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Observation of B-0 -> p(Lambda)over-barD(*)(-)
- Authors
- Chang, Y. -Y.; Wang, M. -Z.; Abdesselam, 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, T. E.; Cervenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, 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.
- Issue Date
- 24-11월-2015
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.115, no.22
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 115
- Number
- 22
- ISSN
- 0031-9007
- Abstract
- 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.
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