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. 2003 May 23;90(20):201802.
doi: 10.1103/PhysRevLett.90.201802. Epub 2003 May 22.

Observation of B0-->pLambda(pi)(-)

M-Z Wang  1 , Y-J Lee, K Abe, K Abe, T Abe, H Aihara, M Akatsu, Y Asano, T Aso, T Aushev, A M Bakich, Y Ban, E Banas, A Bay, P K Behera, I Bizjak, A Bondar, A Bozek, M Bracko, T E Browder, B C K Casey, M-C Chang, P Chang, Y Chao, K-F Chen, B G Cheon, R Chistov, Y Choi, Y K Choi, A Drutskoy, S Eidelman, V Eiges, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, R Guo, C Hagner, T Hara, M Hazumi, T Hojo, T Hokuue, Y Hoshi, W-S Hou, Y B Hsiung, H-C Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, R Itoh, H Iwasaki, Y Iwasaki, H K Jang, J H Kang, J S Kang, N Katayama, H Kawai, T Kawasaki, H Kichimi, D W Kim, H J Kim, J H Kim, K Kinoshita, S Kobayashi, P Krokovny, A Kuzmin, Y-J Kwon, S H Lee, J Li, S-W Lin, D Liventsev, J MacNaughton, G Majumder, F Mandl, T Matsuishi, S Matsumoto, T Matsumoto, W Mitaroff, H Miyata, G R Moloney, T Mori, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, J W Nam, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, T Okabe, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Park, K S Park, M Peters, L E Piilonen, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, M Satapathy, A Satpathy, O Schneider, S Schrenk, J Schümann, A J Schwartz, S Semenov, M E Sevior, H Shibuya, B Shwartz, V Sidorov, J B Singh, S Stanic, M Staric, A Sugi, T Sumiyoshi, S Y Suzuki, T Takahashi, F Takasaki, K Tamai, M Tanaka, G N Taylor, Y Teramoto, S Tokuda, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, G Varner, K E Varvell, C C Wang, C H Wang, Y Watanabe, E Won, B D Yabsley, Y Yamada, Y Yamashita, M Yamauchi, H Yanai, P Yeh, Z P Zhang, D Zontar; Belle Collaboration
Affiliations

Observation of B0-->pLambda(pi)(-)

M-Z Wang et al. Phys Rev Lett. .

Abstract

We report the first observation of the charmless hyperonic B decay, B0-->pLambda(pi)(-), using a 78 fb(-1) data sample recorded on the Upsilon(4S) resonance with the Belle detector at KEKB. The measured branching fraction is B(B0-->pLambda(pi)(-))=(3.97(+1.00)(-0.80)+/-0.56)x10(-6). Searches for B0-->pLambda(K)- and pSigma(0)pi(-) yield no significant signals and we set 90% confidence-level upper limits of B(B0-->pLambda(K)-)<8.2x10(-7) and B(B0-->pSigma(0)pi(-))<3.8x10(-6).

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