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Study of the B -> X(3872)(-> D*(0)(D)over-bar(0)K decay
- Authors
- Aushev, T.; Zwahlen, N.; Adachi, I.; Aihara, H.; Bakich, A. M.; Balagura, V.; Bay, A.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Brodzicka, J.; Browder, T. E.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B. G.; Chiang, C. -C.; Chistov, R.; Cho, I. -S.; Choi, S. -K.; Choi, Y.; Dalseno, J.; Danilov, M.; Drutskoy, A.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Ha, H.; Haba, J.; Han, B. -Y.; Hayashii, H.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, M.; Iwasaki, Y.; Joshi, N. J.; Julius, T.; Kah, D. H.; Kang, J. H.; Kapusta, P.; Kawasaki, T.; Kim, H. J.; Kim, H. O.; Kim, J. H.; Kim, Y. I.; Kim, Y. J.; Ko, B. R.; Korpar, S.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kwon, Y. -J.; Lange, J. S.; Lee, S. -H.; Li, J.; Liu, C.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Medvedeva, T.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, C. W.; Park, H.; Park, H. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Ryu, S.; Sahoo, H.; Sakai, K.; Sakai, Y.; Schneider, O.; Schwanda, C.; Senyo, K.; Shapkin, M.; Shen, C. P.; Shiu, J. -G.; Shwartz, B.; Singh, J. B.; Smerkol, P.; Sokolov, A.; Solovieva, E.; Staric, M.; Sumiyoshi, T.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Vervink, K.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Yuan, C. Z.; Zhang, Z. P.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.
- Issue Date
- 1-2월-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.81, no.3
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 81
- Number
- 3
- ISSN
- 1550-7998
- Abstract
- We present a study of B -> X(3872)K with X(3872) decaying to D*(0)(D) over bar (0) using a sample of 657 x 10(6) B (B) over bar pairs recorded at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Both D*(0) -> D-0 gamma and D*(0) -> D-0 pi(0) decay modes are used. We find a peak of 50.1(-11.1)(+14.8) events with a mass of (3872.9(-0.4-0.5)(+0.6+0.4)) MeV/c(2), a width of d 3.9(-1.4-1.1)(+2.8+0.2)) MeV/c(2) and a product branching fraction B(B -> X(3872)K) X B(X(3872) -> D*(0)(D) over bar (0)) = (0.80 +/- 0.20 +/- 0.10) X 10(-4), where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4 sigma. The difference between the fitted mass and the D*(0)(D) over bar (0) threshold is calculated to be (1.1(-0.4-0.3)(+0.6+0.1)) MeV/c(2). We also obtain an upper limit on the product of branching fractions B(B -> Y(3940)K) X B(Y(3940) -> D*(0)(D) over bar (0) of 0.67 X 10(-4) at 90% CL.
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