We have measured the branching fraction of the inclusive radiative B meson decay B → Xsγ to be Br(B → Xsγ) = (3.36 ± 0.53(stat) ± 0.42(sys)-0.54 +0.54(th)) × 10-4. The result is based on a sample of 6.07 × 106 B B̄ events collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric e+e- storage ring.
|Number of pages||8|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2001 Jul 5|
Bibliographical noteFunding Information:
We gratefully acknowledge the efforts of the KEKB group in providing us with excellent luminosity and running conditions and the help with our computing and network systems provided by members of the KEK computing research center. We wish to thank M. Neubert and A. Ali for helpful suggestions on the modelling of the B→X s γ MC. We thank the staffs of KEK and collaborating institutions for their contributions to this work, and acknowledge support from the Ministry of Education, Science, Sports and Culture of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Industry, Science and Resources; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the Basic Science program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 17017; the Ministry of Science and Technology of Russian Federation; the National Science Council and the Ministry of Education of Taiwan; the Japan–Taiwan Cooperative Program of the Interchange Association; and the U.S. Department of Energy.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics