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Observation of B+-> p Lambda pi(+)pi(-) at Belle
- Authors
- Chen, P.; Wang, M. -Z.; Aihara, H.; Bakich, A. M.; Balagura, V.; Bhardwaj, V.; Bischofberger, M.; Bozek, A.; Bracko, M.; Browder, T. E.; Chang, M. -C.; Chang, P.; Chen, A.; Cheon, B. G.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dash, M.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Han, B. -Y.; Hara, T.; Hayashii, H.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwasaki, Y.; Kang, J. H.; Katayama, N.; Kawai, H.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, Y. I.; Kim, Y. J.; Ko, B. R.; Korpar, S.; Krizan, P.; Krokovny, P.; Kwon, Y. -J.; Kyeong, S. -H.; Lee, M. J.; Lee, S. -H.; Liu, C.; Liu, Y.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Nakano, E.; Nakao, M.; Nishida, S.; Ogawa, S.; Ohshima, T.; Okuno, S.; Pakhlova, G.; Park, C. W.; Park, H. K.; Peak, L. S.; Pestotnik, R.; Peters, M.; Petric, M.; Piilonen, L. E.; Poluektov, A.; Reisert, B.; Sahoo, H.; Sakai, Y.; Schneider, O.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shen, C. P.; Shiu, J. -G.; Simon, F.; Smerkol, P.; Sokolov, A.; Solovieva, E.; Staric, M.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Tsuboyama, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Wei, J. -T.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.
- Issue Date
- 12월-2009
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.80, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 80
- Number
- 11
- ISSN
- 1550-7998
- Abstract
- We study charmless B+ meson decays to the p Lambda pi(+)pi(-) final state using a 605 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. There are significant signals found with the p Lambda mass peaking near threshold. The observed branching fraction for nonresonant B+-> p Lambda pi(+)pi(-) is (5.92(-0.84)(+0.88)(stat)+/- 0.69(syst))x10(-6) with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+-> p Lambda rho(0) with a branching fraction of (4.78(-0.64)(+0.67)(stat)+/- 0.60(syst))x10(-6) and a significance of 9.5 standard deviations, and find a hint of a B+-> p Lambda f(2)(1270) signal. No other intermediate three-body decay is found in this study.
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