Measurement of $D{_s}{^\pm}$ production asymmetry in pp collisions at $\sqrt s$ = 7 and 8 TeV

LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al

doi:10.1007/JHEP08(2018)008

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Measurement of $D{_s}{^\pm}$ production asymmetry in pp collisions at $\sqrt s$ = 7 and 8 TeV

LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2018). Measurement of $D{_s}{^\pm}$ production asymmetry in pp collisions at $\sqrt s$ = 7 and 8 TeV. Journal of High Energy Physics, 08:008.

Abstract

The inclusive D s ± production asymmetry is measured in pp collisions collected by the LHCb experiment at centre-of-mass energies of s√=7 and 8 TeV. Promptly produced D s ± mesons are used, which decay as D s ± → ϕπ±, with ϕ → K+K−. The measurement is performed in bins of transverse momentum, pT, and rapidity, y, covering the range 2.5 < pT < 25.0 GeV/c and 2.0 < y < 4.5. No kinematic dependence is observed. Evidence of nonzero D s ± production asymmetry is found with a significance of 3.3 standard deviations.

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Item Type:	Journal Article, refereed, original work
Communities & Collections:	07 Faculty of Science > Physics Institute
Dewey Decimal Classification:	530 Physics
Language:	English
Date:	2018
Deposited On:	06 Mar 2019 16:18
Last Modified:	06 Mar 2019 16:51
Publisher:	Springer
ISSN:	1029-8479
OA Status:	Gold
Free access at:	Publisher DOI. An embargo period may apply.
Publisher DOI:	https://doi.org/10.1007/JHEP08(2018)008