# Measurement of J/ψ production in pp collisions at √s = 7 TeV

LHCb Collaboration; Anderson, J; Bernet, R; Büchler-Germann, A; Bursche, A; Chiapolini, N; De Cian, M; Müller, K; Salzmann, C; Steinkamp, O; Straumann, U (2011). Measurement of J/ψ production in pp collisions at √s = 7 TeV. European Physical Journal C - Particles and Fields, 71(5):1645.

## Abstract

The production of mesons in proton–proton collisions at is studied with the LHCb detector at the LHC. The differential cross-section for prompt production is measured as a function of the transverse momentum pT and rapidity y in the fiducial region and y∈[2.0;4.5]. The differential cross-section and fraction of from b-hadron decays are also measured in the same pT and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb−1. The measured cross-sections integrated over the fiducial region are production and from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt production cross-section is obtained assuming no polarisation and the third error indicates the acceptance uncertainty due to this assumption.

## Abstract

The production of mesons in proton–proton collisions at is studied with the LHCb detector at the LHC. The differential cross-section for prompt production is measured as a function of the transverse momentum pT and rapidity y in the fiducial region and y∈[2.0;4.5]. The differential cross-section and fraction of from b-hadron decays are also measured in the same pT and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb−1. The measured cross-sections integrated over the fiducial region are production and from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt production cross-section is obtained assuming no polarisation and the third error indicates the acceptance uncertainty due to this assumption.

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Other titles: Measurement of J/psi production in pp collisions at sqrt(s)=7 TeV Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English 2011 14 Feb 2012 21:38 20 Sep 2018 03:30 Springer 1434-6044 (P) 1434-6052 (E) The original publication is available at www.springerlink.com Gold https://doi.org/10.1140/epjc/s10052-011-1645-y http://arxiv.org/abs/1103.0423

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