Prompt and non-prompt J/Ïˆ production in pp collisions at âˆšs=7 TeV

Vardan Khachatryan; Matthias Weber; Pierluigi Bortignon; Lea Caminada; Zhiling Chen; Sergio Cittolin; Günther Dissertori; Michael Dittmar; Jürg Eugster; Klaus Freudenreich; Christoph Grab; Alain Hervé; Wieland Hintz; Pierre Lecomte; Werner Lustermann; Carmelo Marchica; Pablo Martinez Ruiz Del Arbol; Paolo Meridiani; Predrag Milenovic; Filip Moortgat; Pascal Nef; Francesca Nessi-Tedaldi; Luc Pape; Felicitas Pauss; Thomas Punz; Andrea Rizzi; Alessandro Thea; Konstantinos Theofilatos; Daniel Treille; Christina Urscheler; Rainer Wallny; Lukas Wehrli; Joanna Weng; CMS Collaboration

doi:10.1140/epjc/s10052-011-1575-8

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Prompt and non-prompt J/Ïˆ production in pp collisions at âˆšs=7 TeV

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Prompt and non-prompt J/Ïˆ production in pp collisions at âˆšs=7 TeV

Vardan Khachatryan, Matthias Weber, Pierluigi Bortignon, Lea Caminada, Zhiling Chen, Sergio Cittolin, Günther Dissertori, Michael Dittmar, Jürg Eugster, Klaus Freudenreich, …

The European physical journal. C, Particles and fields, Vol.71(3), 1575

03/01/2011

DOI: 10.1140/epjc/s10052-011-1575-8

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Abstract

The production of J/ψ mesons is studied in pp collisions at s√=7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 nb−1. The J/ψ differential cross section is determined, as a function of the J/ψ transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/ψ) component. Integrated over J/ψ transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range |y|<2.4, the measured cross sections, times the dimuon decay branching fraction, are 70.9±2.1(stat.)±3.0(syst.)±7.8(luminosity) nb for prompt J/ψ mesons assuming unpolarized production and 26.0±1.4(stat.)±1.6(syst.)±2.9(luminosity) nb for J/ψ mesons from b-hadron decays.

Astrophysics

Cosmology

High Energy Physics

Experiment

Extragalactic Astrophysics

High Energy Astrophysical Phenomena

Nuclear Experiment

Details

Title: Subtitle: Prompt and non-prompt J/Ïˆ production in pp collisions at âˆšs=7 TeV
Creators: Vardan Khachatryan
Matthias Weber - RWTH Aachen University
Pierluigi Bortignon
Lea Caminada
Zhiling Chen
Sergio Cittolin
Günther Dissertori
Michael Dittmar
Jürg Eugster
Klaus Freudenreich
Christoph Grab
Alain Hervé
Wieland Hintz
Pierre Lecomte
Werner Lustermann
Carmelo Marchica
Pablo Martinez Ruiz Del Arbol
Paolo Meridiani
Predrag Milenovic
Filip Moortgat
Pascal Nef
Francesca Nessi-Tedaldi
Luc Pape
Felicitas Pauss
Thomas Punz
Andrea Rizzi
Alessandro Thea
Konstantinos Theofilatos
Daniel Treille
Christina Urscheler
Rainer Wallny
Lukas Wehrli
Joanna Weng
CMS Collaboration
Contributors: C. R Newsom (Contributor) - University of Iowa, Physics and Astronomy
Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The European physical journal. C, Particles and fields, Vol.71(3), 1575
DOI: 10.1140/epjc/s10052-011-1575-8
NLM abbreviation: Eur Phys J C Part Fields
ISSN: 1434-6044
eISSN: 1434-6052
Publisher: Springer
Language: English
Date published: 03/01/2011
Academic Unit: Physics and Astronomy
Record Identifier: 9984199773602771

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