Improved limits on B[superscript 0] decays to invisible (+γ) final states
Name
Lees-2012-Improved limits on B-0 decays.pdf
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215.72 KB
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Checksum (MD5)
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Cowan, Ray F
Date Issued
September 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Improved limits on B[superscript 0] decays to invisible (+γ) final states.” Physical Review D 86.5 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We establish improved upper limits on branching fractions for B[superscript 0] decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471×10[superscript 6] BB̅ pairs collected at the Υ(4S) resonance by the BABAR experiment at the PEP-II e[superscript +]e[superscript -] storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4×10-5 for the branching fraction of B[superscript 0]→invisible and 1.7×10[superscript -5] for the branching fraction of B[superscript 0]→invisible+γ.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.86.051105
