Measurement of the branching fractions and the invariant mass distributions for {tau}{sup -{yields}}h{sup -}h{sup +}h{sup -{nu}}{sub {tau}}decays

Journal Article · Tue Jun 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.113007· OSTI ID:21407943

Lee, M J; Kim, S K; Ryu, S ^[1]; Aihara, H; Iwasaki, M ^[2]; Arinstein, K; Aulchenko, V; Bondar, A; Eidelman, S; Epifanov, D; Gabyshev, N; Garmash, A; Kuzmin, A; Poluektov, A; Shebalin, V; Shwartz, B; Usov, Y; Vinokurova, A; Zhilich, V; Zhulanov, V ^[3]

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1. Seoul National University, Seoul (Korea, Republic of)
2. Department of Physics, University of Tokyo, Tokyo (Japan)
3. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

We present a study of {tau}{sup -{yields}{pi}-{pi}+{pi}-{nu}}{sub {tau}}, {tau}{sup -{yields}}K{sup -{pi}+{pi}-{nu}}{sub {tau}}, {tau}{sup -{yields}}K{sup -}K{sup +{pi}-{nu}}{sub {tau}}, and {tau}{sup -{yields}}K{sup -}K{sup +}K{sup -{nu}}{sub {tau}} decays using a 666 fb{sup -1} data sample collected with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider at and near a center-of-mass energy of 10.58 GeV. The branching fractions are measured to be B({tau}{sup -{yields}{pi}-{pi}+{pi}-{nu}}{sub {tau}})=(8.42{+-}0.00{sub -0.25}{sup +0.26})x10{sup -2}, B({tau}{sup -{yields}}K{sup -{pi}+{pi}-{nu}}{sub {tau}})=(3.30{+-}0.01{sub -0.17}{sup +0.16})x10{sup -3}, B({tau}{sup -{yields}}K{sup -}K{sup +{pi}-{nu}}{sub {tau}})=(1.55{+-}0.01{sub -0.05}{sup +0.06})x10{sup -3}, and B({tau}{sup -{yields}}K{sup -}K{sup +}K{sup -{nu}}{sub {tau}})=(3.29{+-}0.17{sub -0.20}{sup +0.19})x10{sup -5}, where the first uncertainty is statistical and the second is systematic. These branching fractions do not include contributions from modes in which a {pi}{sup +{pi}-} pair originates from a K{sub S}{sup 0} decay. We also present the unfolded invariant mass distributions for these decays.

• OSTI ID: 21407943
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 11; Other Information: DOI: 10.1103/PhysRevD.81.113007; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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GEV RANGE 01-10
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KAONS NEUTRAL SHORT-LIVED
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