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

LHCb Collaboration

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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 languageEnglish
Article number8
JournalJournal of High Energy Physics
Publication statusPublished - 2 Aug 2018

Bibliographical note

The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 8.


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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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