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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Search for <i>CP</i> violation in the phase space of D<SUP>0</SUP><i>→</i> π<i><SUP>-</SUP></i>π<SUP>+</SUP>π<SUP>0</SUP> decays with the energy test
, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of the Dependence of the Hadron Production Fraction Ratios f_{s}/f_{u} and f_{d}/f_{u} on B Meson Kinematic Variables in Proton-Proton Collisions at sqrt[s]=13 TeV.
, Physical Review Letters, Vol: 131, ISSN: 0031-9007The dependence of the ratio between the π΅0π and π΅+ hadron production fractions, ππ β‘/ππ’, on the transverse momentum (ππ) and rapidity of the π΅ mesons is studied using the decay channels π΅0π →π½/πβ’π and π΅+→π½/πβ’πΎ+. The analysis uses a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 61.6 fb−1. The ππ β‘/ππ’ ratio is observed to depend on the π΅ ππ and to be consistent with becoming asymptotically constant at large ππ. No rapidity dependence is observed. The ratio of the π΅0 to π΅+ meson production fractions, ππβ‘/ππ’, is also measured, for the first time in proton-proton collisions, using the π΅0→π½/πβ’πΎ*0 decay channel. The result is found to be within 1 standard deviation of unity and independent of ππ and rapidity, as expected from isospin invariance.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Measurement of the mass difference and relative production rate of the Ωb- and Ξb- baryons
, PHYSICAL REVIEW D, Vol: 108, ISSN: 2470-0010 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Measurement of the Ratios of Branching Fractions R(D*) and R(D<SUP>0</SUP>)
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for a vector-like quark T′ → tH via the diphoton decay mode of the Higgs boson in proton-proton collisions at √s = 13 TeV
, The Journal of High Energy Physics, Vol: 2023, ISSN: 1029-8479A search for the electroweak production of a vector-like quark T′, decaying to a top quark and a Higgs boson is presented. The search is based on a sample of proton-proton collision events recorded at the LHC at √s = 13 TeV , corresponding to an integrated luminosity of 138 fb−1. This is the first T′ search that exploits the Higgs boson decay to apair of photons. For narrow isospin singlet T′ states with masses up to 1.1 TeV , the excellent diphoton invariant mass resolution of 1–2% results in an increased sensitivity compared to previous searches based on the same production mechanism. The electroweak productionof a T′ quark with mass up to 960 GeV is excluded at 95% confidence level, assuming a coupling strength κT = 0.25 and a relative decay width Γ/MT′ < 5%.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for new heavy resonances decaying to WW, WZ, ZZ, WH, or ZH boson pairs in the all-jets final state in proton-proton collisions at s=13TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 844, ISSN: 0370-2693A search for new heavy resonances decaying to WW, WZ, ZZ, WH, or ZH boson pairs in the all-jetsfinal state is presented. The analysis is based on proton-proton collision data recorded by the CMSdetector in 2016–2018 at a centre-of-mass energy of 13 TeV at the CERN LHC, corresponding to anintegrated luminosity of 138 fb−1 . The search is sensitive to resonances with masses between 1.3 and6 TeV, decaying to bosons that are highly Lorentz-boosted such that each of the bosons forms a singlelarge-radius jet. Machine learning techniques are employed to identify such jets. No significant excessover the estimated standard model background is observed. A maximum local significance of 3.6 standarddeviations, corresponding to a global significance of 2.3 standard deviations, is observed at masses of 2.1and 2.9 TeV. In a heavy vector triplet model, spin-1 Z′ and W′ resonances with masses below 4.8 TeV areexcluded at the 95% confidence level (CL). These limits are the most stringent to date. In a bulk gravitonmodel, spin-2 gravitons and spin-0 radions with masses below 1.4 and 2.7 TeV, respectively, are excludedat 95% CL. Production of heavy resonances through vector boson fusion is constrained with upper crosssection limits at 95% CL as low as 0.1 fb.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Evidence for four-top quark production in proton-proton collisions at √s=13 TeV
, Physics Letters B, Vol: 844, ISSN: 0370-2693The production of four top quarks (ttt¯ t)¯ is studied with LHC proton-proton collision data samplescollected by the CMS experiment at a center-of-mass energy of 13 TeV, and corresponding to integratedluminosities of up to 138 fb−1. Events that have no leptons (all-hadronic), one lepton, or two opposite sign leptons (where lepton refers only to prompt electrons or prompt muons) are considered. This isthe first ttt¯ t measurement ¯ that includes the all-hadronic final state. The observed significance of the ttt¯ t¯signal in these final states of 3.9 standard deviations (1.5 expected) provides evidence for ttt¯ t production, ¯with a measured cross section of 36+12−11 fb. Combined with earlier CMS results in other final states, thesignal significance is 4.0 standard deviations (3.2 expected). The combination returns an observed crosssection of 17 ± 4 (stat) ± 3 (syst) fb, which is consistent with the standard model prediction.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for medium effects using jets from bottom quarks in PbPb collisions at √sNN = 5.02 TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 844, ISSN: 0370-2693The first study of the shapes of jets arising from bottom (b) quarks in heavy ion collisions is presented.Jet shapes are studied using charged hadron constituents as a function of their radial distance from thejet axis. Lead-lead (PbPb) collision data at a nucleon-nucleon center-of-mass energy of √sNN = 5.02 TeVwere recorded by the CMS detector at the LHC, with an integrated luminosity of 1.69 nb−1. Comparedto proton-proton collisions, a redistribution of the energy in b jets to larger distances from the jet axis isobserved in PbPb collisions. This medium-induced redistribution is found to be substantially larger for bjets than for inclusive jets.
