Study of High-Multiplicity Three-Prong and Five-Prong τ Decays at BABAR

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Study of High-Multiplicity Three-Prong and Five-Prong τ Decays at BABAR

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Title: Study of High-Multiplicity Three-Prong and Five-Prong τ Decays at BABAR
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Garra Tico, J.;
Grauges, E.;
Palano, A.;
Eigen, G.;
Izen, Joseph M.;
Lou, Xinchou;
BaBar Collaboration
Format: Text
Item Type: Article
Keywords: Branching fractions (Nuclear physics)
Leptons (Nuclear physics)
Abstract: We present measurements of the branching fractions of three-prong and five-prong τ decay modes using a sample of 430million τ lepton pairs, corresponding to an integrated luminosity of 468fb -1, collected with the BABAR detector at the PEP-II asymmetric-energy e +e - storage rings at SLAC National Accelerator Laboratory. The τ -→(3π) -ην τ, τ -→(3π) -ων τ, and τ -→π -f 1(1285)ν τ branching fractions are presented, as well as a new limit on the branching fraction of the second-class current decay τ -→π -η ′(958)ν τ. We search for the decay mode τ -→K -η ′(958) ν τ and for five-prong decay modes with kaons, and place the first upper limits on their branching fractions. © 2012 American Physical Society.
Publisher: Amer Physical Soc
ISSN: 1550-7998
Source: Physical Review D - Particles, Fields, Gravitation and Cosmology
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevD.86.092010
Persistent Link: http://hdl.handle.net/10735.1/3169
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, J. Garra Tico, et al. 2012. "Study of high-multiplicity three-prong and five-prong τ decays at BABAR." Physical Review D - Particles, Fields, Gravitation and Cosmology 86(9), doi:10.1103/PhysRevD.86.092010
Terms of Use: © 2012 American Physical Society

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