Measurement of the CP-Violation Parameter sin2 phi(1) with a New Tagging Method at the Y(5S) Resonance

  • Sato, Y.
  • Yamamoto, H.
  • Aihara, H.
  • Asner, D. M.
  • Aulchenko, V.
  • ... Cheon, Byung Gu
  • 외 156명
Citations

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8

초록

We report a measurement of the CP-violation parameter sin2 phi(1) at the Y(5S) resonance using a new tagging method, called "B-pi tagging.'' In Y(5S) decays containing a neutral B meson, a charged B, and a charged pion, the neutral B is reconstructed in the J / psi K-S(0) CP-eigenstate decay channel. The initial flavor of the neutral B meson at the moment of the Y(5S) decay is opposite to that of the charged B and may thus be inferred from the charge of the pion without reconstructing the charged B. From the asymmetry between B-pi(+) and B-pi(-) tagged J / psi K-S(0) yields, we determine sin2 phi(1) 0.57 +/- 0.58(stat) +/- 0.06(syst). The results are based on 121 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.

키워드

BELLE
제목
Measurement of the CP-Violation Parameter sin2 phi(1) with a New Tagging Method at the Y(5S) Resonance
저자
Sato, Y.Yamamoto, H.Aihara, H.Asner, D. M.Aulchenko, V.Aushev, T.Aziz, T.Bakich, A. M.Bhardwaj, V.Bhuyan, B.Bischofberger, M.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Chang, P.Chen, P.Cheon, Byung GuChilikin, K.Chistov, R.Cho, I. -S.Cho, K.Choi, S. -K.Choi, Y.Dalseno, J.Dolezal, Z.Drasal, Z.Eidelman, S.Epifanov, D.Fast, J. E.Gaur, V.Gabyshev, N.Goh, Y. M.Golob, B.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hyun, H. J.Ishikawa, A.Itoh, R.Iwabuchi, M.Iwasaki, Y.Iwashita, T.Julius, T.Kapusta, P.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, H. J.Kim, H. O.Kim, J. B.Kim, J. H.Kim, K. T.Kim, M. J.Kim, S. K.Kim, Y. J.Kinoshita, K.Ko, B. R.Kobayashi, N.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kumar, R.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, S. -H.Li, J.Li, Y.Liu, C.Liu, Z. Q.Louvot, R.McOnie, S.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Moll, A.Muramatsu, N.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nishimura, K.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Onuki, Y.Ostrowicz, W.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pedlar, T. K.Petric, M.Piilonen, L. E.Poluektov, A.Roehrken, M.Ryu, S.Sahoo, H.Sakai, Y.Sanuki, T.Schneider, O.Schwanda, C.Schwartz, A. J.Seidl, R.Senyo, K.Seon, O.Sevior, M. E.Shapkin, M.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Smerkol, P.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Stypula, J.Sumihama, M.Sumiyoshi, T.Tanaka, S.Tatishvili, G.Teramoto, Y.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Varner, G.Varvell, K. E.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanabe, M.Watanabe, Y.Wicht, J.Won, E.Yabsley, B. D.Yamashita, Y.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
DOI
10.1103/PhysRevLett.108.171801
발행일
2012-04
유형
Article
저널명
Physical Review Letters
108
17
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