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Journal articleTumasyan A, Adam W, Bergauer T, et al., 2023,
Two-particle azimuthal correlations in γp interactions using pPb collisions at √s<sub>NN</sub>=8.16 TeV
, Physics Letters B: Nuclear Physics and Particle Physics, Vol: 844, ISSN: 0370-2693The first measurements of the Fourier coefficients (V n ) of the azimuthal distributions of charged hadrons emitted from photon-proton (γp) interactions are presented. The data are extracted from 68.8 nb−1 of ultra-peripheral proton-lead (pPb) collisions at √sNN = 8.16 TeV using the CMS detector.The high energy lead ions produce a flux of photons that can interact with the oncoming proton. This γpsystem provides a set of unique initial conditions with multiplicity lower than in photon-lead collisionsbut comparable to recent electron-positron and electron-proton data. The V n coefficients are presentedin ranges of event multiplicity and transverse momentum (pT ) and are compared to correspondinghadronic minimum bias pPb results. For a given multiplicity range, the mean pT of charged particlesis smaller in γp than in pPb collisions. For both the γp and pPb samples, V 1 is negative, V 2 is positive,and V 3 consistent with 0. For each multiplicity and pT range, V 2 is larger for γp events. The γp dataare consistent with model predictions that have no collective effects.
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Journal articleAbratenko P, Alterkait O, Andrade Aldana D, et al., 2023,
First Double-Differential Measurement of Kinematic Imbalance in Neutrino Interactions with the MicroBooNE Detector.
, Phys Rev Lett, Vol: 131We report the first measurement of flux-integrated double-differential quasielasticlike neutrino-argon cross sections, which have been made using the Booster Neutrino Beam and the MicroBooNE detector at Fermi National Accelerator Laboratory. The data are presented as a function of kinematic imbalance variables which are sensitive to nuclear ground-state distributions and hadronic reinteraction processes. We find that the measured cross sections in different phase-space regions are sensitive to different nuclear effects. Therefore, they enable the impact of specific nuclear effects on the neutrino-nucleus interaction to be isolated more completely than was possible using previous single-differential cross section measurements. Our results provide precision data to help test and improve neutrino-nucleus interaction models. They further support ongoing neutrino-oscillation studies by establishing phase-space regions where precise reaction modeling has already been achieved.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for new physics in the τ lepton plus missing transverse momentum final state in proton-proton collisions at √s = 13 TeV
, The Journal of High Energy Physics, Vol: 2023, ISSN: 1029-8479A search for physics beyond the standard model (SM) in the final state with a hadronically decaying tau lepton and a neutrino is presented. This analysis is based on data recorded by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to a total integrated luminosity of 138 fb−1. The transverse mass spectrum is analyzed for the presence of new physics. No significant deviation from the SM prediction is observed. Limits are set on the production cross section of a W′ boson decaying into a tau lepton and a neutrino. Lower limits are set on the mass of the sequential SM-like heavy charged vector boson and the mass of a quantum black hole. Upper limits are placed on the couplings of a new boson to the SM fermions. Constraints are put on a nonuniversal gauge interaction model and an effective field theory model. For the first time, upper limits on the cross section of t-channel leptoquark (LQ) exchange are presented. These limits are translated into exclusion limits on the LQ mass and on its coupling in the t-channel. The sensitivity of this analysis extends into the parameter space of LQ models that attempt to explain the anomalies observed in B meson decays. The limits presented for the various interpretations are the most stringent to date. Additionally, a model-independent limit is provided.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Measurement of the Prompt. 22° Nuclear Modification. Factor in p-Pb Collisions at √SNN=8.16 TeV br
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Measurement of differential cross sections for the production of a Z boson in association with jets in proton-proton collisions at √<i>s</i>=13 TeV
, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 108, ISSN: 1550-2368A measurement is presented of the production of π bosons that decay into two electrons or muons in association with jets, in proton-proton collisions at a center-of-mass energy of 13 TeV. The data were recorded by the CMS Collaboration at the LHC with an integrated luminosity of 35.9 fb−1. The differential cross sections are measured as a function of the transverse momentum (πT) of the π boson and the transverse momentum and rapidities of the five jets with largest πT. The jet multiplicity distribution is measured for up to eight jets. The hadronic activity in the events is estimated using the scalar sum of the πT of all the jets. All measurements are unfolded to the stable-particle level and compared with predictions from various Monte Carlo event generators, as well as with expectations at leading and next-to-leading orders in perturbative quantum chromodynamics.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for a charged Higgs boson decaying into a heavy neutral Higgs boson and a W boson in proton-proton collisions at √s = 13 TeV
