Measurement of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays, and an improved constraint on phi(2)

  • Julius, T.
  • Sevior, M. E.
  • Mohanty, G. B.
  • Adachi, I.
  • Aihara, H.
  • ... Cheon, B. G.
  • 외 180명
Citations

WEB OF SCIENCE

15
Citations

SCOPUS

27

초록

We measure the branching fraction and CP violation asymmetry in the decay B-0 -> pi(0)pi(0), using a data sample of 752 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The obtained branching fraction and direct CP asymmetry are B(B -> pi(0)pi(0)) = [1.31 +/- 0.19(stat) +/- 0.19(syst)] x 10(-6) and A(CP) = +0.14 +/- 0.36(stat) +/- 0.10(syst), respectively. The signal significance, including the systematic uncertainty, is 6.4 standard deviations. We combine these results with Belle's earlier measurements of B-0 -> pi(+)pi(-) and B-+/- -> pi(+/-)pi(0) to exclude the CP-violating parameter phi(2) from the range 15.5 degrees < phi(2) < 75.0 degrees at 95% confidence level.

키워드

VIOLATION
제목
Measurement of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays, and an improved constraint on phi(2)
저자
Julius, T.Sevior, M. E.Mohanty, G. B.Adachi, I.Aihara, H.Al Said, S.Asner, D. M.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bakich, A. M.Bansal, V.Barberio, E.Barrett, M.Berger, M.Bhardwaj, V.Bhuyan, B.Biswal, J.Bloomfield, T.Bobrov, A.Bondar, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chang, M-CChao, Y.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, K.Choi, Y.Cinabro, D.Dash, N.Di Carlo, S.Dolezal, Z.Dossett, D.Drasal, Z.Dutta, D.Eidelman, S.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gillard, R.Goldenzweig, P.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hou, W-SHsu, C-LIijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, Y.Jacobs, W. W.Jaegle, I.Jin, Y.Joffe, D.Joo, K. K.Kahn, J.Karyan, G.Katrenko, P.Kawasaki, T.Kiesling, C.Kim, D. Y.Kim, H. J.Kim, J. B.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Krokovny, P.Krohn, J. F.Kuhr, T.Kulasiri, R.Kuzmin, A.Kwon, Y-JLange, J. S.Lee, I. S.Li, C. H.Li, L.Li, Y.Li Gioi, L.Libby, J.Liventsev, D.Luo, T.MacNaughton, J.Masuda, M.Matsuda, T.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Moon, H. K.Mori, T.Mussa, R.Nakano, E.Nakao, M.Nanut, T.Nath, K. J.Natkaniec, Z.Nayak, M.Nisar, N. K.Nishida, S.Ogawa, S.Ono, H.Pakhlov, P.Pakhlova, G.Pal, B.Pardi, S.Park, C-SPark, H.Pesantez, L.Pestotnik, R.Piilonen, L. E.Pulvermacher, C.Ritter, M.Sahoo, H.Sakai, Y.Salehi, M.Sandilya, S.Santelj, L.Sanuki, T.Sato, Y.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Shebalin, V.Shibata, T-AShiu, J-G.Shwartz, B.Sokolov, A.Solovieva, E.Staric, M.Sumiyoshi, T.Tamponi, U.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Van Hulse, C.Varner, G.Varvell, K. E.Vossen, A.Waheed, E.Wang, C. H.Wang, M-ZWang, P.Watanabe, M.Watanabe, Y.Widmann, E.Williams, K. M.Won, E.Yamashita, Y.Ye, H.Yuan, C. Z.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
DOI
10.1103/PhysRevD.96.032007
발행일
2017-08
유형
Article
저널명
Physical Review d
96
3
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