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Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma
Belle Collaboration
2015
发表期刊PHYSICAL REVIEW D
卷号91期号:1页码:11101
摘要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.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.91.011101
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000349413900001
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228154
专题实验物理中心
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Belle Collaboration. Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma[J]. PHYSICAL REVIEW D,2015,91(1):11101.
APA Belle Collaboration.(2015).Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma.PHYSICAL REVIEW D,91(1),11101.
MLA Belle Collaboration."Search for B-s(0) -> gamma gamma and a measurement of the branching fraction for B-s(0) -> phi gamma".PHYSICAL REVIEW D 91.1(2015):11101.
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