, The Journal of High Energy Physics, Vol: 2023, ISSN: 1029-8479A search for a charged Higgs boson H± decaying into a heavy neutral Higgs boson H and a W boson is presented. The analysis targets the H decay into a pair of tau leptons with at least one of them decaying hadronically and with an additional electron or muon present in the event. The search is based on proton-proton collision data recorded by the CMS experiment during 2016–2018 at √s = 13 TeV, corresponding to an integrated luminosity of 138 fb−1. The data are consistent with standard model background expectations. Upper limits at 95% confidence level are set on the product of the cross section and branching fraction for an H± in the mass range of 300–700 GeV, assuming an H with a mass of 200 GeV. The observed limits range from 0.085 pb for an H± mass of 300 Ge V to 0.019 pb for a mass of 700 GeV. These are the first limits on H± production in the H± → HW± decay channel at the LHC.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Proton reconstruction with the CMS-TOTEM Precision Proton Spectrometer
, Journal of Instrumentation, Vol: 18, ISSN: 1748-0221The Precision Proton Spectrometer (PPS) of the CMS and TOTEM experiments col-lected 107.7 fb1 in proton-proton (pp) collisions at the LHC at 13 TeV (Run 2). This paper describesthe key features of the PPS alignment and optics calibrations, the proton reconstruction procedure,as well as the detector efficiency and the performance of the PPS simulation. The reconstructionand simulation are validated using a sample of (semi)exclusive dilepton events. The performanceof PPS has proven the feasibility of continuously operating a near-beam proton spectrometer at ahigh luminosity hadron collider.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Model-independent measurement of charm mixing parameters in B<overline><i> →</i> D0(→ K0Sπ+π- )μ-ν<overline>μX decays
, PHYSICAL REVIEW D, Vol: 108, ISSN: 2470-0010 -
Journal articleAbe K, Akhlaq N, Akutsu R, et al., 2023,
Measurements of neutrino oscillation parameters from the T2K experiment using 3.6×10²¹ protons on target
, European Physical Journal C: Particles and Fields, Vol: 83, ISSN: 1124-1861The T2K experiment presents new measurements of neutrino oscillation parameters using 19.7(16.3) ×1020 protons on target (POT) in (anti-)neutrino mode at thefar detector (FD). Compared to the previous analysis, anadditional 4.7 × 1020 POT neutrino data was collected atthe FD. Significant improvements were made to the analysis methodology, with the near-detector analysis introducing new selections and using more than double the data.Additionally, this is the first T2K oscillation analysis to useNA61/SHINE data on a replica of the T2K target to tune theneutrino flux model, and the neutrino interaction model wasimproved to include new nuclear effects and calculations.Frequentist and Bayesian analyses are presented, including results on sin2 θ13 and the impact of priors on the δCP measurement. Both analyses prefer the normal mass orderingand upper octant of sin2 θ23 with a nearly maximally CPviolating phase. Assuming the normal ordering and using theconstraint on sin2 θ13 from reactors, sin2 θ23 = 0.561+0.021 −0.032using Feldman–Cousins corrected intervals, and Δm232 =2.494+0.041−0.058 × 10−3 eV2 using constant Δχ2 intervals. TheCP-violating phase is constrained to δCP = −1.97+0.97 −0.70 usingFeldman–Cousins corrected intervals, and δCP = 0, π isexcluded at more than 90% confidence level. A Jarlskoginvariant of zero is excluded at more than 2σ credible levelusing a flat prior in δCP, and just below 2σ using a flat prior insin δCP. When the external constraint on sin2 θ13 is removed,sin2 θ13 = 28.0+2.8−6.5 × 10−3, in agreement with measurements from reactor experiments. These results are consistentwith previous T2K analyses.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Search for exotic Higgs boson decays H → AA → 4γ with events containing two merged diphotons in proton-proton collisions at Vs=13 TeV
, Physical Review Letters, Vol: 131, ISSN: 0031-9007We present the first direct search for exotic Higgs boson decays π»→ππ, π →πΎβ’πΎ in events with two photonlike objects. The hypothetical particle π is a low-mass spin-0 particle decaying promptly to a merged diphoton reconstructed as a single photonlike object. We analyze the data collected by the CMS experiment at √π =13 TeV corresponding to an integrated luminosity of 136 fb−1. No excess above the estimated background is found. We set upper limits on the branching fraction β¬β‘(π»→πβ’π→4β’πΎ) of (0.9–3.3)×10−3 at 95% confidence level for masses of π in the range 0.1–1.2 GeV.
