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Determination of the Ratio of b-Quark Fragmentation Fractions f(s)/f(d) in pp Collisions at root s=7 TeV with the ATLAS Detector
ATLAS Collaboration
2015
发表期刊PHYSICAL REVIEW LETTERS
卷号115页码:262001
文章类型Article
摘要With an integrated luminosity of 2.47 fb(-1) recorded by the ATLAS experiment at the LHC, the exclusive decays B-s(0) -> J/psi phi and B-d(0) -> J/psi K*(0) of B mesons produced in pp collisions at root s = 7 TeV are used to determine the ratio of fragmentation fractions f(s)/f(d). From the observed B-s(0) -> J/psi phi and B-d(0) -> J/psi K*(0) yields, the quantity (f(s)/f(d))[B(B-s(0) -> J/psi phi)/B(B-d(0) -> J/psi K*(0) )] is measured to be 0.199 +/- 0.004(stat) +/- 0.008(syst). Using a recent theory prediction for [B(B-s(0) -> J/psi phi)/B(B-d(0) -> J/psi K*(0))] yields (f(s)/f(d)) = 0.240 +/- 0.004(stat) +/- 0.010(syst) +/- 0.017(th). This result is based on a new approach that provides a significant improvement of the world average.
学科领域Physics
DOI10.1103/PhysRevLett.115.262001
收录类别SCI ; EI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000367385200005
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/229080
专题实验物理中心
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ATLAS Collaboration. Determination of the Ratio of b-Quark Fragmentation Fractions f(s)/f(d) in pp Collisions at root s=7 TeV with the ATLAS Detector[J]. PHYSICAL REVIEW LETTERS,2015,115:262001.
APA ATLAS Collaboration.(2015).Determination of the Ratio of b-Quark Fragmentation Fractions f(s)/f(d) in pp Collisions at root s=7 TeV with the ATLAS Detector.PHYSICAL REVIEW LETTERS,115,262001.
MLA ATLAS Collaboration."Determination of the Ratio of b-Quark Fragmentation Fractions f(s)/f(d) in pp Collisions at root s=7 TeV with the ATLAS Detector".PHYSICAL REVIEW LETTERS 115(2015):262001.
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