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

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, p_T, and rapidity, y, covering the range 2.5 < p_T< 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.[Figure not available: see fulltext.].

Original language	English
Article number	8
Journal	Journal of High Energy Physics
Volume	2018
Issue number	8
DOIs	https://doi.org/10.1007/JHEP08(2018)008
Publication status	Published - 1 Aug 2018

Keywords

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

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP08(2018)008

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The LHCb Collaboration (2018). Measurement of D_s ^± production asymmetry in pp collisions at √s=7 and 8 TeV. Journal of High Energy Physics, 2018(8), [8]. https://doi.org/10.1007/JHEP08(2018)008

@article{d8643c833f924064a2f3fcfc1513be7c,

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.[Figure not available: see fulltext.].",

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

author = "{The LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and G. Auriemma and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and V. Battista and A. Bay and J. Beddow and F. Bedeschi and A. Mazurov and A. Petrov and S. Strokov and A. Vagner",

year = "2018",

month = aug,

day = "1",

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

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

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

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Beddow, J.

AU - Bedeschi, F.

AU - Mazurov, A.

AU - Petrov, A.

AU - Strokov, S.

AU - Vagner, A.

PY - 2018/8/1

Y1 - 2018/8/1

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.[Figure not available: see fulltext.].

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.[Figure not available: see fulltext.].

KW - Charm physics

KW - Forward physics

KW - Hadron-Hadron scattering (experiments)

KW - Heavy quark production

KW - QCD

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U2 - 10.1007/JHEP08(2018)008

DO - 10.1007/JHEP08(2018)008

M3 - Article

AN - SCOPUS:85051220284

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 8

M1 - 8

ER -