検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Evidence for $$B^+ rightarrow h_c K^+$$ and observation of $$eta_c(2S) to p bar{p} pi^+ pi^-$$

$$B^+ rightarrow h_c K^+$$の証拠と$$eta_c(2S) to p bar{p} pi^+ pi^-$$の観測

Chilikin, K.*; 谷田 聖; Belle Collaboration*; 他173名*

Chilikin, K.*; Tanida, Kiyoshi; Belle Collaboration*; 173 of others*

A search for the decays $$B^+ rightarrow h_c K^+$$ and $$B^0 rightarrow h_c K_S^0$$ is performed. Evidence for the decay $$B^+ rightarrow h_c K^+$$ is found; its significance is $$4.8sigma$$. No evidence is found for $$B^0 rightarrow h_c K_S^0$$. The branching fraction for $$B^+ rightarrow h_c K^+$$ is measured to be $$(3.7^{+1.0}_{-0.9}{}^{+0.8}_{-0.8}) times 10^{-5}$$; the upper limit for the $$B^0 rightarrow h_c K_S^0$$ branching fraction is $$1.4 times 10^{-5}$$ at $$90%$$ C.L. In addition, a study of the $$p bar{p} pi^+ pi^-$$ invariant mass distribution in the channel $$B^+ to (p bar{p} pi^+ pi^-) K^+$$ results in the first observation of the decay $$eta_c(2S) to p bar{p} pi^+ pi^-$$ with $$12.1sigma$$ significance. The analysis is based on the 711 $$mathrm{fb}^{-1}$$ data sample collected by the Belle detector at the asymmetric-energy $$e^+ e^-$$ collider KEKB at the $$Upsilon(4S)$$ resonance.

Access

:

- Accesses

InCites™

:

パーセンタイル:100

分野:Astronomy & Astrophysics

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.