Measurements of the total and differential cross sections dσ/dp B T and dσ/dy B for B + mesons pr... more Measurements of the total and differential cross sections dσ/dp B T and dσ/dy B for B + mesons produced in pp collisions at √ s = 7 TeV are presented. The data correspond to an integrated luminosity of 5.8 pb −1 collected by the CMS experiment operating at the LHC. The exclusive decay B + → J/ψ K + , with J/ψ → µ + µ − , is used to detect B + mesons and to measure the production cross section as a function of p B T and y B . The total cross section for p B T > 5 GeV and y B < 2.4 is measured to be 28.1 ± 2.4 ± 2.0 ± 3.1 µb, where the first uncertainty is statistical, the second is systematic, and the last is from the luminosity measurement.
Bose-Einstein correlations between identical particles are measured in samples of proton-proton c... more Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at 0.9 and 7 TeV centre-of-mass energies, recorded by the CMS experiment at the LHC. The signal is observed in the form of an enhancement of number of pairs of same-sign charged particles with small relative momentum. The dependence of this enhancement on kinematic and topological features of the event is studied. Anticorrelations between same-sign charged particles are observed in the region of relative momenta higher than those in the signal region.
Measurements of the total and differential cross sections dσ/dp B T and dσ/dy B for B + mesons pr... more Measurements of the total and differential cross sections dσ/dp B T and dσ/dy B for B + mesons produced in pp collisions at √ s = 7 TeV are presented. The data correspond to an integrated luminosity of 5.8 pb −1 collected by the CMS experiment operating at the LHC. The exclusive decay B + → J/ψ K + , with J/ψ → µ + µ − , is used to detect B + mesons and to measure the production cross section as a function of p B T and y B . The total cross section for p B T > 5 GeV and y B < 2.4 is measured to be 28.1 ± 2.4 ± 2.0 ± 3.1 µb, where the first uncertainty is statistical, the second is systematic, and the last is from the luminosity measurement.
Bose-Einstein correlations between identical particles are measured in samples of proton-proton c... more Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at 0.9 and 7 TeV centre-of-mass energies, recorded by the CMS experiment at the LHC. The signal is observed in the form of an enhancement of number of pairs of same-sign charged particles with small relative momentum. The dependence of this enhancement on kinematic and topological features of the event is studied. Anticorrelations between same-sign charged particles are observed in the region of relative momenta higher than those in the signal region.
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