Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A(P), between D-s(+) and D-s(-) mesons is studied using the phi pi(+/-) decay mode in a data sample of 1.0 fb(-1) collected with the LHCb detector. The difference between pi(+) and pi(-) detection efficiencies is determined using the ratios of fully reconstructed to partially reconstructed D*(+/-) decays. The overall production asymmetry in the D-s(+/-) rapidity region 2.0 to 4.5 with transverse momentum larger than 2 GeV is measured to be A(P) = (-0.33 +/- 0.22 +/- 0.10)%. This result can constrain models of heavy flavour production. (C) 2012 CERN. Published by Elsevier By. All rights reserved.

Measurement of the D-s(+)-D-s(-) production asymmetry in 7 TeV pp collisions / 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., A. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 713:3(2012), pp. 186-195. [10.1016/j.physletb.2012.06.001]

Measurement of the D-s(+)-D-s(-) production asymmetry in 7 TeV pp collisions

SARTI, ALESSIO;SCIUBBA, Adalberto;
2012

Abstract

Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A(P), between D-s(+) and D-s(-) mesons is studied using the phi pi(+/-) decay mode in a data sample of 1.0 fb(-1) collected with the LHCb detector. The difference between pi(+) and pi(-) detection efficiencies is determined using the ratios of fully reconstructed to partially reconstructed D*(+/-) decays. The overall production asymmetry in the D-s(+/-) rapidity region 2.0 to 4.5 with transverse momentum larger than 2 GeV is measured to be A(P) = (-0.33 +/- 0.22 +/- 0.10)%. This result can constrain models of heavy flavour production. (C) 2012 CERN. Published by Elsevier By. All rights reserved.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the D-s(+)-D-s(-) production asymmetry in 7 TeV pp collisions / 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., A. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 713:3(2012), pp. 186-195. [10.1016/j.physletb.2012.06.001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/493833
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