Browsing Natural and Mathematical Sciences by Issue Date
Now showing items 761-780 of 1083
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Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at s√=13 TeV
(Springer Nature, 2020-03-02)The standard model (SM) production of four top quarks (tt over bar tt over ba in proton-proton collisions is studied by the CMS Collaboration. The data sample, collected during the 2016-2018 data taking of the LHC, corresponds ... -
Bose-Einstein correlations of charged hadrons in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-03)Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at <mml:msqrt>s</mml:msqrt> = 13 ... -
Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-04)A search for dark matter (DM) particles is performed using events with a Higgs boson candidate and large missing transverse momentum. The analysis is based on proton- proton collision data at a center-of-mass energy of 13 ... -
Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-06)A search for a heavy Higgs boson in the mass range from 0.2 to 3.0 TeV, decaying to a pair of W bosons, is presented. The analysis is based on proton-proton collisions at = 13 TeV recorded by the CMS experiment at the LHC ... -
Search for physics beyond the standard model in multilepton final states in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-10)A search for physics beyond the standard model in events with at least three charged leptons (electrons or muons) is presented. The data sample corresponds to an integrated luminosity of 137 fb(-1) of proton-proton collisions ... -
Measurement of top quark pair production in association with a Z boson in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-10)A measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds ... -
Search for new neutral Higgs bosons through the H→ZA→ℓ+ℓ−bb¯¯¯ process in pp collisions at s√ = 13 TeV
(Springer Nature, 2020-03-10)This paper reports on a search for an extension to the scalar sector of the standard model, where a new CP-even (odd) boson decays to a Z boson and a lighter CP-odd (even) boson, and the latter further decays to a b quark ... -
Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at √s=13 TeV
(Elsevier, 2020-03-10)The observation of the Lambda(0)(b) -> J/psi Lambda phi decay is reported using proton-proton collision data collected at root s = 13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity ... -
Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at s√ = 13 TeV
(Springer Nature, 2020-03-11)A search is performed for a pseudoscalar Higgs boson, A, decaying into a 125 GeV Higgs boson h and a Z boson. The h boson is specifically targeted in its decay into a pair of tau leptons, while the Z boson decays into a ... -
A multi-dimensional search for new heavy resonances decaying to boosted W W , W Z , or Z Z boson pairs in the dijet final state at 13 TeV
(Springer Nature, 2020-03-12)A search in an all-jet final state for new massive resonances decaying to WW, WZ, or ZZ boson pairs using a novel analysis method is presented. The analysis is performed on data corresponding to an integrated luminosity ... -
Search for lepton flavour violating decays of a neutral heavy Higgs boson to μτ and eτ in proton-proton collisions at s√ = 13 TeV
(Springer Nature, 2020-03-18)A search for lepton flavour violating decays of a neutral non-standard-model Higgs boson in the mu tau and e tau decay modes is presented. The search is based on proton-proton collisions at a center of mass energy root s ... -
A search for the standard model Higgs boson decaying to charm quarks
(Springer Nature, 2020-03-24)A direct search for the standard model Higgs boson, H, produced in association with a vector boson, V (W or Z), and decaying to a charm quark pair is presented. The search uses a data set of proton-proton collisions ... -
Search for supersymmetry in pp collisions at s=13 TeV with 137 fb−1 in final states with a single lepton using the sum of masses of large-radius jets
(American Physical Society, 2020-03-25)Results are reported from a search for new physics beyond the standard model in proton-proton collisions in final states with a single lepton; multiple jets, including at least one jet tagged as originating from the ... -
Experimental study of different silicon sensor options for the upgrade of the CMS Outer Tracker
(IOP Publishing, 2020-04)During the high-luminosity phase of the LHC (HL-LHC), planned to start in 2027, the accelerator is expected to deliver an instantaneous peak luminosity of up to 7.5 x 10(34) cm(-2) s(-1). A total integrated luminosity of ... -
Search for a narrow resonance lighter than 200 GeV decaying to a pair of muons in proton-proton collisions at √ s = 13 TeV
(American Physical Society, 2020-04-03)A search is presented for a narrow resonance decaying to a pair of oppositely charged muons using root s = 13 TeV proton-proton collision data recorded at the LHC. In the 45-75 and 110-200 GeV resonance mass ranges, the ... -
Running of the top quark mass from proton-proton collisions at √s=13 TeV
(Elsevier, 2020-04-10)The running of the top quark mass is experimentally investigated for the first time. The mass of the top quark in the modified minimal subtraction ((MS) over bar) renormalization scheme is extracted from a comparison of ... -
Production of Λc + baryons in proton-proton and lead-lead collisions at √sNN=5.02 TeV
(Elsevier, 2020-04-10)The transverse momentum (P-T) spectra of inclusively produced A c P baryons are measured via the exclusive decay channel Lambda(+)(c) -> pK(-)pi(+) using the CMS detector at the LHC. Spectra are measured as a function of ... -
Study of excited Λ0b states decaying to Λ0bπ+π−in proton-proton collisions at √s=13 TeV
(Elsevier, 2020-04-10)A study of excited Lambda(0)(b) baryons is reported, based on a data sample collected in 2016-2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an ... -
Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at √s=13 TeV
(Elsevier, 2020-04-10)A measurement of the production cross section of top quark pairs in association with two b jets (t (t) over barb (b) over bar) is presented using data collected in proton-proton collisions at root s=13 TeV by the CMS ... -
Constraints on the χ c1 versus χ c2 polarizations in proton-proton collisions at √s = 8 TeV
(American Physical Society, 2020-04-24)The polarizations of promptly produced chi(c1) and chi(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at root s = 8 TeV. The chi(c) states are reconstructed via ...
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