vol: 2023Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb−1. The search uses two observables, O1 and O3, which are Lorentz scalars. The observable O1 is constructed from the four-momenta of the charged leptons and the reconstructed top quarks, while O3 consists of the four-momenta of the charged leptons and the b quarks originating from the top quarks. Asymmetries in these observables are sensitive to CP violation, and their measurement is used to determine the chromoelectric dipole moment of the top quark. The results are consistent with the expectation from the standard model. [Figure not available: see fulltext.].
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell-Yan production in proton-proton collisions at √<i>s</i>=13TeV
, European Physical Journal C, Vol: 83, ISSN: 1434-6044The double differential cross sections of theDrell–Yan lepton pair ( + −, dielectron or dimuon) produc tion are measured as functions of the invariant mass m ,transverse momentum pT( ), and ϕ∗η . The ϕ∗η observable,derived from angular measurements of the leptons and highlycorrelated with pT( ), is used to probe the low-pT( )region in a complementary way. Dilepton masses up to 1 TeVare investigated. Additionally, a measurement is performedrequiring at least one jet in the final state. To benefit frompartial cancellation of the systematic uncertainty, the ratiosof the differential cross sections for various m ranges tothose in the Z mass peak interval are presented. The collecteddata correspond to an integrated luminosity of 36.3 fb−1 ofproton–proton collisions recorded with the CMS detector atthe LHC at a centre-of-mass energy of 13 TeV. Measurementsare compared with predictions based on perturbative quantum chromodynamics, including soft-gluon resummation.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurements of the Higgs boson production cross section and couplings in the W boson pair decay channel in proton-proton collisions at √s=13TeV
, European Physical Journal C: Particles and Fields, Vol: 83, ISSN: 1434-6052Production cross sections of the standard modelHiggs boson decaying to a pair of W bosons are measuredin proton-proton collisions at a center-of-mass energy of13 TeV. The analysis targets Higgs bosons produced viagluon fusion, vector boson fusion, and in association witha W or Z boson. Candidate events are required to have atleast two charged leptons and moderate missing transversemomentum, targeting events with at least one leptonicallydecaying W boson originating from the Higgs boson. Resultsare presented in the form of inclusive and differential crosssections in the simplified template cross section framework,as well as couplings of the Higgs boson to vector bosons andfermions. The data set collected by the CMS detector during2016–2018 is used, corresponding to an integrated luminos ity of 138 fb−1. The signal strength modifier μ, defined asthe ratio of the observed production rate in a given decaychannel to the standard model expectation, is measured to beμ = 0.95+0.10 −0.09. All results are found to be compatible withthe standard model within the uncertainties.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
CMS PYTHIA 8 colour reconnection tunes based on underlying-event data
, European Physical Journal C: Particles and Fields, Vol: 83, ISSN: 1434-6052New sets of parameter tunes for two of the colourreconnection models, quantum chromodynamics-inspiredand gluon-move, implemented in the PYTHIA 8 event generator, are obtained based on the default CMS PYTHIA 8underlying-event tune, CP5. Measurements sensitive to theunderlying event performed by the CMS experiment atcentre-of-mass energies √s = 7 and 13 TeV, and by theCDF experiment at 1.96 TeV are used to constrain the parameters of colour reconnection models and multiple-partoninteractions simultaneously. The new colour reconnectiontunes are compared with various measurements at 1.96, 7, 8,and 13 TeV including measurements of the underlying-event,strange-particle multiplicities, jet substructure observables,jet shapes, and colour flow in top quark pair (t¯t) events. Thenew tunes are also used to estimate the uncertainty related tocolour reconnection modelling in the top quark mass measurement using the decay products of t¯t events in the semileptonic channel at 13 TeV.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of the differential t(t)over-bar production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
