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Measurements of branching fractions for b -> K pi and b ->pi pi decaysopen access
- Authors
- Lin, S.-W.; Chang, P.; Abe, K.; Abe, K.; Adachi, I.; Aihara, H.; Anipko, D.; Aulchenko, V.; Aushev, T.; Bahinipati, S.; Bakich, A. M.; Barberio, E.; Bedny, I.; Bitenc, U.; Bizjak, I.; Blyth, S.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chang, M.-C.; Chao, Y.; Chen, A.; Chen, K.-F.; Chen, W. T.; Cheon, Byung Gu; Chistov, R.; Choi, S.-K.; Choi, Y.; Choi, Y. K.; Dalseno, J.; Dash, M.; Dragic, J.; Drutskoy, A.; Eidelman, S.; Fratina, S.; Gabyshev, N.; Garmash, A.; Go, A.; Golob, B.; Ha, H.; Haba, J.; Hara, T.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y. B.; Iijima, T.; Ikado, K.; Imoto, A.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kaji, H.; Kapusta, P.; Kataoka, S. U.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Krizan, P.; Krokovny, P.; Kulasiri, R.; Kumar, R.; Kuzmin, A.; Kwon, Y.-J.; Lee, M. J.; Lesiak, T.; Liventsev, D.; MacNaughton, J.; Mandl, F.; Matsumoto, T.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Moloney, G. R.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Satoyama, N.; Schietinger, T.; Schneider, O.; Schuemann, J.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Somov, A.; Soni, N.; Stanic, S.; Staric, M.; Stoeck, H.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Suzuki, S. Y.; Takasaki, F.; Tamai, K.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tian, X. C.; Tikhomirov, I.; Tsukamoto, T.; Uehara, S.; Ueno, K.; Unno, Y.; Uno, S.; Ushiroda, Y.; Varner, G.; Varvell, K. E.; Villa, S.; Wang, C. C.; Wang, C. H.; Wang, M.-Z.; Watanabe, Y.; Wicht, J.; Won, E.; Xie, Q. L.; Yabsley, B. D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Yusa, Y.; Zhang, C. C.; Zhang, Z. P.; Zupanc, A.
- Issue Date
- Sep-2007
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.99, no.12, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 99
- Number
- 12
- Start Page
- 1
- End Page
- 5
- ISSN
- 0031-9007
- Abstract
- We report measurements of branching fractions for B -> K pi and B ->pi pi decays based on a data sample of 449x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We also measure the ratios of partial widths for B -> K pi decays, namely R-c equivalent to 2 Gamma(B+-> K+pi(0))/Gamma(B+-> K-0 pi(+))=1.08 +/- 0.06 +/- 0.08 and R-n equivalent to Gamma(B-0 -> K+pi(-))/2 Gamma(B-0 -> K-0 pi(0))=1.08 +/- 0.08 +/- 0.08, where the first and the second errors are statistical and systematic, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consistent with standard model expectations.
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Collections - 서울 자연과학대학 > 서울 물리학과 > 1. Journal Articles
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)