BaBar Collaboration (Including: Gershon, T. J., Harrison, P. F. and Latham, Thomas). (2013) Search for the rare decays B→πℓ+ℓ- and B0→ηℓ+ℓ-. Physical Review D - Particles, Fields, Gravitation and Cosmology , Volume 88 (Number 3). Article number 032012. doi:10.1103/PhysRevD.88.032012 ISSN 1550-7998.

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Abstract

We present the results of a search for the rare flavor-changing neutral-current decays B→πℓ+ℓ- (π=π±, π0 and ℓ=e, μ) and B0→ηℓ +ℓ- using a sample of e+e -→Υ(4S)→BB̄ decays corresponding to 428 fb -1 of integrated luminosity collected by the BABAR detector. No significant signal is observed, and we set an upper limit on the isospin and lepton-flavor averaged branching fraction of B(B→πℓ+ℓ -)<5.9×10-8 and a lepton-flavor averaged upper limit of B(B0→ηℓ+ℓ-)<6.4×10 -8, both at the 90% confidence level. We also report 90% confidence level branching fraction upper limits for the individual modes B +→π+e+e-, B0→π0e+e-, B+→π+μ +μ-, B0→π0μ+μ-, B0→ηe+e-, and B0→ημ+μ -.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review D - Particles, Fields, Gravitation and Cosmology
Publisher:	American Physical Society
ISSN:	1550-7998
Official Date:	27 August 2013
Dates:	Date Event 27 August 2013 Published 31 March 2013 Submitted
Volume:	Volume 88
Number:	Number 3
Article Number:	Article number 032012
DOI:	10.1103/PhysRevD.88.032012
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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