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

M-Z Wang; 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

doi:10.1103/PhysRevLett.90.201802

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

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

Authors

M-Z Wang¹, 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

Affiliation

¹ Department of Physics, National Taiwan University, Taipei.

PMID: 12785883
DOI: 10.1103/PhysRevLett.90.201802

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).