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Journal articleGolutvin A, Iniukhin A, Mauri A, et al., 2023,
The DL Advocate: playing the devil's advocate with hidden systematic uncertainties
, EUROPEAN PHYSICAL JOURNAL C, Vol: 83, ISSN: 1434-6044 -
Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Search for the rare decays W<SUP>+</SUP> →D<sub>s</sub><SUP>+</SUP>γ and Z → D<SUP>0</SUP> γ at LHCb
, CHINESE PHYSICS C, Vol: 47, ISSN: 1674-1137 -
Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Observation of same-sign WW production from double parton scattering in proton-proton collisions at sqrt[s]=13 TeV.
, Physical Review Letters, Vol: 131, ISSN: 0031-9007The first observation of the production of π±β’π± bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138 fb−1 recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign π bosons decaying leptonically is 80.7±11.2β’(stat)β’ +9.5−8.6β’(syst)±12.1β’(model) fb, whereas the measured fiducial cross section is 6.28±0.81β’(stat)±0.69β’(syst)±0.37β’(model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.
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Journal articleSherrill N, Parsons AO, Baynham CFA, et al., 2023,
Analysis of atomic-clock data to constrain variations of fundamental constants
, NEW JOURNAL OF PHYSICS, Vol: 25, ISSN: 1367-2630 -
Journal articleHayrapetyan A, Tumasyan A, Adam W, et al., 2023,
Observation of the Rare Decay of the η Meson to Four Muons
, Physical Review Letters, Vol: 131, ISSN: 0031-9007A search for the rare π →π+β’π−β’π+β’π− double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb−1. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the π→π+β’π− decay as normalization, the branching fraction β¬β‘(π→π+β’π−β’π+β’π−)=[5.0±0.8β’(stat)±0.7β’(syst)±0.7β’(β¬2β’π)]×10−9 is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
Reconstruction of decays to merged photons using end-to-end deep learning with domain continuation in the CMS detector
, Physical Review D, Vol: 108, ISSN: 2470-0010A novel technique based on machine learning is introduced to reconstruct the decays of highly Lorentz-boosted particles. Using an end-to-end deep learning strategy, the technique bypasses existing rule-based particle reconstruction methods typically used in high energy physics analyses. It uses minimally processed detector data as input and directly outputs particle properties of interest. The new technique is demonstrated for the reconstruction of the invariant mass of particles decaying in the CMS detector. The decay of a hypothetical scalar particle into two photons, , is chosen as a benchmark decay. Lorentz boosts are considered, ranging from regimes where both photons are resolved to those where the photons are closely merged as one object. A training method using domain continuation is introduced, enabling the invariant mass reconstruction of unresolved photon pairs in a novel way. The new technique is validated using decays in LHC collision data.
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Journal articleAbratenko P, Alterkait O, Andrade Aldana D, et al., 2023,
First demonstration of O (1 ns) timing resolution in the MicroBooNE liquid argon time projection chamber
, Physical Review D, Vol: 108, ISSN: 2470-0010MicroBooNE is a neutrino experiment located in the Booster Neutrino Beamline (BNB) at Fermilab, which collected data from 2015 to 2021. MicroBooNE's liquid argon time projection chamber (LArTPC) is accompanied by a photon detection system consisting of 32 photomultiplier tubes used to measure the argon scintillation light and determine the timing of neutrino interactions. Analysis techniques combining light signals and reconstructed tracks are applied to achieve a neutrino interaction time resolution of O(1 ns). The result obtained allows MicroBooNE to access the nanosecond beam structure of the BNB for the first time. The timing resolution achieved will enable significant enhancement of cosmic background rejection for all neutrino analyses. Furthermore, the ns timing resolution opens new avenues to search for long-lived-particles such as heavy neutral leptons in MicroBooNE, as well as in future large LArTPC experiments, namely the SBN program and DUNE.
