Study of the B+cJ/ψD+s and B+cJ/ψD∗+s decays with the ATLAS detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00470661" target="_blank" >RIV/68378271:_____/16:00470661 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1140/epjc/s10052-015-3743-8" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-015-3743-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-015-3743-8" target="_blank" >10.1140/epjc/s10052-015-3743-8</a>
Alternative languages
Result language
angličtina
Original language name
Study of the B+cJ/ψD+s and B+cJ/ψD∗+s decays with the ATLAS detector
Original language description
The decays B+cJ/ψD+s and B+cJ/ψD∗+s are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb1 of pp collisions collected at centre-of-mass energies s=7 TeV and 8 TeV, respectively. Signal candidates are identified through J/ψμ+μ and D(∗)+sϕπ+(γ/π0) decays. With a two-dimensional likelihood fit involving the B+c reconstructed invariant mass and an angle between the μ+ and D+s candidate momenta in the muon pair rest frame, the yields of B+cJ/ψD+s and B+cJ/ψD∗+s , and the transverse polarisation fraction in B+cJ/ψD∗+s decay are measured. The transverse polarisation fraction is determined to be Γ(B+cJ/ψD∗+s)/Γ(B+cJ/ψD∗+s)=0.380.230.07 , and the derived ratio of the branching fractions of the two modes is BB+cJ/ψD∗+s/BB+cJ/ψD+s=2.8+1.20.80.3 , where the first error is statistical and the second is systematic. Finally, a sample of B+cJ/ψπ+ decays is used to derive the ratios of branching fractions BB+cJ/ψD+s/BB+cJ/ψπ+=3.81.10.40.2 and BB+cJ/ψD∗+s/BB+cJ/ψπ+=10.43.11.50.6 , where the third error corresponds to the uncertainty of the branching fraction of D+sϕ(K+K)π+ decay.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal C
ISSN
1434-6044
e-ISSN
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Volume of the periodical
76
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
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UT code for WoS article
000370645100003
EID of the result in the Scopus database
2-s2.0-84953865617