Observation of Bs0→Ds*-π+ and Bs0→Ds(*) -ρ+ and measurement of the Bs0→Ds*-ρ+ longitudinal polarization fraction
Louvot, R.; Schneider, O.; Aushev, T.; Arinstein, K.; Bakich, A.M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T.E.; Chang, P.; Chao, Y.; Chen, A.; Chen, K.-F.; Chen, P.; Cheon, B.G.; Chiang, C.-C.; Cho, I.-S.; Choi, Y.; Danilov, M.; Dash, M.; Drutskoy, A.; Eidelman, S.; Goldenzweig, P.; Golob, B.; Ha, H.; Haba, J.; Hara, T.; 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.; Joshi, N.J.; Kah, D.H.; Kang, J.H.; Kapusta, P.; Katayama, N.; Kawasaki, T.; Kiesling, C.; Kim, H.J.; Kim, H.O.; Kim, J.H.; Kim, M.J.; Kim, Y.J.; Kinoshita, K.; Ko, B.R.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kumita, T.; Kwon, Y.-J.; Kyeong, S.-H.; Lange, J.S.; Lee, M.J.; Lee, S.-H.; Li, J.; Liu, C.; Matyja, A.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G.B.; Nakao, M.; Nakazawa, H.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ohshima, T.; Okuno, S.; Olsen, S.L.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, H.; Park, H.K.; Pestotnik, R.; Petrič, M.; Piilonen, L.E.; Poluektov, A.; Prim, M.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schwanda, C.; Schwartz, A.J.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shebalin, V.; Shen, C.P.; Shiu, J.-G.; Singh, J.B.; Smerkol, P.; Sokolov, A.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Taylor, G.N.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Varner, G.; Varvell, K.E.; Vervink, K.; Wang, C.H.; Wang, M.-Z.; Wang, P.; Wicht, J.; Won, E.; Yabsley, B.D.; Yamashita, Y.; Zhang, Z.P.; Zivko, T.; Zyukova, O.
2010
Abstract
First observations of the Bs0→Ds*-π+, Bs0→Ds-ρ+ and Bs0→Ds*-ρ+ decays are reported together with measurements of their branching fractions: B(Bs0→Ds*-π+)=[2.4-0.4+0.5(stat)±0.3(syst) ±0.4(fs)]×10-3, B(Bs0→Ds-ρ+)=[8.5-1. 2+1.3(stat)±1.1(syst)±1.3(fs)]×10-3 and B(Bs0→Ds*-ρ+)=[11.9-2.0+2.2(stat)±1.7(syst) ±1.8(fs)]×10-3 (fs=NBs(*)B̄s(*)/ Nbb̄). From helicity-angle distributions, we measured the longitudinal polarization fraction in Bs0→Ds*-ρ+ decays to be fL(Bs0→Ds*-ρ+)=1.05-0.10+0.08(stat)-0.04+0.03(syst). These results are based on a 23.6fb-1 data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e - collider. © 2010 The American Physical Society.
Details
Title
Observation of Bs0→Ds*-π+ and Bs0→Ds(*) -ρ+ and measurement of the Bs0→Ds*-ρ+ longitudinal polarization fraction
Author(s)
Louvot, R. ; Schneider, O. ; Aushev, T. ; Arinstein, K. ; Bakich, A.M. ; Balagura, V. ; Barberio, E. ; Bay, A. ; Belous, K. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Browder, T.E. ; Chang, P. ; Chao, Y. ; Chen, A. ; Chen, K.-F. ; Chen, P. ; Cheon, B.G. ; Chiang, C.-C. ; Cho, I.-S. ; Choi, Y. ; Danilov, M. ; Dash, M. ; Drutskoy, A. ; Eidelman, S. ; Goldenzweig, P. ; Golob, B. ; Ha, H. ; Haba, J. ; Hara, T. ; 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. ; Joshi, N.J. ; Kah, D.H. ; Kang, J.H. ; Kapusta, P. ; Katayama, N. ; Kawasaki, T. ; Kiesling, C. ; Kim, H.J. ; Kim, H.O. ; Kim, J.H. ; Kim, M.J. ; Kim, Y.J. ; Kinoshita, K. ; Ko, B.R. ; Kodyš, P. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kumita, T. ; Kwon, Y.-J. ; Kyeong, S.-H. ; Lange, J.S. ; Lee, M.J. ; Lee, S.-H. ; Li, J. ; Liu, C. ; Matyja, A. ; McOnie, S. ; Miyabayashi, K. ; Miyata, H. ; Miyazaki, Y. ; Mohanty, G.B. ; Nakao, M. ; Nakazawa, H. ; Nishida, S. ; Nishimura, K. ; Nitoh, O. ; Ohshima, T. ; Okuno, S. ; Olsen, S.L. ; Pakhlov, P. ; Pakhlova, G. ; Palka, H. ; Park, H. ; Park, H.K. ; Pestotnik, R. ; Petrič, M. ; Piilonen, L.E. ; Poluektov, A. ; Prim, M. ; Röhrken, M. ; Ryu, S. ; Sahoo, H. ; Sakai, Y. ; Schwanda, C. ; Schwartz, A.J. ; Senyo, K. ; Sevior, M.E. ; Shapkin, M. ; Shebalin, V. ; Shen, C.P. ; Shiu, J.-G. ; Singh, J.B. ; Smerkol, P. ; Sokolov, A. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Taylor, G.N. ; Teramoto, Y. ; Trabelsi, K. ; Uehara, S. ; Unno, Y. ; Uno, S. ; Varner, G. ; Varvell, K.E. ; Vervink, K. ; Wang, C.H. ; Wang, M.-Z. ; Wang, P. ; Wicht, J. ; Won, E. ; Yabsley, B.D. ; Yamashita, Y. ; Zhang, Z.P. ; Zivko, T. ; Zyukova, O.
Published in
Physical Review Letters
Volume
104
Issue
23
Pages
231801
Date
2010
Keywords
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Laboratories
LPHE
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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
Work produced at EPFL
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Peer-reviewed publications
Work produced at EPFL
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Record creation date
2010-11-05