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<y<4.5) = 1419 +/- 12 (stat) +/- 116 (syst) +/- 65 (frag) mu b. where the uncertainties are statistical, systematic, and due to the fragmentation functions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

Prompt charm production in pp collisions at root s=7 TeV / R., A., C. A., B., A., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., Y., A., L., A., J., A., R., A., et al.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 871:1(2013), pp. 1-20. [10.1016/j.nuclphysb.2013.02.010]

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

SARTI, ALESSIO;SCIUBBA, Adalberto;
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
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Prompt charm production in pp collisions at root s=7 TeV / R., A., C. A., B., A., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., Y., A., L., A., J., A., R., A., et al.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 871:1(2013), pp. 1-20. [10.1016/j.nuclphysb.2013.02.010]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/560355
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