Browsing Natural and Mathematical Sciences by Subject "Heavy ions"
Now showing items 1-9 of 9
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Evidence for light-by-light scattering in ultraperipheral PbPb collisions at √sNN = 5.02 TeV
(Elsevier, 2019-02)Evidence for light-by-light (LbL) scattering, gamma gamma -> gamma gamma, in ultraperipheral PbPb collisions at a nucleon-nucleon center of-mass energy of 5.02 TeV is reported. LbL scattering processes are selected in ... -
Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at 2.76 TeV
(Springer International Publishing, 2016-01)An analysis of dijet events in PbPb and pp collisions is performed to explore the properties of energy loss by partons traveling in a quark-gluon plasma. Data are collected at a nucleon-nucleon center-of-mass energy of ... -
Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at √sNN = 5.02 TeV
(Elsevier, 2017-09-10)The CMS Collaboration presents the first measurement of the differential cross section of jets from charm quarks produced in proton–lead (pPb) collisions at a nucleon–nucleon center-of-mass energy of sNN=5.02TeV, as well ... -
Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions
(Elsevier, 2013-07-23)Measurements of two- and four-particle angular correlations for charged particles emitted in pPb collisions are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated ... -
Observation of long-range, near-side angular correlations in pPb collisions at the LHC
(Elsevier, 2013-01-08)Results on two-particle angular correlations for charged particles emitted in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV are presented. The analysis uses two million collisions collected with the ... -
Observation of nuclear modifications in W±boson production in pPb collisions at √sNN=8.16 TeV
(Elsevier, 2020-01-10)The production of W-+/- bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of root s(NN) = 8.16 TeV. Measurements are performed in the W-+/- -> mu(+/-)nu(mu) channel using a data ... -
Study of Z boson production in pPb collisions at √sNN=5.02 TeV
(Elsevier, 2016-08-10)The production of Z bosons in pPb collisions at View the MathML source is studied by the CMS experiment via the electron and muon decay channels. The inclusive cross section is compared to pp collision predictions, and ... -
Suppression of ϒ(1S), ϒ(2S), and ϒ(3S) quarkonium states in PbPb collisions at √sNN = 2.76 TeV
(Elsevier, 2017)The production yields of ϒ(1S), ϒ(2S), and ϒ(3S) quarkonium states are measured through their decays into muon pairs in the CMS detector, in PbPb and pp collisions at the centre-of-mass energy per nucleon pair of 2.76 ... -
Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV
(Elsevier, 2016-03-10)We present a measurement of b jet transverse momentum (pT) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb−1 collected with the CMS detector at the LHC. Jets from b quark fragmentation ...
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