Measurement of D*± meson production in jets from pp collisions at s√=7 TeV with the ATLAS detector

, The ATLAS collaboration (2012) Measurement of D*± meson production in jets from pp collisions at s√=7  TeV with the ATLAS detector. Physical Review D, 85 (5). ISSN 1550-7998

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This paper reports a measurement of D*± meson production in jets from proton-proton collisions at a center-of-mass energy of s√=7  TeV at the CERN Large Hadron Collider. The measurement is based on a data sample recorded with the ATLAS detector with an integrated luminosity of 0.30  pb−1 for jets with transverse momentum between 25 and 70 GeV in the pseudorapidity range |η|<2.5. D*± mesons found in jets are fully reconstructed in the decay chain: D*+→D0π+, D0→K−π+, and its charge conjugate. The production rate is found to be N(D*±)/N(jet)=0.025±0.001(stat.)±0.004(syst.) for D*± mesons that carry a fraction z of the jet momentum in the range 0.3<z<1. Monte Carlo predictions fail to describe the data at small values of z, and this is most marked at low jet transverse momentum.

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Journal Article
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Physical Review D
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Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration
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03 Jan 2014 09:03
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26 Nov 2020 02:31