, European Physical Journal C, Vol: 83, ISSN: 1434-6044A measurement of the jet mass distribution inhadronic decays of Lorentz-boosted top quarks is presented.The measurement is performed in the lepton + jets channelof top quark pair production (tt) events, where the leptonis an electron or muon. The products of the hadronic topquark decay are reconstructed using a single large-radius jetwith transverse momentum greater than 400 GeV. The datawere collected with the CMS detector at the LHC in proton-proton collisions and correspond to an integrated luminosityof 138 fb−1. The differential tt production cross section asa function of the jet mass is unfolded to the particle leveland is used to extract the top quark mass. The jet mass scaleis calibrated using the hadronic W boson decay within thelarge-radius jet. The uncertainties in the modelling of thefinal state radiation are reduced by studying angular corre lations in the jet substructure. These developments lead toa significant increase in precision, and a top quark mass of173.06 ± 0.84 GeV.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at √s=13TeV
, European Physical Journal C, Vol: 83, ISSN: 1434-6044A search is reported for pairs of light Higgsbosons (H1) produced in supersymmetric cascade decays infinal states with small missing transverse momentum. A dataset of LHC pp collisions collected with the CMS detectorat √s = 13 TeV and corresponding to an integrated luminosity of 138 fb−1 is used. The search targets events whereboth H1 bosons decay into bb pairs that are reconstructed ¯as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Resultsfrom the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a “singlino” of smallmass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H1and a singlino-like neutralino of small transverse momentum.Upper limits are set on the product of the squark or gluino pairproduction cross section and the square of the bb branching ¯fraction of the H1 in a benchmark model containing almostmass-degenerate gluinos and light-flavour squarks. Under theassumption of an SM-like H1 → bb branching fraction, H ¯ 1bosons with masses in the range 40–120 GeV arising from thedecays of squarks or gluinos with a mass of 1200–2500 GeVare excluded at 95% confidence level.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
A study of <i>CP</i> violation in the decays <i>B</i><SUP>±</SUP> → [<i>K</i><SUP>+</SUP> <i>K</i><SUP>-</SUP> π<SUP>+</SUP>π<SUP>-</SUP>]<sub>D</sub><i>h</i><SUP>±</SUP> (<i>h</i> = <i>K</i>, π) and <i>B</i><SUP>±</SUP> → [π<SUP>+</SUP> π<SUP>-</SUP> π<SUP>+</SUP> π<SUP>-</SUP>]<i><sub>D</sub>h</i>±
, EUROPEAN PHYSICAL JOURNAL C, Vol: 83, ISSN: 1434-6044 -
Journal articleAbud AA, Abi B, Acciarri R, et al., 2023,
Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
, PHYSICAL REVIEW D, Vol: 107, ISSN: 2470-0010 -
Journal articleAbud AA, Abi B, Acciarri R, et al., 2023,
Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment
, PHYSICAL REVIEW D, Vol: 107, ISSN: 2470-0010- Author Web Link
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- Citations: 1
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Measurement of antiproton production from antihyperon decays in <i>p</i>He collisions at √<i>s</i><sub>NN</sub>=110 GeV
, EUROPEAN PHYSICAL JOURNAL C, Vol: 83, ISSN: 1434-6044 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Open charm production and asymmetry in <i>p</i>Ne collisions at √<i>s</i><sub>NN</sub>=68.5 GeV
, EUROPEAN PHYSICAL JOURNAL C, Vol: 83, ISSN: 1434-6044 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for nonresonant Higgs boson pair production in the four leptons plus twob jets final state in proton-proton collisions at √s=13 TeV
, 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., 2023,
Search for CP violation using t (t)over-bar events in the lepton plus jets channel in pp collisions at √s=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Collaboration TCMS, Adam W, et al., 2023,
Observation of electroweak W<SUP>+</SUP>W<SUP>-</SUP> pair production in association with two jets in proton-proton collisions at √s=13 TeV
, PHYSICS LETTERS B, Vol: 841, ISSN: 0370-2693 -
Journal articleRossi R, Esposito LS, Pesaresi M, et al., 2023,
Track reconstruction and analysis of particle interactions in short bent crystals
, JOURNAL OF INSTRUMENTATION, Vol: 18, ISSN: 1748-0221 -
Journal articleAbud AA, Abi B, Acciarri R, et al., 2023,
Identification and reconstruction of low-energy electrons in the ProtoDUNE-SP detector
, PHYSICAL REVIEW D, Vol: 107, ISSN: 2470-0010- Author Web Link
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- Citations: 1
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for heavy resonances and quantum black holes in eμ, eτ, and μτ final states in proton-proton collisions at √<i>s</i>=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for Higgs boson decays to a Z boson and a photon in proton-proton collisions at √s=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for long-lived particles decaying to a pair of muons in proton-proton collisions at √s=13 TeV
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479- Author Web Link
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- Citations: 1
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