Observation of the $B^+ \to D^*-K^+π^+$ decayстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Дата последнего поиска статьи во внешних источниках: 21 августа 2017 г.
Аннотация:The B+→D∗−K+π+ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3fb−1. A clear signal is observed, and the ratio of its branching fraction to that of the B+→D∗−π+π+ normalisation channel is measured to be
B(B+→D∗−K+π+)B(B+→D∗−π+π+)=(6.39±0.27±0.48)×10−2,
where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+→D∗−K+π+ decay.