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Measurement of the branching fractions for B-0 -> Ds(*+)pi(-) and B-0 -> Ds*-K+ decays
- Authors
- Joshi, N. J.; Aziz, T.; Trabelsi, K.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chang, M. -C.; Chang, P.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B. G.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Das, A.; Dolezal, Z.; Drasal, Z.; Drutskoy, A.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Ha, H.; Haba, J.; Han, B. -Y.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Horii, Y.; Hoshi, Y.; Hou, W. -S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, M.; Iwasaki, Y.; Julius, T.; Kang, J. H.; Kawasaki, T.; Kim, H. J.; Kim, H. O.; Kim, J. H.; Kim, S. K.; Kim, Y. I.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kodys, P.; Kreps, M.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kuzmin, A.; Kwon, Y. -J.; Kyeong, S. -H.; Lee, M. J.; Lee, S. -H.; Li, J.; Liu, C.; Liu, Y.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Miyabayashi, K.; Miyazaki, Y.; Mizuk, R.; Mori, T.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Petric, M.; Piilonen, L. E.; Poluektov, A.; Ryu, S.; Sahoo, H.; Sakai, K.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. -G.; Shwartz, B.; Singh, J. B.; Smerkol, P.; Sokolov, A.; Solovieva, E.; Stanic, S.; Staric, M.; Stypula, J.; Sumiyoshi, T.; Taylor, G. N.; Teramoto, Y.; Uehara, S.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Watanabe, Y.; Wedd, R.; Wiechczynski, J.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zivko, T.; Zupanc, A.; Zyukova, O.
- Issue Date
- Feb-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.81, no.3, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 81
- Number
- 3
- Start Page
- 1
- End Page
- 6
- ISSN
- 1550-7998
- Abstract
- We present a study of B-0 -> D-s*(+)pi(-) and B-0 -> D-s*K--(+) decays based on a sample of 657 x 10(6) B (B) over bar events collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the branching fractions to be B(B-0 -> D-s*(+)pi(-)) = (1.75 +/- 0.34(stat) +/- 0.17(syst) +/- 0.11(B)) x 10(-5) and B(B-0 -> D-s*K--(+)) = (2.02 +/- 0.33(stat) +/- 0.18(syst) +/- 0.13(B)) x 10(-5), with significances of 6.1 and 8.0 standard deviations, respectively. The first uncertainty is statistical, the second is due to the experimental systematics, and the third is from uncertainties in the D-s(+) decay branching fractions. From our measurements, we obtain the most precise determination so far of R-D*pi, where R-D*pi is the ratio between amplitudes of the doubly Cabibbo-suppressed decay B-0 -> D*(+)pi(-) and the Cabibbo-favored B-0 -> D*(-)pi(+) decay.
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)