We report measurements of radiative B decays with Kηγ final states, using a data sample of 253 fb-1 recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. We observe B+→K+ηγ for the first time with a branching fraction of (8.4±1.5(stat)-0.9 +1.2(syst))×10-6 for MKη<2.4 GeV/c2, and find evidence of B0→K 0ηγ. We also search for B→K3*(1780) γ.
|Number of pages||8|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2005 Mar 17|
Bibliographical noteFunding Information:
We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science (JSPS); the Australian Research Council and the Australian Department of Education, Science and Training; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy. S.N. is supported by KAKENHI (16740153) by JSPS.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics