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Search for the rare leptonic decay B-->tau(-)nu(tau)

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, JM; Hicheur, A; Karyotakis, Y; ... Neal, H; + view all (2005) Search for the rare leptonic decay B-->tau(-)nu(tau). PHYS REV LETT , 95 (4) , Article 041804. 10.1103/PhysRevLett.95.041804. Green open access

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Abstract

We present a search for the decay B- -> tau(-)<(nu)over bar >(tau) in a sample of 88.9 x 10(6) B (B) over bar pairs recorded with the BABAR detector at the Stanford Linear Accelerator Center B factory. One of the two B mesons from the Upsilon(4S) is reconstructed in a hadronic or a semileptonic final state, and the decay products of the other B in the event are analyzed for consistency with a B- -> tau(-)<(nu)over bar >(tau) decay. We find no evidence of a signal and set an upper limit on the branching fraction of B((B) over bar -> tau(-)<(nu)over bar >(tau)) < 4.2 x 10(-4) at the 90% confidence level.

Type: Article
Title: Search for the rare leptonic decay B-->tau(-)nu(tau)
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.95.041804
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.95.041804
Language: English
Additional information: © 2005 The American Physical Society
Keywords: DETECTOR, PHYSICS, LIMIT
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303726
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