The production cross-sections of B mesons are measured in pp collisions at a centre-of-mass energy of 7 TeV, using data collected with the LHCb detector corresponding to a integrated luminosity of 0.36 fb(−1). The B (+), B (0) and mesons are reconstructed in the exclusive decays B (+) → J/ψK (+), B (0) → J/ψK (*0) and , with J/ψ → μ (+) μ (−), K (*0) → K (+)π(−) and ϕ → K (+) K ( )−( ). The differential cross-sections are measured as functions of B meson transverse momentum p (T) and rapidity y, in the range 0 < p (T) < 40 GeV/c and 2.0 < y < 4.5. The integrated cross-sections in the same p (T) and y ranges, including charge-conjugate states, are measured to be where the third uncertainty arises from the pre-existing branching fraction measurements.
Measurement of B meson production cross-sections in proton-proton collisions at $ \sqrt{s}=7 $ TeV
BALDINI, Wander;BOZZI, Concezio;FIORE, Marco;SAVRIE', Mauro;
2013
Abstract
The production cross-sections of B mesons are measured in pp collisions at a centre-of-mass energy of 7 TeV, using data collected with the LHCb detector corresponding to a integrated luminosity of 0.36 fb(−1). The B (+), B (0) and mesons are reconstructed in the exclusive decays B (+) → J/ψK (+), B (0) → J/ψK (*0) and , with J/ψ → μ (+) μ (−), K (*0) → K (+)π(−) and ϕ → K (+) K ( )−( ). The differential cross-sections are measured as functions of B meson transverse momentum p (T) and rapidity y, in the range 0 < p (T) < 40 GeV/c and 2.0 < y < 4.5. The integrated cross-sections in the same p (T) and y ranges, including charge-conjugate states, are measured to be where the third uncertainty arises from the pre-existing branching fraction measurements.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.