Observation of B-0 -> p(Lambda)over-barD(*)(-)

  • Chang, YY
  • Wang, MZ
  • Abdesselam, A.
  • Adachi, I.
  • Adamczyk, K.
  • ... Cheon, Byung Gu
  • 외 166명
Citations

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Citations

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10

초록

We report the first observation of the decays B-0 -> p (Lambda) over barD(*)(-). The data sample of 711 fb(-1) used in this analysis corresponds to 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe 19.8 sigma and 10.8 sigma excesses of events for the two decay modes and measure the branching fractions of B-0 -> p (Lambda) over barD(-) and B-0 -> p (Lambda) over barD*(-) to be (25.1 +/- 2.6 +/- 3.5) x 10(-6) and (33.6 +/- 6.3 +/- 4.4) x 10(-6), respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the dibaryon (p (Lambda) over bar) system is observed, consistent with that observed in similar B decays.

키워드

BARYON-ANTIBARYONDECAYS
제목
Observation of B-0 -> p(Lambda)over-barD(*)(-)
저자
Chang, YYWang, MZAbdesselam, A.Adachi, I.Adamczyk, K.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aushev, T.Babu, V.Badhrees, I.Bakich, A. M.Barberio, E.Bhuyan, B.Biswal, J.Bobrov, A.Bozek, A.Bracko, M.Browder, TECervenkov, D.Chekelian, V.Chen, A.Cheon, Byung GuChilikin, K.Chistov, R.Chobanova, V.Choi, S. -K.Choi, Y.Cinabro, D.Dalseno, J.Danilov, M.Dingfelder, J.Dolezal, Z.Drasal, Z.Dutta, D.Eidelman, S.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Ganguly, S.Garmash, A.Gillard, R.Glattauer, R.Goh, Y. M.Goldenzweig, P.Greenwald, D.Grzymkowska, O.Haba, J.Hayasaka, K.Hayashii, H.He, X. H.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, Y.Jacobs, W. W.Jaegle, I.Joffe, D.Joo, K. K.Kawasaki, T.Kim, D. Y.Kim, H. J.Kim, J. B.Kim, J. H.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lai, Y. -T.Lee, I. S.Li, L.Li, Y.Libby, J.Liventsev, D.Lukin, P.Masuda, M.Matvienko, D.Miyabayashi, K.Miyake, H.Miyata, H.Mizuk, R.Mohanty, G. B.Mohanty, S.Moll, A.Moon, H. K.Mori, T.Nakano, E.Nakao, M.Nanut, T.Nayak, M.Nishida, S.Ogawa, S.Ozaki, H.Pakhlov, P.Pakhlova, G.Pal, B.Park, C. W.Pedlar, T. K.Pestotnik, R.Petric, M.Piilonen, L. E.Rauch, J.Ribezl, E.Ritter, M.Rostomyan, A.Ryu, S.Sahoo, H.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Seong, I. S.Sevior, M. E.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Simon, F.Sohn, Y. -S.Staric, M.Stypula, J.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Tamponi, U.Tanida, K.Teramoto, Y.Uglov, T.Unno, Y.Uno, S.Usov, Y.Van Hulse, C.Vanhoefer, P.Varner, G.Vorobyev, V.Vossen, A.Wagner, M. N.Wang, C. H.Wang, P.Watanabe, M.Watanabe, Y.Williams, K. M.Won, E.Yamaoka, J.Yashchenko, S.Yelton, J.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
DOI
10.1103/PhysRevLett.115.221803
발행일
2015-11
유형
Article
저널명
Physical Review Letters
115
22
페이지
1 ~ 8

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