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新山 雅之 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 発行・発表の年月 | 2019/08 |
| 形態種別 | その他 |
| 標題 | First measurement of the CKM angle $φ_3$ with $B^{\pm}\to D(K_{\rm S}^0π^+π^-π^0)K^{\pm}$ decays |
| 執筆形態 | その他 |
| 著者・共著者 | Belle Collaboration,P. K. Resmi,J. Libby,K. Trabelsi,I. Adachi,H. Aihara,S. Al Said,D. M. Asner,V. Aulchenko,T. Aushev,V. Babu,I. Badhrees,A. M. Bakich,C. Beleño,J. Bennett,V. Bhardwaj,B. Bhuyan,T. Bilka,J. Biswal,A. Bozek,M. Bračko,M. Campajola,D. Červenkov,A. Chen,B. G. Cheon,H. E. Cho,K. Cho,Y. Choi,S. Choudhury,D. Cinabro,S. Cunliffe,N. Dash,G. De Nardo,F. Di Capua,S. Di Carlo,Z. Doležal,T. V. Dong,S. Eidelman,D. Epifanov,J. E. Fast,T. Ferber,B. G. Fulsom,R. Garg,V. Gaur,N. Gabyshev,A. Garma |
| 概要 | We present the first model-independent measurement of the CKM unitarity
triangle angle $\phi_3$ using $B^{\pm}\to D(K_{\rm S}^0\pi^+\pi^-\pi^0)K^{\pm}$ decays, where $D$ indicates either a $D^{0}$ or $\overline{D}^{0}$ meson. Measurements of the strong-phase difference of the $D \to K_{\rm S}^0\pi^+\pi^-\pi^0$ amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of $772\times 10^{6}$ $B\overline{B}$ events collected at the $\Upsilon(4S)$ resonance. We obtain $\phi_3 = (5.7~^{+10.2}_{-8.8} \pm 3.5 \pm 5.7)^{\circ}$ and the suppressed amplitude ratio $r_{B} = 0.323 \pm 0.147 \pm 0.023 \pm 0.051$. Here the first uncertainty is statistical, the second is the experimental systematic, and the third is due to the precision of the strong-phase parameters measured from CLEO-c data. The 95% confidence interval on $\phi_3$ is $(-29.7,~109.5)^{\circ}$, which is consistent with the current world average. |
| DOI | 10.1007/JHEP10(2019)178 |
| PermalinkURL | http://arxiv.org/abs/1908.09499v2 |
| researchmap用URL | http://arxiv.org/pdf/1908.09499v2 |