Search for B̄0→Λc+Λ̄c- decay at Belle

Uchida, Y.; Ozaki, H.; Kichimi, H.; Adachi, I.; Aihara, H.; Arinstein, K.; Aushev, T.; Bakich, A.M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bhardwaj, V.; Bitenc, U.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T.E.; Chang, M.-C.; Chao, Y.; Chen, A.; Chen, W.T.; Cheon, B.G.; Chistov, R.; Cho, I.-S.; Choi, Y.; Dalseno, J.; Dash, M.; Drutskoy, A.; Eidelman, S.; Gabyshev, N.; Golob, B.; Ha, H.; Haba, J.; Hayasaka, K.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y.B.; Hyun, H.J.; Ikado, K.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, M.; Iwasaki, Y.; Kah, D.H.; Kaji, H.; Kang, J.H.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kim, Y.J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kuo, C.C.; Kuzmin, A.; Kwon, Y.-J.; Lee, J.S.; Lee, M.J.; Lee, S.E.; Lesiak, T.; Lin, S.-W.; Liventsev, D.; Mandl, F.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G.R.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S.L.; Pakhlov, P.; Pakhlova, G.; Park, C.W.; Park, H.; Peak, L.S.; Pestotnik, R.; Piilonen, L.E.; Sakai, Y.; Schneider, O.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shen, C.P.; Shibuya, H.; Shiu, J.-G.; Shwartz, B.; Singh, J.B.; Somov, A.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Suzuki, S.Y.; Takasaki, F.; Tanaka, M.; Taylor, G.N.; Teramoto, Y.; Tikhomirov, I.; Ueno, K.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Vervink, K.; Wang, C.C.; Wang, C.H.; Wang, M.-Z.; Wang, P.; Watanabe, Y.; Wedd, R.; Won, E.; Yamashita, Y.; Yamauchi, M.; Zhang, C.C.; Zhang, Z.P.; Zhulanov, V.; Zupanc, A.; Zyukova, O.

doi:10.1103/PhysRevD.77.051101

Search for B̄0→Λc+Λ̄c- decay at Belle

Uchida, Y. ; Ozaki, H. ; Kichimi, H. ; Adachi, I.[...]

We search for the doubly charmed baryonic decay B̄0→Λ c+Λ̄c-, in a data sample of 520×106 BB̄ events accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no significant signal and set an upper limit of B(B̄0→Λc+Λ̄c-)<6.2×10-5 at 90% confidence level. The result is significantly below a naive extrapolation from B(B-→Ξc0Λ̄c-) assuming a simple Cabibbo-suppression factor of |Vcd/Vcs|2. The small branching fraction may be attributed to a suppression due to the large momentum of the baryonic decay products, which has been observed in other charmed baryonic two-body B decays. © 2008 The American Physical Society.

Published in:

Physical Review D - Particles, Fields, Gravitation and Cosmology, 77, 5, null

Year:

2008

DOI:

10.1103/PhysRevD.77.051101

Other identifiers:

Scopus: 2-s2.0-41149102991
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Laboratories:

LPHE

Record appears in:

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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