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    First observation of tau->3 pi eta nu(tau) and tau->f(1)pi nu(tau) decays

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    Issue Date
    1997-09
    Author
    Ammar, Raymond G.
    Baringer, Philip S.
    Bean, Alice
    Besson, David Zeke
    Coppage, Don
    Darling, C.
    Davis, Robin E. P.
    Hancock, N.
    Kotov, S.
    Kravchenko, I.
    Kwak, Nowhan
    Publisher
    AMERICAN PHYSICAL SOC
    Type
    Article
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    Abstract
    We have observed new channels for tau decays with an eta in the final state. We study 3-prong tau decays, using the eta --> gamma gamma and eta --> 3 pi(0) decay modes and 1-prong decays with two pi(0)'s using the eta --> gamma channel. The measured branching fractions B(tau(-)-->pi(-)pi(-)pi(+)eta nu(tau)) = (3.4-(0.6)(0.5) +/- 0.6) x 10(-4) and B(tau(-) --> pi(-)2 pi(0) eta nu<(tau>)) = (1.4 +/- 0.6 +/- 0.3) x 10(-4). We observe clear evidence for f(1) --> eta pi pi substructure and measure B(pi(-) --> F-1 pi(-)nu(tau)) = (5.8(-1.3)(+1.4) +/- 1.8) x 10(-4). We have also searched for eta'(958) production and obtain 90% C.L. upper limits B(tau(-) --> pi(-)eta'nu(tau)) < 7.4 x 10(-5) 10-5 and B(tau(-) --> pi(-) --> pi(-)pi(0) eta'nu(tau)) < 8.0 x 10(-5).
    URI
    http://hdl.handle.net/1808/1388
    Collections
    • Center for Russian, East European, and Eurasian Studies Scholarly Publications [546]
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    Bergfeld, T, Eisenstein, BI, et al. First observation of tau->3 pi eta nu(tau) and tau->f(1)pi nu(tau) decays. PHYSICAL REVIEW LETTERS. September 1997. 79(13) : 2406-2410

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    KU Libraries
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    KU Libraries
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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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