Study of $B_c^+$ decays to the $K^+K^-π^+$ final state and evidence for the decay $B_c^+\toχ_c0π^+$статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 27 февраля 2017 г.
Аннотация:A study of B+c→K+K−π+ decays is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. Evidence for the decay B+c→χc0(→K+K−)π+ is reported with a significance of 4.0 standard deviations, resulting in the measurement of σ(B+c)σ(B+)×B(B+c→χc0π+) to be (9.8+3.4−3.0(stat)±0.8(syst))×10−6. Here B denotes a branching fraction while σ(B+c) and σ(B+) are the production cross-sections for B+c and B+ mesons. An indication of b¯c weak annihilation is found for the region m(K−π+)<1.834GeV/c2, with a significance of 2.4 standard deviations.