Электронная библиотека (репозиторий) Томского государственного университета
мезоны | Chelkov, G. A. | Ai, X. C.

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Source: Physics Letters B. 2015. Vol. 750. P. 466-474
Type: статьи в журналах
Date: 2015
Description: We study D+s decays to final states involving the η with a 482 pb−1 data sample collected at √s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractionsB(D+s →η ... More
Source: Physical Review D. 2015. Vol. 92, № 1. P. 012001-1-012001-11
Type: статьи в журналах
Date: 2015
Description: We report the first observation of the Dalitz decay η′→γe+e−, based on a data sample of 1.31 billion J/ψ events collected with the BESIII detector. The η′ mesons are produced via the J/ψ→γη′ decay pro ... More
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