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Report number arXiv:1205.0897 ; CERN-PH-EP-2012-114 ; LHCB-PAPER-2012-009 ; CERN-PH-EP-2012-114 ; LHCB-PAPER-2012-009
Title Measurement of the D+sDs production asymmetry in 7 TeV pp collisions
Author(s) LHCb collaboration  顯示全部 607 名作者
Publication 2013-07-16
Imprint 07 May 2012
Number of pages 10
Note Comments: 13 pages, 10 figures
In: Phys. Lett. B 713 (2012) 186-195
DOI 10.1016/j.physletb.2012.06.001
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords flavor physics ; forward physics ; charm physics ; heavy quark production ; experimental results
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 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 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.
Copyright/License preprint: © 2012-2025 CERN (License: CC-BY-3.0)
publication: © 2012-2025 CERN (License: Open Access)



Corresponding record in: Inspire


 記錄創建於2012-05-07,最後更新在2024-08-17


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