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 Ds+ and Ds- 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 symmetry in the Ds+- 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.

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. - STAMPA. - 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

BIZZETI, Andrea;
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 Ds+ and Ds- 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 symmetry in the Ds+- 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.
2012
713
3
186
195
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. - STAMPA. - 713:3(2012), pp. 186-195. [10.1016/j.physletb.2012.06.001]
R., Aaij; C., Abellan Beteta; A., Adametz; B., Adeva; M., Adinolfi; C., Adrover; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/745994
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