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First Measurement of Inclusive B -> X-s eta Decays
- Authors
- Nishimura, K.; Browder, T. E.; Adachi, I.; Aihara, H.; Arinstein, K.; Aushev, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bracko, M.; Chang, M. -C.; Chao, Y.; Chen, A.; Chen, K. -F.; Chen, P.; Cheon, B. G.; Chiang, C. -C.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dolezal, Z.; Drutskoy, A.; Eidelman, S.; Gabyshev, N.; Golob, B.; Ha, H.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Joshi, N. J.; Julius, T.; Kang, J. H.; Kapusta, P.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kodys, P.; Korpar, S.; Krizan, P.; Kumita, T.; Kuzmin, A.; Kwon, Y. -J.; Kyeong, S. -H.; Lange, J. S.; Lee, M. J.; Lee, S. -H.; Li, J.; Liu, C.; Liu, Y.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Mori, T.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Ogawa, S.; Ohshima, T.; Olsen, S. L.; Ostrowicz, W.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Park, K. S.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Roehrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. -G.; Simon, F.; Smerkol, P.; Sokolov, A.; Solovieva, E.; Staric, M.; Sumiyoshi, T.; Suzuki, S.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Watanabe, Y.; Wicht, J.; Williams, K. M.; Won, E.; Yamashita, Y.; Yamauchi, M.; Zhang, C. C.; Zhang, Z. P.; Zhou, P.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.
- Issue Date
- Nov-2010
- Publisher
- American Physical Society
- Citation
- Physical Review Letters, v.105, no.19, pp 1 - 6
- Pages
- 6
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Physical Review Letters
- Volume
- 105
- Number
- 19
- Start Page
- 1
- End Page
- 6
- ISSN
- 0031-9007
1079-7114
- Abstract
- We report a first measurement of inclusive B -> X-s eta decays, where X-s is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657 x 10(6)B (B) over bar pairs accumulated with the Belle detector at the KEKB e(+)e(-) collider. For M-X1 < 2.6 GeV/c(2), we measure a branching fraction of [26.1 +/- 3.0(stat)(-2.1)(+1.9)(syst)(-7.1)(+4.0)(model)] x 10(-5) and a direct CP asymmetry of A(CP) = 0.13 +/- 0.04(-0.03)(+0.02). Over half of the signal occurs in the range M-X2 > 1.8 GeV/c(2).
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)