Measurement of differential J/ψ production cross-sections and forward-backward ratio in p+Pb collisions with the ATLAS detector

ATLAS, Collaboration; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Kabana, Sonja; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania; Weber, Michael (2015). Measurement of differential J/ψ production cross-sections and forward-backward ratio in p+Pb collisions with the ATLAS detector. Physical review. C - nuclear physics, C92(3), 034904. American Institute of Physics 10.1103/PhysRevC.92.034904

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Measurements of differential cross-sections for J/ψ production in p+Pb collisions at √sNN = 5.02 TeV at the LHC with the ATLAS detector are presented. The data set used corresponds to an integrated luminosity of 28.1 nb⁻¹. The J/ψ mesons are reconstructed in the dimuon decay channel over the transverse momentum range 8<p T <30 GeV and over the center-of-mass rapidity range −2.87<y ∗ <1.94 . Prompt J/ψ are separated from J/ψ resulting from b -hadron decays through an analysis of the distance between the J/ψ decay vertex and the event primary vertex. The differential cross-section for production of nonprompt J/ψ is compared to a FONLL calculation that does not include nuclear effects. Forward-backward production ratios are presented and compared to theoretical predictions. These results constrain the kinematic dependence of nuclear modifications of charmonium and b -quark production in p+Pb collisions.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

0556-2813

Publisher:

American Institute of Physics

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

08 Sep 2016 10:09

Last Modified:

11 Sep 2016 02:10

Publisher DOI:

10.1103/PhysRevC.92.034904

ArXiv ID:

1505.08141

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt

BORIS DOI:

10.7892/boris.87623

URI:

https://boris.unibe.ch/id/eprint/87623

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