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

Science Park 105
Universidade de Santiago de Compostela
University of Bristol
Clermont-Auvergne University
University of Cincinnati
LNF-INFN
Fakultät Physik
University of Dortmund
European Organization for Nuclear Research
SUPA
University of Glasgow
University of Barcelona
Petersburg Nuclear Physics Institute (PNPI)
Imperial College London
Instituto de Biofisica da UFRJ
INFN
Laboratoire de l'Accélérateur Linéaire
Center for High Energy Physics
Tsinghua University
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
Institute of Physics
ENAC-IIC-GEL
Sezione INFN di Ferrara
University of Ferrara
University of Maryland, College Park
School of Physics and Astronomy
University of Manchester
University of Heidelberg
Aix Marseille Université
Kurchatov Institute
Syracuse University
Physik-Institut
University of Zurich
Sezione di Roma
Department of Physics
University of Warwick
Yandex School of Data Analysis
Institute for Theoretical and Experimental Physics
National Centre for Nuclear Research (NCBJ)
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Centro Brasileiro de Pesquisas Fisicas

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

18 Citations (Scopus)

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

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10.1007/JHEP08(2018)008

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@article{8a3cd464e7c349dca782152fe1d44cad,

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 I. Bediaga and A. Beiter and F. Fleuret and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2018, The Author(s).",

year = "2018",

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

language = "English",

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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 - Bediaga, I.

AU - Beiter, A.

AU - Fleuret, F.

AU - Maurice, E.

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

U2 - 10.1007/JHEP08(2018)008

DO - 10.1007/JHEP08(2018)008

M3 - Article

AN - SCOPUS:85051220284

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

M1 - 8

ER -

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

Abstract

Keywords

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