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Journal Article

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

MPS-Authors
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Popov,  D.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Schmelling,  M.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Zavertiaev,  M.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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1805.09869.pdf
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Citation

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albicocco, P., et al. (2018). Measurement of D±s production asymmetry in pp collisions at √s =7 and 8 TeV. Journal of high energy physics: JHEP, 2018: 008. doi:10.1007/JHEP08(2018)008.


Cite as: https://hdl.handle.net/21.11116/0000-0005-79B5-7
Abstract
The inclusive $D_s^{\pm}$ 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 $D_s^{\pm}$ mesons are used, which decay as
$D_s^{\pm}\to\phi\pi^{\pm}$, with $\phi\to K^+K^-$. The measurement is
performed in bins of transverse momentum, $p_{\rm T}$, and rapidity, $y$,
covering the range $2.5<p_{\rm T}<25.0$ GeV$/c$ and $2.0<y<4.5$. No kinematic
dependence is observed. Evidence of nonzero $D_s^{\pm}$ production asymmetry is
found with a significance of 3.3 standard deviations.