Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/114894
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DC Field | Value | Language |
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dc.contributor.author | Aad, G. | - |
dc.contributor.author | Abbott, B. | - |
dc.contributor.author | Abdallah, J. | - |
dc.contributor.author | Abdinov, O. | - |
dc.contributor.author | Aben, R. | - |
dc.contributor.author | Abolins, M. | - |
dc.contributor.author | AbouZeid, O.S. | - |
dc.contributor.author | Abramowicz, H. | - |
dc.contributor.author | Abreu, H. | - |
dc.contributor.author | Abreu, R. | - |
dc.contributor.author | Abulaiti, Y. | - |
dc.contributor.author | Acharya, B.S. | - |
dc.contributor.author | Adamczyk, L. | - |
dc.contributor.author | Adams, D.L. | - |
dc.contributor.author | Adelman, J. | - |
dc.contributor.author | Adomeit, S. | - |
dc.contributor.author | Adye, T. | - |
dc.contributor.author | Affolder, A.A. | - |
dc.contributor.author | Agatonovic-Jovin, T. | - |
dc.contributor.author | Aguilar-Saavedra, J.A. | - |
dc.contributor.author | et al. | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | European Physical Journal C: Particles and Fields, 2016; 76(1):4-1-4-24 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.issn | 1434-6052 | - |
dc.identifier.uri | http://hdl.handle.net/2440/114894 | - |
dc.description.abstract | The decays B+c→J/ψD+s and B+c→J/ψD∗+s are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb−1 of pp collisions collected at centre-of-mass energies s√=7 TeV and 8 TeV, respectively. Signal candidates are identified through J/ψ→μ+μ− and D(∗)+s→ϕπ+(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+c→J/ψD+s and B+c→J/ψD∗+s, and the transverse polarisation fraction in B+c→J/ψD∗+s decay are measured. The transverse polarisation fraction is determined to be Γ±±(B+c→J/ψD∗+s)/Γ(B+c→J/ψD∗+s)=0.38±0.23±0.07, and the derived ratio of the branching fractions of the two modes is BB+c→J/ψD∗+s/BB+c→J/ψD+s=2.8+1.2−0.8±0.3, where the first error is statistical and the second is systematic. Finally, a sample of B+c→J/ψπ+ decays is used to derive the ratios of branching fractions BB+c→J/ψD+s/BB+c→J/ψπ+=3.8±1.1±0.4±0.2 and BB+c→J/ψD∗+s/BB+c→J/ψπ+=10.4±3.1±1.5±0.6, where the third error corresponds to the uncertainty of the branching fraction of D+s→ϕ(K+K−)π+ decay. The available theoretical predictions are generally consistent with the measurement. | - |
dc.description.statementofresponsibility | G. Aad … Paul D. Jackson … Lawrence Lee-Jr … Andreas Petridis … Nitesh Soni … Martin White … et al. (ATLAS Collaboration) | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.rights | © CERN for the benefit of the ATLAS collaboration 2015. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | - |
dc.source.uri | http://dx.doi.org/10.1140/epjc/s10052-015-3743-8 | - |
dc.subject | ATLAS Collaboration | - |
dc.title | Study of the B⁺c → J/ψD⁺s and B⁺c →J/ψD*s⁺ decays with the ATLAS detector | - |
dc.title.alternative | Study of the B(+)c -> J/psiD(+)s and B(+)c ->J/psiD*s(+) decays with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1140/epjc/s10052-015-3743-8 | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 3 Physics publications |
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hdl_114894.pdf | Published version | 1.42 MB | Adobe PDF | View/Open |
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