Measurement of D[subscript s]± production asymmetry in pp collisions at √s = 7 and 8 TeV
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13130_2018_Article_8730.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albicocco, P.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Date Issued
August 2018
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Aaij, R. et al. "Measurement of D[subscript s]± production asymmetry in pp collisions at √s = 7 and 8 TeV." Journal of High Energy Physics 2018 (August 2018): 8 © 2018 The Author(s)
Version
Final published version
Abstract
The inclusive D[subscript 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 Ds± mesons are used, which decay as D[subscript s]±→ 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[superscript ±] production asymmetry is found with a significance of 3.3 standard deviations.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP08(2018)008
