Limits on Tau Lepton Flavor Violating Decays in Three Charged Leptons PDF Download
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Languages : en
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A search for the neutrinoless, lepton-flavor violating decay of the [tau] lepton into three charged leptons has been performed using an integrated luminosity of 468 fb−1 collected with the BABAR detector at the PEP-II collider. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1.8-3.3) x 10−8 at 90% confidence level.
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Languages : en
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Book Description
A search for the neutrinoless, lepton-flavor violating decay of the [tau] lepton into three charged leptons has been performed using an integrated luminosity of 468 fb−1 collected with the BABAR detector at the PEP-II collider. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1.8-3.3) x 10−8 at 90% confidence level.
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Languages : en
Pages : 4
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We present the most recent searches for lepton-flavor-violating (LFV)? decays in BABAR. We find no evidence of? decaying to three charged leptons or to a charged lepton and a neutral meson (K{sub S}°,?,?, K*°, {bar K}*°), and set upper limits on the corresponding branching fractions (BF) between 1.8 and 19 x 10−8 at 90% confidence level (CL).
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Languages : en
Pages : 7
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A search for the lepton-flavor-violating decay of the tau into three charged leptons has been performed using 91.5 fb−1 of data collected at an ee− center-of-mass energy of 10.58 GeV with the BABAR detector at the PEP-II storage ring. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1-3) x 10−7 at 90% confidence level.
Author: B. Aubert
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Languages : en
Pages : 7
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A search for the lepton-flavor-violating decay of the tau into three charged leptons has been performed using 91.5 fb{sup -1} of data collected at an e{sup +}e{sup -} center-of-mass energy of 10.58 GeV with the BABAR detector at the PEP-II storage ring. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1-3) x 10{sup -7} at 90% confidence level.
![Improved Limits on the Lepton Flavor Violating Decays Tau -] L V0̂ PDF](https://books.google.com/books/content/images/frontcover/8DDvwQEACAAJ?fife=w80-h100)
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Languages : en
Pages : 7
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The authors search for the neutrinoless, lepton-flavor-violating tau decays?− → l−V°, where l is an electron or muon and V° is a fector meson reconstructed as? → KK−,? →?+?−, K* → K+?−, {bar K}* → K−?+. The analysis has been performed using 451 fb−1 of data collected at an e+e− center-of-mass energy near 10.58 GeV with the BABAR detector at the PEP-II storage rings. The number of events found in the data is compatible with the background expectation, and upper limits on the branching fractions are set in the range (2.6-19) x 10−8 at the 90% confidence level.
Author: Roman Pasechnik
Publisher: Frontiers Media SA
ISBN: 2889639908
Category : Science
Languages : en
Pages : 180
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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
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Languages : en
Pages : 158
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Using approximately 350 million [tau]+[tau]- pair events recorded with the BaBar detector at the Stanford Linear Accelerator Center between 1999 and 2006, a search has been made for neutrinoless, lepton-flavor violating tau decays to three lighter leptons. All six decay modes consistent with conservation of electric charge and energy have been considered. With signal selection efficiencies of 5-12%, we obtain 90% confidence level upper limits on the branching fraction [beta]}([tau] → lll) in the range (4-8) x 10-8.
![Probing Lepton Flavour Violation Via Neutrinoless [tau]2![mu] Decays with the ATLAS Detector PDF](https://books.google.com/books/content/images/frontcover/LLcnnQAACAAJ?fife=w80-h100)
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Languages : en
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This article presents the sensitivity of the ATLAS experiment to the lepton-flavour-violating decays of [tau]2![mu]. A method utilising the production of [tau] leptons via W2!tau][nu] decays is used. This method is applied to the sample of 20.3 fb-1 of pp collision data at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC in 2012. Lastly, no event is observed passing the selection criteria, and the observed (expected) upper limit on the [tau] lepton branching fraction into three muons, Br([tau]2![mu]), is 3.76×10-7 (3.94×10-7) at 90 % confidence level.
Author: Hesheng Chen
Publisher: World Scientific
ISBN: 9814481270
Category : Science
Languages : en
Pages : 1424
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Book Description
The 32nd International Conference on High Energy Physics belongs to the Rochester Conference Series, and is the most important international conference in 2004 on high energy physics. The proceedings provide a comprehensive review on the recent developments in experimental and theoretical particle physics. The latest results on Top, Higgs search, CP violation, neutrino mixing, pentaquarks, heavy quark mesons and baryons, search for new particles and new phenomena, String theory, Extra dimension, Black hole and Lattice calculation are discussed extensively. The topics covered include not only those of main interest to the high energy physics community, but also recent research and future plans. Contents: Neutrino Masses and MixingsQuark Matter and Heavy Ion CollisionsParticle Astrophysics and CosmologyElectroweak PhysicsQCD Hard InteractionsQCD Soft InteractionsComputational Quantum Field TheoryCP Violation, Rare Kaon Decay and CKMR&D for Future Accelerator and DetectorHadron Spectroscopy and ExoticsHeavy Quark Mesons and BaryonsBeyond the Standard ModelString Theory Readership: Experimental and theoretical physicists and graduate students in the fields of particle physics, nuclear physics, astrophysics and cosmology.Keywords:High Energy Physics;Particle Physics;Electroweak;QCD;Heavy Quark;Neutrino;Particle Astrophysics;Hadron Spectroscopy;CP Violation;Quark Matter;Future Accelerator
Author: Patricia Burchat
Publisher: Ann Arbor, Mich. : University Microfilms International
ISBN:
Category : Leptons (Nuclear physics)
Languages : en
Pages : 292
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