Charm production at the LHC in pp collisions at root s = 7 TeV is studied with the LHCb detector. The decays D-0 -> K-pi(+), D+ -> K-pi(+)pi(+), D*(+) -> D-0(K-pi(+))pi(+), D-s(+) -> phi(K-K+)pi(+), Lambda(+)(c) -> pK(-)pi(+), and their charge conjugates are analysed in a data set corresponding to an integrated luminosity of 15 nb(-1). Differential cross-sections d sigma/dp(T) are measured for prompt production of the five charmed hadron species in bins of transverse momentum and rapidity in the region 0 < p(T) < 8 GeV/c and 2.0 < y < 4.5. Theoretical predictions are compared to the measured differential cross-sections. The integrated cross-sections of the charm hadrons are computed in the above p(T)-y range, and their ratios are reported. A combination of the five integrated cross-section measurements gives sigma(c (c) over bar)(pT<8 GeV/c, 2.0

Prompt charm production in pp collisions at root s=7 TeV

VELTRI, MICHELE;
2013

Abstract

Charm production at the LHC in pp collisions at root s = 7 TeV is studied with the LHCb detector. The decays D-0 -> K-pi(+), D+ -> K-pi(+)pi(+), D*(+) -> D-0(K-pi(+))pi(+), D-s(+) -> phi(K-K+)pi(+), Lambda(+)(c) -> pK(-)pi(+), and their charge conjugates are analysed in a data set corresponding to an integrated luminosity of 15 nb(-1). Differential cross-sections d sigma/dp(T) are measured for prompt production of the five charmed hadron species in bins of transverse momentum and rapidity in the region 0 < p(T) < 8 GeV/c and 2.0 < y < 4.5. Theoretical predictions are compared to the measured differential cross-sections. The integrated cross-sections of the charm hadrons are computed in the above p(T)-y range, and their ratios are reported. A combination of the five integrated cross-section measurements gives sigma(c (c) over bar)(pT<8 GeV/c, 2.0
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2591465
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