Precision Measurements of Tau Lepton Decays Using Inclusive Spectra

Precision Measurements of Tau Lepton Decays Using Inclusive Spectra PDF Author: Sterling Gray Watson
Publisher:
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 286

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Precision Measurements of Tau Lepton Decays Using Inclusive Spectra

Precision Measurements of Tau Lepton Decays Using Inclusive Spectra PDF Author: Sterling Gray Watson
Publisher:
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 286

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Precision Measurements of Tau Lepton Decays

Precision Measurements of Tau Lepton Decays PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 293

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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.

Tau Lepton Physics - Proceedings Of The Second Workshop

Tau Lepton Physics - Proceedings Of The Second Workshop PDF 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.

Review of Tau Lepton Decays

Review of Tau Lepton Decays PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3

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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.

Standard Theory Of Particle Physics, The: Essays To Celebrate Cern's 60th Anniversary

Standard Theory Of Particle Physics, The: Essays To Celebrate Cern's 60th Anniversary PDF Author: Luciano Maiani
Publisher: World Scientific
ISBN: 9814733520
Category : Science
Languages : en
Pages : 484

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Book Description
'The editors make a good point in claiming the time has come to upgrade the Standard Model into the ‘Standard Theory’ of particle physics, and I think this book deserves a place in the bookshelves of a broad community, from the scientists and engineers who contributed to the progress of high-energy physics to younger physicists, eager to learn and enjoy the corresponding inside stories.'Carlos LourençoCERN CourierThe book gives a quite complete and up-to-date picture of the Standard Theory with an historical perspective, with a collection of articles written by some of the protagonists of present particle physics. The theoretical developments are described together with the most up-to-date experimental tests, including the discovery of the Higgs Boson and the measurement of its mass as well as the most precise measurements of the top mass, giving the reader a complete description of our present understanding of particle physics.

Precision Measurements in Muon and Tau Decays

Precision Measurements in Muon and Tau Decays PDF Author: W. Fetscher
Publisher:
ISBN:
Category :
Languages : en
Pages : 49

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Decays of the Tau Lepton

Decays of the Tau Lepton PDF Author: Patricia Burchat
Publisher: Ann Arbor, Mich. : University Microfilms International
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 292

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Dissertation Abstracts International

Dissertation Abstracts International PDF Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 924

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Measurement of the Inclusive Electron Cross-Section from Heavy-Flavour Decays and Search for Compressed Supersymmetric Scenarios with the ATLAS Experiment

Measurement of the Inclusive Electron Cross-Section from Heavy-Flavour Decays and Search for Compressed Supersymmetric Scenarios with the ATLAS Experiment PDF Author: Moritz Backes
Publisher: Springer
ISBN: 331907136X
Category : Science
Languages : en
Pages : 268

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Book Description
The first part of this thesis presents the measurement of the inclusive cross-section for electron production from heavy-flavour decays in the electron transverse momentum range 7 GeV

Precision Measurement of the Tau Lepton Mass and the Mass Difference of the Positively and Negatively Charged Tau Leptons at BaBar

Precision Measurement of the Tau Lepton Mass and the Mass Difference of the Positively and Negatively Charged Tau Leptons at BaBar PDF Author: Parker Lund
Publisher:
ISBN:
Category :
Languages : en
Pages : 386

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