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Author: Sterling Gray Watson
Publisher:
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 286
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Book Description
Author: Sterling Gray Watson
Publisher:
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 286
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 293
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Book Description
Using data collected with the BABAR detector at the SLAC PEP-II electron-positron storage ring operating at a centre-of-mass energy near 10.58 GeV, the branching fractions B([tau]- 2![pi]-[pi]-[pi]+[nu][tau]) =(8.83±0.01±0.13)%, B([tau]- 2!K-[pi]-[pi]+[nu][tau]) =(0.273± 0.002 ± 0.009)%, B([tau]- 2!K-[pi]-K+[nu][tau]) =(0.1346 ± 0.0010 ± 0.0036)%, and B([tau]- 2!K-K-K+[nu][tau]) =(1.58 ± 0.13 ± 0.12) × 10-5 are measured where the uncertainties are statistical and systematic, respectively. The invariant mass distribution for the [tau]- 2![pi]-[pi]-[pi]+[nu][tau], [tau]- 2!K-[pi]-[pi]+[nu][tau], [tau]- 2!K-[pi]-K+[nu][tau] and [tau]- 2!K-K-K+[nu][tau] decays are unfolded to correct for detector effects. A measurement of B([tau]- 2![phi][pi]-[nu][tau]) =(3.42±0.55±0.25)×10-5, a measurement of B([tau]- 2![phi]K-[nu][tau]) =(3.39±0.20±0.28)× 10-5 and an upper limit on B([tau]- 2!K-K-K+[nu][tau] [ex.[phi]]) d"2.5 × 10-6@90%CL are determined from a binned maximum likelihood fit of the [tau]- 2!K-[pi]-K+[nu][tau] and [tau]- 2!K-K-K+[nu][tau] K+K- invariant mass distributions. The branching ratio B([tau]-2!-[nu][tau])/ B([tau]-2!pi]-[nu][tau]) is measured to be (6.531±0.056±0.093)×10-2 from which.
Author:
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ISBN:
Category :
Languages : en
Pages : 3
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Book Description
Measurements of the [tau] decay modes are reviewed and compared with the predictions of the Standard Model. While the agreement is generally good, the status of the 1-prong puzzle'' remains controversial and a discrepancy between the measured leptonic branching fractions and the [tau] lifetime persists. Prospects for precision measurements at a Tau-Charm Factory are also reviewed. 20 refs., 2 tabs.
Author: W. Fetscher
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
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Author: Parker Lund
Publisher:
ISBN:
Category :
Languages : en
Pages : 386
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Author: Michel Davier
Publisher: Atlantica Séguier Frontières
ISBN: 9782863320976
Category : Leptons (Nuclear physics)
Languages : en
Pages : 590
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Book Description
![Review of Recent Results on the [tau] Lepton PDF](https://books.google.com/books/content/images/frontcover/McIqngAACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages :
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This is a review of the recent results on the [tau] lepton. The results include precise measurements of the lifetime, measurements of the decay [tau]/sup /minus// .-->. .pi./sup /minus//2.pi.°.nu./sub [tau]/ with much improved precision, limits on decay modes containing [eta] mesons, including the second-class-current decay /tau//sup /minus// .-->. .pi./sup /minus//[eta].nu./sub /tau//, and limits on exotic decay modes. The implications of these results on the discrepancy in the one-charged-particle decay modes are discussed. 43 refs., 4 figs., 2 tabs.
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Category :
Languages : en
Pages :
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This is a review of new results on the tau lepton. The results include precise measurements of the lifetime, measurements of the decay tau− .-->. .pi.−2.pi.°nu/sub tau/ with much improved precision, and limits on decay modes containing eta mesons, including the second-class-current decay tau− .-->. .pi.−eta nu/sub tau/. The implications of these new results on the discrepancy in the one-charged-particle decay modes are discussed. 52 refs., 6 figs., 2 tabs.
Author: K K Gan
Publisher: World Scientific
ISBN: 9814553433
Category :
Languages : en
Pages : 590
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Book Description
The II International Workshop on Tau Lepton Physics was held in Ohio, USA in September 1992. Its purpose is to gather the experts on tau lepton physics to examine the current understanding of the tau lepton physics and to assess future prospects. A particular emphasis of the Workshop was a detailed examination of the '1-prong problem': the discrepancy between the inclusive measurement of one-charged-particle decay branching ratio and the sum of the exclusive decays. The Workshop also stimulated new ideas on tests of the Standard Model using the third generation lepton and assessed the future prospects of the lepton physics.
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Languages : de
Pages :
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