Electroweak Radiative Corrections to {ital b} {r_arrow} {ital s}{gamma}
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Two loop electroweak corrections to b{r_arrow}s{gamma} decays are computed. Fermion and photonic loop effects are found to reduce R{equivalent_to}B(b{r_arrow}s{gamma})/B (b{r_arrow}ce{nu}) by {approximately}(8{plus_minus}2) {percent} and lead to the standard model prediction B(B{r_arrow}X{sub s}{gamma})=(3 .28{plus_minus}0.30){times}10{sup {minus}4} for inclusive B meson decays. Comparison of R{sup theory}=(3.04{plus_minus}0.25){times} 10{sup {minus}3}(1+0.10{rho}) , where {rho} is a Wolfenstein Cabibbo-Kobayashi-Maskawa parameter, with the current experimental average R{sup exp}=(2.52{plus_minus}0.52){times} 10{sup {minus}3} gives {rho}={minus}1.7{plus_minus}1.9 which is consistent with {minus}0.21{le}{rho}{le}0.27 obtained from other B and K physics constraints. {copyright} {ital 1998} {ital The American Physical Society}
- Research Organization:
- Brookhaven National Laboratory
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 641866
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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