Search for B-s(0) -˃ gamma gamma and a measurement of the branching fraction for B-s(0) -˃ phi gamma
- Title
- Search for B-s(0) -˃ gamma gamma and a measurement of the branching fraction for B-s(0) -˃ phi gamma
- Author
- 천병구
- Issue Date
- 2015-01
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v. 91, NO 1, Page. 11101-11101
- Abstract
- We search for the decay B-s(0) -˃ gamma gamma and measure the branching fraction for B-s(0) -˃ phi gamma using 121.4 fb(-1) of data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The B-s(0) -˃ phi gamma branching fraction is measured to be (3.6 +/- 0.5(stat) +/- 0.3(syst) +/- 0.6(f(s))) x 10(-5), where f(s) is the fraction of B-s(()*())(B) over barB(s)(()*()) in b (b) over bar events. Our result is in good agreement with the theoretical predictions as well as with a recent measurement from LHCb. We observe no statistically significant signal for the decay B-s(0) -˃ gamma gamma and set a 90% confidence- level upper limit on its branching fraction at 3.1 x 10(-6). This constitutes a significant improvement over the previous result.
- URI
- http://arxiv.org/abs/1411.7771http://hdl.handle.net/20.500.11754/21584
- ISSN
- 2470-0010
- DOI
- 10.1103/PhysRevD.91.011101
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML