Measurement of the (B)over-bar -˃ X-s gamma branching fraction with a sum of exclusive decays

Title
Measurement of the (B)over-bar -˃ X-s gamma branching fraction with a sum of exclusive decays
Authors
천병구
Keywords
BELLE DETECTOR
Issue Date
2015-03
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 91, NO 5, Page. 52004-52004
Abstract
We use 772 x 10(6) B (B) over bar meson pairs collected at the gamma(4S) resonance with the Belle detector to measure the branching fraction for (B) over bar -˃ X-s gamma Our measurement uses a sum-of-exclusives approach in which 38 of the hadronic final states with strangeness equal to +1, denoted by X-s, are reconstructed. The inclusive branching fraction for M-Xs ˂ 2.8 GeV/c(2), which corresponds to a minimum photon energy of 1.9 GeV, is measured to be B(˂(B)over bar˃ -˃ X-s gamma) = (3.51 +/- 0.17 +/- 0.33) x 10(-4), where the first uncertainty is statistical and the second is systematic.
URI
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.052004http://hdl.handle.net/20.500.11754/22935
ISSN
2470-0010; 2470-0029
DOI
http://dx.doi.org/10.1103/PhysRevD.91.052004
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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