Measurement of D*(+/-) meson production in jets from pp collisions at root s=7 TeV with the ATLAS detector
2012 (English)In: Physical Review D, ISSN 1550-7998, Vol. 85, no 5, 052005- p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:uu:diva-175034DOI: 10.1103/PhysRevD.85.052005ISI: 000301647300002OAI: oai:DiVA.org:uu-175034DiVA: diva2:529899
With 2995 more authors from the ATLAS Collaboration.2012-05-312012-05-312012-05-31Bibliographically approved