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Evidence for B- -> tau(-)(nu)over-bar(tau) with a semileptonic tagging method
- Authors
- Hara, K.; Iijima, T.; Aihara, H.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bakich, A. M.; Barberio, E.; Belous, K.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chang, P.; Chao, Y.; Chen, A.; Cheon, B. G.; Chiang, C-C.; Cho, I-S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dolezal, Z.; Dungel, W.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Ha, H.; Hasegawa, Y.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hsiung, Y. B.; Hyun, H. J.; Inami, K.; Iwabuchi, M.; Iwasaki, Y.; Julius, T.; Kang, J. H.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, J. H.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kodys, P.; Korpar, S.; Kreps, M.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Kwon, Y-J.; Kyeong, S-H.; Lee, M. J.; Lee, S-H.; Li, J.; Limosani, A.; 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.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Ozaki, H.; Pakhlova, G.; Park, C. W.; Park, H. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Prim, M.; Rozanska, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schuemann, J.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Shiu, J-G.; Shwartz, B.; Singh, J. B.; Smerkol, P.; Solovieva, E.; Stanic, S.; Staric, M.; Sumisawa, K.; Sumiyoshi, T.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Ushiroda, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. H.; Wang, M-Z.; Wang, P.; Watanabe, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Yuan, C. Z.; Zhang, C. C.; Zhilich, V.; Zivko, T.; Zupanc, A.; Zyukova, O.
- Issue Date
- 22-10월-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.82, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 82
- Number
- 7
- ISSN
- 1550-7998
- Abstract
- We present a measurement of the decay B- -> tau(-)(nu) over bar (tau) using a data sample containing 657 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. A sample of B+B- pairs are tagged by reconstructing one B+ meson decaying semileptonically. We detect the B- -> tau(-)(nu) over bar (tau) candidate in the recoil. We obtain a signal with a significance of 3.6 standard deviations including systematic uncertainties, and measure the branching fraction to be B- -> tau(-)(nu) over bar (tau) [1.54(-0.37)(+0.38) (stat) (+0.29)(-0.31) (syst) x 10(-4). This result confirms the evidence for B- -> tau(-)(nu) over bar (tau) obtained in a previous Belle measurement that used a hadronic B tagging method.
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