# Measurement of $D_s^{\pm}$ production asymmetry in $pp$ collisions at $\sqrt{s} =7$ 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 $\sqrt{s}=7$ 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.
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Article dans une revue
JHEP, 2018, 08, pp.008. 〈10.1007/JHEP08(2018)008〉

https://hal.archives-ouvertes.fr/hal-01815155
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Soumis le : mercredi 13 juin 2018 - 18:56:52
Dernière modification le : mardi 12 février 2019 - 21:52:43

### Citation

Roel Aaij, Bernardo Adeva, Marco Adinolfi, Ziad Ajaltouni, Simon Akar, et al.. Measurement of $D_s^{\pm}$ production asymmetry in $pp$ collisions at $\sqrt{s} =7$ and 8 TeV. JHEP, 2018, 08, pp.008. 〈10.1007/JHEP08(2018)008〉. 〈hal-01815155〉

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