Search
Results
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Search for ZZ and ZH production in the bbbb final state using proton-proton collisions at √s = 13 TeV
(2024)The European Physical Journal CA search for ZZ and ZH production in the bb¯bb¯ final state is presented, where H is the standard model (SM) Higgs boson. The search uses an event sample of proton-proton collisions corresponding to an integrated luminosity of 133fb-1 collected at a center-of-mass energy of 13TeV with the CMS detector at the CERN LHC. The analysis introduces several novel techniques for deriving and validating a multi-dimensional background model based ...Journal Article -
Search for Scalar Leptoquarks Produced via τ -Lepton–Quark Scattering in pp Collisions at √s = 13 TeV
(2024)Physical Review LettersThe first search for scalar leptoquarks produced in τ-lepton–quark collisions is presented. It is based on a set of proton-proton collision data recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 138 fb⁻¹. The reconstructed final state consists of a jet, significant missing transverse momentum, and a τ lepton reconstructed through its hadronic or leptonic decays. ...Journal Article -
Measurement of the τ lepton polarization in Z boson decays in proton-proton collisions at √s = 13 TeV
(2024)Journal of High Energy PhysicsJournal Article -
Probing small Bjorken-x nuclear gluonic structure via coherent J/ψ photoproduction in ultraperipheral Pb-Pb collisions at √sNN = 5.02 TeV
(2023)Physical Review LettersJournal Article -
Search for direct production of GeV-scale resonances decaying to a pair of muons in proton-proton collisions √s = 13 TeV
(2023)Journal of High Energy PhysicsA search for direct production of low-mass dimuon resonances is performed using √s = 13 TeV proton-proton collision data collected by the CMS experiment during the 2017–2018 operation of the CERN LHC with an integrated luminosity of 96.6 fb−1. The search exploits a dedicated high-rate trigger stream that records events with two muons with transverse momenta as low as 3 GeV but does not include the full event information. The search is ...Journal Article -
Observation of four top quark production in proton-proton collisions at √s=13TeV
(2023)Physics Letters BJournal Article -
Search for Z′ bosons decaying to pairs of heavy Majorana neutrinos in proton-proton collisions at √s = 13 TeV
(2023)Journal of High Energy PhysicsJournal Article -
First measurement of the forward rapidity gap distribution in pPb collisions at √sNN = 8.16 TeV
(2023)Physical Review DFor 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 ...Journal Article -
Performance of the local reconstruction algorithms for the CMS hadron calorimeter with Run 2 data
(2023)Journal of InstrumentationA 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 ...Journal Article -
Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at √sNN = 5.02 TeV
(2023)Journal of High Energy PhysicsThe 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 as prompt 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 ...Journal Article