First measurement of the CKM angle ϕ <inf>3</inf> withS B <sup>±</sup> → D(KS0 π <sup>+</sup> π <sup> −</sup> π <sup>0</sup>) K <sup>±</sup> decays

Date Issued
01-10-2019
Author(s)
Resmi, P. K.
Libby, J.
Trabelsi, K.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D. M.
Aulchenko, V.
Aushev, T.
Babu, V.
Badhrees, I.
Bakich, A. M.
Beleño, C.
Bennett, J.
Bhardwaj, V.
Bhuyan, B.
Bilka, T.
Biswal, J.
Bozek, A.
BraÄ ko, M.
Campajola, M.
ÄŒervenkov, D.
Chen, A.
Cheon, B. G.
Cho, H. E.
Cho, K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Cunliffe, S.
Dash, N.
De Nardo, G.
Di Capua, F.
Di Carlo, S.
Doležal, Z.
Dong, T. V.
Eidelman, S.
Epifanov, D.
Fast, J. E.
Ferber, T.
Fulsom, B. G.
Garg, R.
Gaur, V.
Gabyshev, N.
Garmash, A.
Giri, A.
Goldenzweig, P.
Golob, B.
Guan, Y.
Hayasaka, K.
Hayashii, H.
Hou, W. S.
Huang, K.
Iijima, T.
Inami, K.
Inguglia, G.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Iwasaki, Y.
Jacobs, W. W.
Jeon, H. B.
Jin, Y.
Joffe, D.
Kaliyar, A. B.
Kang, K. H.
Karyan, G.
Kawasaki, T.
Kiesling, C.
Kim, D. Y.
Kim, K. T.
Kim, S. H.
Kinoshita, K.
Kodyš, P.
Kotchetkov, D.
KrÇ zan, P.
Kroeger, R.
Krokovny, P.
Kuhr, T.
Kumar, R.
Kuzmin, A.
Kwon, Y. J.
Lee, S. C.
Li, Y. B.
Lieret, K.
Liventsev, D.
Lu, P. C.
Luo, T.
MacQueen, C.
Masuda, M.
Matsuda, T.
Matvienko, D.
Merola, M.
Miyabayashi, K.
Mizuk, R.
Mohanty, G. B.
Moon, H. K.
Nakano, T.
Nakao, M.
Nath, K. J.
DOI
Abstract
We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+π−π0) K± decays, where D indicates either a D0 or D¯ 0 meson. Measurements of the strong-phase difference of the D →KS0π+π−π0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106BB¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = (5.7−8.8+10.2±3.5±5.7)° and the suppressed amplitude ratio rB = 0.323±0.147±0.023±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 ϕ3 is (−29.7, 109.5)°, which is consistent with the current world average. [Figure not available: see fulltext.]
Volume
2019
Subjects