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Title: Improved Limits on $$B^{0}$$ Decays to Invisible $(+gamma)$ Final States

We establish improved upper limits on branching fractions for B{sup 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 million B{bar B} pairs collected at the {Upsilon} (4S) resonance by the BABAR experiment at the PEP-II e{sup +}e{sup -} storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4 x 10{sup -5} for the branching fraction of B{sup 0} {yields} invisible and 1.7 x 10{sup -5} for the branching fraction of B{sup 0} {yields} invisible + {gamma}.
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Publication Date:
OSTI Identifier:
1043195
Report Number(s):
SLAC-PUB-15071
arXiv:1206.2543; TRN: US1203016
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys.Rev.D86:051105,2012
Research Org:
SLAC National Accelerator Laboratory (SLAC)
Sponsoring Org:
US DOE Office of Science (DOE SC);High Energy Physics (HEP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DAUGHTER PRODUCTS; FERMILAB ACCELERATOR; PHYSICS; RESONANCE; SENSITIVITY; STANDARD MODEL; STANFORD LINEAR ACCELERATOR CENTER; STORAGE RINGS Experiment-HEP,HEPEX