Study of the B→X(3872)(→D*0D̄0)K decay
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.; Križan, 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.; Petrič, 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.; Starič, 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.
2010
Abstract
We present a study of B→X(3872)K with X(3872) decaying to D*0D̄0 using a sample of 657×106 BB̄ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Both D*0→D0γ and D*0→D0π0 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/c2, a width of (3.9-1.4-1.1+2.8+0.2)MeV/c2 and a product branching fraction B(B→X(3872)K)×B(X(3872)→D*0D̄0)=(0. 80±0.20±0.10)×10-4, where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4σ. The difference between the fitted mass and the D*0D̄0 threshold is calculated to be (1.1-0.4-0.3+0.6+0.1)MeV/c2. We also obtain an upper limit on the product of branching fractions B(B→Y(3940)K) ×B(Y(3940)→D*0D̄0) of 0.67×10 -4 at 90% CL. © 2010 The American Physical Society.
Details
Title
Study of the B→X(3872)(→D*0D̄0)K decay
Author(s)
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. ; Križan, 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. ; Petrič, 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. ; Starič, 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.
Published in
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
81
Issue
3
Pages
031103
Date
2010
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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