Measurement of <i>D_s</i><SUP>±</SUP> production asymmetry in <i>pp</i> collisions at √<i>s</i>=7 and 8 TeV

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Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A et al (show 779 more authors) , Ali, S, Alkhazov, G, Cartelle, P Alvarez, Alves, AA Jr, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d'Argent, P, Romeu, J Arnau, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Auriemma, G, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barsuk, S, Barter, W, Baryshnikov, F, Batozskaya, V, Battista, V, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, van Beuzekom, M, Bershyiko, Ia, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjorn, M, Blake, T, Blanc, F, Blusk, S, Bocci, V, Boente Garcia, O, 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JOURNAL OF HIGH ENERGY PHYSICS, 08 (8). 008-.

Text 1805.09869v2.pdf - Author Accepted Manuscript Download (1MB)

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.

Item Type:	Article
Additional Information:	All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2018-010.html
Uncontrolled Keywords:	Charm physics, Forward physics, Hadron-Hadron scattering (experiments), Heavy quark production, QCD
Depositing User:	Symplectic Admin
Date Deposited:	03 Dec 2018 10:32
Last Modified:	07 Oct 2023 00:21
DOI:	10.1007/JHEP08(2018)008
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3029295