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

Tobias Kruker, Sonja Kabana, ATLAS Collaboration, Lucian Ancu, Claudia Borer, Michele Weber, Klaus Pretzl, Hanspeter Beck, Cyril Topfel, Sigve Haug, Teresa Fonseca Martin, Lukas Marti (+3 others)
2012

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This paper reports a measurement of D ÃAE meson production in jets from proton-proton collisions at a center-of-mass energy of ffiffi ffi s p ¼ 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 À1 for jets with transverse momentum between 25 and 70 GeV in the pseudorapidity range jj < 2:5. D ÃAE mesons found in jets are fully reconstructed in the decay chain: D Ãþ ! D 0 þ , D 0 ! K À þ ,
more » ... d its charge conjugate. The production rate is found to be NðD ÃAE Þ=NðjetÞ ¼ 0:025 AE 0:001ðstat:Þ AE 0:004ðsyst:Þ for D ÃAE 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.
doi:10.7892/boris.18108 fatcat:ol5oeargljdfha7yjcphcciuhq
Citation

Tobias Kruker, Sonja Kabana, ATLAS Collaboration, Lucian Ancu, Claudia Borer, Michele Weber, Klaus Pretzl, Hanspeter Beck, Cyril Topfel, Sigve Haug, Teresa Fonseca Martin, Lukas Marti, Valentina Gallo, Andreas Battaglia, Antonio Ereditato. "Measurement of D*± meson production in jets from pp collisions at √s=7 TeV with the ATLAS detector." (2012)