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Measurement of D*(+/-) meson production in jets from pp collisions at root s=7 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3003
2012 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 85, no 5, 052005- p.Article in journal (Refereed) Published
Abstract [en]

This paper reports a measurement of D*(+/-) meson production in jets from proton- proton collisions at a center- of- mass energy of root 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 vertical bar eta vertical bar <2.5. D*(+/-) mesons found in jets are fully reconstructed in the decay chain: D*(+/-)-> D-0 pi(+), D-0 -> K-pi(+), 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.

Place, publisher, year, edition, pages
2012. Vol. 85, no 5, 052005- p.
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Physical Sciences
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URN: urn:nbn:se:kth:diva-93438DOI: 10.1103/PhysRevD.85.052005ISI: 000301647300002Scopus ID: 2-s2.0-84863340681OAI: oai:DiVA.org:kth-93438DiVA: diva2:516002
Note
QC 20120417. Author count: 3003Available from: 2012-04-17 Created: 2012-04-17 Last updated: 2017-12-07Bibliographically approved

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