Determination of the Ratio of b-Quark Fragmentation Fractions [functionof] sub(s)[functionof] sub(d)in pp Collisions at [radical]s = 7 TeV with the ATLAS Detector

• Published in: Physical review letters Vol. 115; no. 26
• Main Authors: Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Aben, R, Abolins, M, AbouZeid, O S, Abramowicz, H, Abreu, H
• Format: Journal Article
• Language: English
• Published: 31-12-2015
• Subjects: Collisions; Decay; Detectors; Fragmentation; Luminosity; Mesons; Texts
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.115.262001

(ProQuest: ... denotes formulae and/or non-USASCII text omitted) With an integrated luminosity of 2.47 fb super(-1) recorded by the ATLAS experiment at the LHC, the exclusive decays ... [arrowright] J/[psi][varphi] and ... [arrowright] J/[psi]K* super(0) of B mesons produced in pp collisions at [radical]s = 7 TeV are used to determine the ratio of fragmentation fractions [functionof] sub(s)[functionof] sub()d From the observed ... [arrowright] J/[psi][varphi] and ... [arrowright] J/[psi]K* super(0) yields, the quantity ... is measured to be 0.199 + or - 0.004(stat) + or - 0.008(syst). Using a recent theory prediction for [...] yields ([functionof] sub(s)[functionof] sub()d = 0.240 + or - 0.004(stat) + or - 0.010(syst) + or - 0.017(th). This result is based on a new approach that provides a significant improvement of the world average.