Study of η–η′ mixing in B-meson decay with the LHCb detector
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- 作者：S. M. Polikarpov ; I. M. Belyaev ; V. J. Egorychev ; D. V. Savrina
- 刊名：Physics of Atomic Nuclei
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：79
- 期：2
- 页码：288-291
- 全文大小：958 KB
- 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Elementary Particles and Nuclei
Russian Library of Science - 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
- ISSN：1562-692X
- 卷排序：79
文摘
The first ever observation of the decay process B0 → J/ψη′ is described. The branching ratios were measured for the decay processes B(s) → J/ψη(′), and the η–η′ mixing angles were determined on this basis. The first indication of the occurrence of the decay process Bs → ψ(2S)η′ is presented. The respective analysis was performed on the basis of data accumulated with the LHCb detector in proton–proton collisions at the c.m. collision energies of 7 and 8 TeV and the integrated luminosity of 3 fb−1.Original Russian Text © S.M. Polikarpov, I.M. Belyaev, V.J. Egorychev, D.V. Savrina, 2016, published in Yadernaya Fizika, 2016, Vol. 79, No. 2, pp. 177–181.