Browsing Natural and Mathematical Sciences by Issue Date
Now showing items 561-580 of 1083
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Constraints on models of scalar and vector leptoquarks decaying to a quark and a neutrino at √s = 13 TeV
(American Physical Society, 2018-08-10)The results of a previous search by the CMS Collaboration for squarks and gluinos are reinterpreted to constrain models of leptoquark (LQ) production. The search considers jets in association with a transverse momentum ... -
Elliptic flow of charm and strange hadrons in high-multiplicity p+Pb collisions at sNN =8.16 TeV
(American Physical Society, 2018-08-21)The elliptic azimuthal anisotropy coefficient (v2) is measured for charm (D0) and strange (KS0, Λ, Ξ-, and Ω-) hadrons, using a data sample of p+Pb collisions collected by the CMS experiment, at a nucleon-nucleon center-of-mass ... -
Observation of the χb1 (3P) and χb2 (3P) and measurement of their masses
(American Physical Society, 2018-08-29)The χb1(3P) and χb2(3P) states are observed through their (3S)γ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy ... -
Measurement of charged particle spectra in minimum-bias events from proton–proton collisions at √s=13TeV
(Springer Nature, 2018-08-31)Pseudorapidity, transverse momentum, and multiplicity distributions are measured in the pseudorapidity range | η| < 2.4 for charged particles with transverse momenta satisfying pT>0.5GeV in proton–proton collisions at a ... -
Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in p p collisions at 8 TeV
(Springer Nature, 2018-09)A measurement is presented of the effective leptonic weak mixing angle (sin2θeffℓ) using the forward–backward asymmetry of Drell–Yan lepton pairs (μμ and e e) produced in proton–proton collisions at s=8TeV at the CMS ... -
Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV
(Springer Nature, 2018-09)A search for the pair production of the lightest supersymmetric partner of the top quark ((t) over tilde (1)) is presented. The search focuses on a compressed scenario where the mass difference between the top squark and ... -
Search for dark matter produced in association with a Higgs boson decaying to γγ or τ + τ − at √s=13 TeV
(Springer Nature, 2018-09)A search for dark matter particles is performed by looking for events with large transverse momentum imbalance and a recoiling Higgs boson decaying to either a pair of photons or a pair of τ leptons. The search is based ... -
Convergence of a semi-discrete numerical method for a class of nonlocal nonlinear wave equations
(EDP Sciences, 2018-09-13)In this article, we prove the convergence of a semi-discrete numerical method applied to a general class of nonlocal nonlinear wave equations where the nonlocality is introduced through the convolution operator in space. ... -
Observation of higgs boson decay to bottom quarks
(American Physical Society, 2018-09-17)The observation of the standard model (SM) Higgs boson decay to a pair of bottom quarks is presented. The main contribution to this result is from processes in which Higgs bosons arc produced in association with a W or Z ... -
Measurement of the groomed jet mass in PbPb and pp collisions at √sNN=5.02 TeV
(Springer Nature, 2018-10)A measurement of the groomed jet mass in PbPb and pp collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV with the CMS detector at the LHC is presented. Jet grooming is a recursive procedure which sequentially ... -
Performance of reconstruction and identification of τ leptons decaying to hadrons and vτ in pp collisions at √s=13 TeV
(IOP Publishing, 2018-10)The algorithm developed by the CMS Collaboration to reconstruct and identify tau leptons produced in proton-proton collisions at root s = 7 and 8 TeV, via their decays to hadrons and a neutrino, has been significantly ... -
Charged-particle nuclear modification factors in XeXe collisions at √sNN=5.44 TeV
(Springer Nature, 2018-10)The differential yields of charged particles having pseudorapidity within vertical bar eta vertical bar < 1 are measured using xenon-xenon (XeXe) collisions at root S-NN = 5.44 TeV. The data, corresponding to an integrated ... -
Search for physics beyond the standard model in high-mass diphoton events from proton-proton collisions at √s = 13 TeV
(American Physical Society, 2018-10-01)A search for physics beyond the standard model is performed using a sample of high-mass diphoton events produced in proton-proton collisions at s=13 TeV. The data sample was collected in 2016 with the CMS detector at the ... -
Observation of the Z → ψ ℓ + ℓ − decay in pp collisions at √s = 13 TeV
(American Physical Society, 2018-10-04)This Letter presents the observation of the rare Z boson decay Z→ψ + -. Here, ψ represents contributions from direct J/ψ and ψ(2S)→J/ψX, + - is a pair of electrons or muons, and the J/ψ meson is detected via its decay to ... -
Search for pair-produced resonances each decaying into at least four quarks in proton-proton collisions at √s = 13 TeV
(American Physical Society, 2018-10-05)This Letter presents the results of a search for pair-produced particles of masses above 100 GeV that each decay into at least four quarks. Using data collected by the CMS experiment at the LHC in 2015-2016, corresponding ... -
Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at √s=13 TeV
(Elsevier, 2018-10-10)A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models ... -
Precision measurement of the structure of the CMS inner tracking system using nuclear interactions
(IOP Publishing, 2018-10-29)The structure of the CMS inner tracking system has been studied using nuclear interactions of hadrons striking its material. Data from proton-proton collisions at a center-of-mass energy of 13 TeV recorded in 2015 at the ... -
Search for supersymmetry in events with a τ lepton pair and missing transverse momentum in proton-proton collisions at s√=13 TeV
(Springer Nature, 2018-11)A search for the electroweak production of supersymmetric particles in proton-proton collisions at a center-of-mass energy of 13 TeV is presented in final states with a τ lepton pair. Both hadronic and leptonic decay modes ... -
Search for a charged Higgs boson decaying to charm and bottom quarks in proton-proton collisions at s√=8 TeV
(Springer Nature, 2018-11)A search for charged Higgs boson decaying to a charm and a bottom quark (H +→ c b ¯) is performed using 19.7 fb−1 of pp collision data at s=8 TeV. The production mechanism investigated in this search is t t ¯ pair production ... -
Search for the decay of a Higgs boson in the ℓℓγ channel in proton-proton collisions at s√=13 TeV
(Springer Nature, 2018-11)A search for a Higgs boson decaying into a pair of electrons or muons and a photon is described. Higgs boson decays to a Z boson and a photon (H → Zγ → ℓℓγ, ℓ = e or μ), or to two photons, one of which has an internal ...
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