Search for the Radiative Decays B→ργ and B[superscript 0]→ωγ
Name
Aubert-2004-Search for the Radiative Decays.pdf
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Author(s)
Sciolla, Gabriella
Yamamoto, R. K.
Cowan, Ray F
Taylor, Frank E
Alternative Title
Search for the Radiative Decays B→ργ and B0→ωγ
Date Issued
March 2004
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aubert, B. et al. “Search for the Radiative Decays B→ργ and B0→ωγ.” Physical Review Letters 92.11 (2004): Web. 18 May 2012. © 2004 American Physical Society
Version
Final published version
Abstract
A search of the exclusive radiative decays B→ρ(770)γ and B[superscript 0]→ω(782)γ is performed on a sample of about 84×10[superscript 6] BB̅ events collected by the BABAR detector at the SLAC PEP-II asymmetric-energy e[superscript +]e[superscript -] storage ring. No significant signal is seen in any of the channels. We set upper limits on the branching fractions B of B(B[superscript 0]→ρ[superscript 0]γ)<1.2×10[superscript -6], B(B[superscript +]→ρ[superscript +]γ)<2.1×10[superscript -6], and B(B[superscript 0]→ωγ)<1.0×10[superscript -6] at 90% confidence level (C.L.). Using the assumption that Γ(B→ργ)=Γ(B[superscript +]→ρ[superscript +]γ)=2×Γ(B[superscript 0]→ρ[superscript 0]γ), we find the combined limit B(B→ργ)<1.9×10[superscript -6], corresponding to B(B→ργ)/B(B→K[superscript *]γ)<0.047 at 90% C.L.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.92.111801
