Measurement of D*± meson production in jets from pp collisions at √s=7 TeV with the ATLAS detector
ATLAS Collaboration (Including: Farrington, Sinead). (2012) Measurement of D*± meson production in jets from pp collisions at √s=7 TeV with the ATLAS detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.85 (No.5). 052005. ISSN 1550-7998
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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.052005
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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