Inclusive measurement of the photon energy spectrum in b → sγ decays

P. Koppenburg, K. Abe, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. ChangY. Chao, K. F. Chen, B. G. Cheon, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W. S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, T. H. Kim, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, F. J. Ronga, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, O. Schneider, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, J. Ying, Y. Yusa, C. C. Zhang, Z. P. Zhang, T. Ziegler, D. Žontar

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Abstract

A fully inclusive measurement of the flavor changing neutral current decay b → sγ was discussed. The first and second moments of the photon energy spectrum above 1.8 GeV were also measured. It was found that the errors were statistical and systematic in nature. The results show that the moments measurement of the spectrum allows the determination of the b-quark mass and of its motion.

Original languageEnglish
Article number061803
Pages (from-to)061803-1-061803-6
JournalPhysical Review Letters
Volume93
Issue number6
DOIs
Publication statusPublished - 2004 Aug 6

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Koppenburg, P., Abe, K., Abe, K., Abe, T., Adachi, I., Aihara, H., Akatsu, M., Asano, Y., Aulchenko, V., Aushev, T., Bakich, A. M., Ban, Y., Bay, A., Bitenc, U., Bizjak, I., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., ... Žontar, D. (2004). Inclusive measurement of the photon energy spectrum in b → sγ decays. Physical Review Letters, 93(6), 061803-1-061803-6. [061803]. https://doi.org/10.1103/PhysRevLett.93.061803