ATLAS, Collaboration; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Kabana, Sonja; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania; Weber, Michael (2015). Determination of the ratio of b -quark fragmentation fractions f s /f d in pp collisions at √s =7 TeV with the ATLAS detector. Physical review letters, 115(26), p. 262001. American Physical Society 10.1103/PhysRevLett.115.262001
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With an integrated luminosity of 2.47 fb⁻¹ recorded by the ATLAS experiment at the LHC, the exclusive decays B 0 s →J/ψϕ and B 0 d →J/ψK ∗0 of B mesons produced in pp collisions at √s=7 TeV are used to determine the ratio of fragmentation fractions f s /f d . From the observed B 0 s →J/ψϕ and B 0 d →J/ψK ∗0 yields, the quantity f s f d B(B 0 s →J/ψϕ)B(B 0 d →J/ψK ∗0 ) is measured to be 0.199 ± 0.004(stat) ± 0.008(sys). Using a recent theory prediction for B(B 0 s →J/ψϕ)B(B 0 d →J/ψK ∗0 ) yields f s f d = 0.240 ± 0.004(stat) ± 0.010(sys) ± 0.017(th). This result is based on a new approach that provides a significant improvement of the world average.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 08 Faculty of Science > Physics Institute |
UniBE Contributor: |
Beck, Hans Peter, Cervelli, Alberto, Ereditato, Antonio, Haug, Sigve, Meloni, Federico, Mullier, Geoffrey André Adrien, Pretzl, Klaus-Peter, Stramaglia, Maria Elena, Stucci, Stefania, Weber, Michele |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0031-9007 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Annette Krebs-Wegenast |
Date Deposited: |
08 Sep 2016 11:12 |
Last Modified: |
05 Dec 2022 14:58 |
Publisher DOI: |
10.1103/PhysRevLett.115.262001 |
ArXiv ID: |
1507.08925 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt |
BORIS DOI: |
10.7892/boris.87601 |
URI: |
https://boris.unibe.ch/id/eprint/87601 |
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