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Journal articleAbratenko P, Alterkait O, Andrade Aldana D, et al., 2023,
Multidifferential cross section measurements of νμ -argon quasielasticlike reactions with the MicroBooNE detector
, Physical Review D, Vol: 108, ISSN: 2470-0010We report on a flux-integrated multidifferential measurement of charged-current muon neutrino scattering on argon with one muon and one proton in the final state using the Booster Neutrino Beam and MicroBooNE detector at Fermi National Accelerator Laboratory. The data are studied as a function of various kinematic imbalance variables and of a neutrino energy estimator, and are compared to a number of event generator predictions. We find that the measured cross sections in different phase-space regions are sensitive to nuclear effects. Our results provide precision data to test and improve the neutrino-nucleus interaction models needed to perform high-accuracy oscillation analyses. Specific regions of phase space are identified where further model refinements are most needed.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Search for the doubly heavy baryon <i>Ξ</i><sub>bc</sub><SUP>+</SUP> decaying to J/<i>ψΞ</i><sub>c</sub><SUP>+</SUP>
, CHINESE PHYSICS C, Vol: 47, ISSN: 1674-1137 -
Journal articleAraujo HM, Balashov SN, Borg JE, et al., 2023,
The MIGDAL experiment: measuring a rare atomic process to aid the search for dark matter
, Astroparticle Physics, Vol: 151, ISSN: 0927-6505We present the Migdal In Galactic Dark mAtter expLoration (MIGDAL) experiment aiming at the unambiguousobservation and study of the so-called Migdal effect induced by fast-neutron scattering. It is hoped that thiselusive atomic process can be exploited to enhance the reach of direct dark matter search experiments tolower masses, but it is still lacking experimental confirmation. Our goal is to detect the predicted atomicelectron emission which is thought to accompany nuclear scattering with low, but calculable, probability, bydeploying an Optical Time Projection Chamber filled with a low-pressure gas based on CF4. Initially, pureCF4 will be used, and then in mixtures containing other elements employed by leading dark matter searchtechnologies — including noble species, plus Si and Ge. High resolution track images generated by a GasElectron Multiplier stack, together with timing information from scintillation and ionisation readout, will beused for 3D reconstruction of the characteristic event topology expected for this process — an arrangement oftwo tracks sharing a common vertex, with one belonging to a Migdal electron and the other to a nuclear recoil.Different energy-loss rate distributions along both tracks will be used as a powerful discrimination tool againstbackground events. In this article we present the design of the experiment, informed by extensive particle andtrack simulations and detailed estimations of signal and background rates. In pure CF4 we expect to observe8.9 (29.3) Migdal events per calendar day of exposure to an intense D–D (D–T) neutron generator beam at theNILE facility located at the Rutherford Appleton Laboratory (UK). With our nominal assumptions, 5π mediandiscovery significance can be achieved in under one day with either generator.
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Journal articleTumasyan A, Adam W, Andrejkovic JW, et al., 2023,
First measurement of the top quark pair productioncross section in proton-proton collisions at√s = 13.6 TeV
, The Journal of High Energy Physics, Vol: 2023, ISSN: 1029-8479The first measurement of the top quark pair (t¯t) production cross sectionin proton-proton collisions at √s = 13.6 TeV is presented. Data recorded with the CMSdetector at the CERN LHC in Summer 2022, corresponding to an integrated luminosityof 1.21 fb−1, are analyzed. Events are selected with one or two charged leptons (electronsor muons) and additional jets. A maximum likelihood fit is performed in event categoriesdefined by the number and flavors of the leptons, the number of jets, and the number ofjets identified as originating from b quarks. An inclusive t¯t production cross section of881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard modelprediction of 924+32−40 pb.
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Journal articleAaij R, Abdelmotteleb ASW, Beteta CA, et al., 2023,
Measurement of the Branching Fractions B(B<SUP>0</SUP> → <i>p(p)over-barp(p)over-bar</i>) and <i>B</i>(<i>B<sub>s</sub><SUP>0</SUP></i> → <i>p(p)over-barp(p)over-bar</i>)
, PHYSICAL REVIEW LETTERS, Vol: 131, ISSN: 0031-9007
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