Measurement of Ds± production asymmetry in pp collisions at √s=7 and 8 TeV

The LHCb Collaboration

doi:10.1007/JHEP08(2018)008

Measurement of D_s^± production asymmetry in pp collisions at √^s=7 and 8 TeV

The LHCb Collaboration

Research output: Contribution to journal › Article › Research › peer-review

17 Citations (Scopus)

Abstract

The inclusive Ds ± 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 Ds ± mesons are used, which decay as Ds ± → 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 Ds ± production asymmetry is found with a significance of 3.3 standard deviations.

Original language	English
Article number	8
Number of pages	21
Journal	Journal of High Energy Physics
Volume	2018
Issue number	8
DOIs	https://doi.org/10.1007/JHEP08(2018)008
Publication status	Published - 2018
Externally published	Yes

Keywords

Charm physics
Forward physics
Hadron-Hadron scattering (experiments)
Heavy quark production
QCD

Access to Document

10.1007/JHEP08(2018)008

283225673-oaFinal published version, 1.67 MB

Cite this

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title = "Measurement of Ds± production asymmetry in pp collisions at √s=7 and 8 TeV",

abstract = "The inclusive Ds ± 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 Ds ± mesons are used, which decay as Ds ± → 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 Ds ± production asymmetry is found with a significance of 3.3 standard deviations.",

keywords = "Charm physics, Forward physics, Hadron-Hadron scattering (experiments), Heavy quark production, QCD",

author = "Ulrik Egede and Tom Hadavizadeh and \{The LHCb Collaboration\}",

year = "2018",

doi = "10.1007/JHEP08(2018)008",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

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T1 - Measurement of Ds± production asymmetry in pp collisions at √s=7 and 8 TeV

AU - Egede, Ulrik

AU - Hadavizadeh, Tom

AU - The LHCb Collaboration

PY - 2018

Y1 - 2018

N2 - The inclusive Ds ± 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 Ds ± mesons are used, which decay as Ds ± → 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 Ds ± production asymmetry is found with a significance of 3.3 standard deviations.

AB - The inclusive Ds ± 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 Ds ± mesons are used, which decay as Ds ± → 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 Ds ± production asymmetry is found with a significance of 3.3 standard deviations.

KW - Charm physics

KW - Forward physics

KW - Hadron-Hadron scattering (experiments)

KW - Heavy quark production

KW - QCD

U2 - 10.1007/JHEP08(2018)008

DO - 10.1007/JHEP08(2018)008

M3 - Article

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VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

M1 - 8

ER -