新山　雅之
   所属   京都産業大学  理学部 物理科学科
   職種   教授
発行・発表の年月 2022/06
形態種別 その他
標題 Search for $X(3872)\toπ^+π^-π^0$ at Belle
執筆形態 その他
著者・共著者 Belle Collaboration,J. H. Yin,E. Won,I. Adachi,H. Aihara,S. Al Said,D. M. Asner,H. Atmacan,V. Aulchenko,T. Aushev,R. Ayad,V. Babu,S. Bahinipati,P. Behera,K. Belous,J. Bennett,M. Bessner,V. Bhardwaj,B. Bhuyan,T. Bilka,D. Bodrov,G. Bonvicini,J. Borah,A. Bozek,M. Bračko,P. Branchini,T. E. Browder,A. Budano,M. Campajola,D. Červenkov,M. -C. Chang,P. Chang,V. Chekelian,A. Chen,B. G. Cheon,K. Chilikin,H. E. Cho,K. Cho,S. -J. Cho,S. -K. Choi,Y. Choi,S. Choudhury,D. Cinabro,S. Das,G. De Pietro,R. Dhamija
概要 We present a search for the decay $X(3872) \to \pi^+\pi^-\pi^0$ in the
$(772\pm11)\times10^6$ $\Upsilon(4S)\to B \bar B$ data sample collected at the
Belle detector, where the $X(3872)$ is produced in $B^{\pm}\to K^{\pm}X(3872)$
and $B^{0}\to K_{S}^0 X(3872)$ decays. We do not observe a signal, and set 90\%
credible upper limits for two different models of the decay processes: if the
decay products are distributed uniformly in phase space, $\mathcal{B}(X(3872)
\to \pi^+\pi^-\pi^0) < 1.3\%$; if $M(\pi^+\pi^-)$ is concentrated near the mass
of the $D^0 \bar D^0$ pair in the process $X(3872)\to D^0\bar{D}^{*0}+c.c.\to
D^0 \bar D^{0}\pi^0\to\pi^+ \pi^- \pi^0$, $\mathcal{B}(X(3872) \to
\pi^+\pi^-\pi^0) < 1.2\times10^{-3}$.
PermalinkURL http://arxiv.org/abs/2206.08592v4
researchmap用URL http://arxiv.org/pdf/2206.08592v4