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Search for the decay B+→τ+ντ

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BABAR Collaboration (Including:

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E. et al.
). (2006) Search for the decay B+→τ+ντ. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.73 (No.5). Article: 057101. ISSN 1550-7998

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Abstract

We search for the rare leptonic decay B+→τ+ντ in a sample of 232×106 BB̅ pairs collected with the BABAR detector at the SLAC PEP-II B-Factory. Signal events are selected by examining the properties of the B meson recoiling against the semileptonic decay B-→D*0ℓ-ν̅ ℓ. We find no evidence for a signal and set an upper limit on the branching fraction of B(B+→τ+ντ)<2.8×10-4 at the 90% confidence level. We combine this result with a previous, statistically independent BABAR search for B+→τ+ντ to give an upper limit of B(B+→τ+ντ)<2.6×10-4 at the 90% confidence level.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Date: March 2006
Volume: Vol.73
Number: No.5
Number of Pages: 7
Page Range: Article: 057101
Identification Number: 10.1103/PhysRevD.73.057101
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
URI: http://wrap.warwick.ac.uk/id/eprint/45840

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