Download or read book Measurement of the Decay Tau approaches Tau Pi pi written by LENA Collaboration and published by . This book was released on 1980 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Branching Ratios for the Decays tau Approaches Hadron pi 0 upsilon and tau Becomes Hadron pi 0 pi 0 upsilon written by CRYSTAL BALL Collaboration and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of the Decays Tau Rho Nu sub Tau Tau Pi Nu sub Tau and Tau K 892 Nu sub Tau Using the MARK II Detector at SPEAR written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the branching fractions for the Cabibbo favored decays tau− .-->. rho− .-->. .pi.−.nu./sub tau/ and the Cabibbo suppressed decay mode tau− .-->. K*− (892).nu./sub tau/ are presented. The energy dependence of the tautau− production cross section is obtained for the decays tau− .-->. rho−.nu./sub tau/ and these spectra agree well with the classification of the tau− as a spin-1/2 point particle. Fits to the production cross section yield a measurement of M/sub tau/ = (1787 +- 10) MeV/c2 for the tau mass. Ninety-five percent confidence upper limits for the forbidden decay tau− .-->. K*−(1430).nu./sub tau/ and the tau neutrino mass are presented.

Download or read book Evidence for the tau approaches nu rho pi Decay Mode written by PLUTO Collaboration and published by . This book was released on 1977 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of the Tau Pi Pi Pi Pi0 Pi0 Nu tau and Tau 3h 2h Nu tau Decays Using the BaBar Detector written by R. Sobie and published by . This book was released on 2005 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The {tau}{sup -} {yields} {pi}{sup -}{pi}{sup -}{pi}{sup +}{pi}{sup 0}{pi}{sup 0}{nu}{sub {tau}} and {tau}{sup -} {yields} 3h{sup -} 2h{sup +} {nu}{sub {tau}} decays have been studied using the BABAR experiment at the PEP-II e{sup +}e{sup -} storage ring. Preliminary branching fractions are given for the {tau}{sup -} {yields} {pi}{sup -}{pi}{sup -}{pi}{sup +}{pi}{sup 0}{pi}{sup 0}{nu}{sub {tau}} and to the sub-channels {tau}{sup -} {yields} {eta}{pi}{sup -} {pi}{sup 0}{nu}{sub {tau}} and {tau}{sup -} {yields} {omega}(782){pi}{sup -}{pi}{sup 0}{nu}{sub {tau}}. A preliminary upper limit is given on the branching fraction for the {phi}(1020){pi}{sup -}{pi}{sup 0}{nu}{sub {tau}} mode. In addition a preliminary measurement of the branching fraction of the {tau}{sup -} {yields} 3h{sup -}2h{sup +} {nu}{sub {tau}} decay (h = {pi}, K) is presented.

Download or read book Analysis of the Decay Tau Pi Pi Pi Ny Tau and Determination of the a 1 1260 Resonance Parameters written by ARGUS Collaboration and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of the Strange Hadronic Tau Decay Tau to K0 S Pi Nu Tau Using the BaBar Detector written by and published by . This book was released on 2006 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the decay?− → K{sub S}°?−?{sub?} (K{sub S}° →??−) using the BABAR detector is presented. Using 124.4 fb−1 of data we measure?(?− → {bar K}°?−?{sub {tau}}) = (0.830 ± 0.005(stat) ± 0.042(syst))%, which is the world's most precise measurement to date of this branching ratio, and is consistent with the current world average. This preliminary result, unlike most of the?({tau}− → {bar K}°?−?{sub {tau}}) measurements already published, is systematics dominated and so the biggest future improvement to this number should come from reducing the systematic uncertainties in the analysis. A study of the K? mass spectrum, from which the strange (K?) spectral function can be measured, reveals excess contributions above the K*(892) tail at higher K? mass. While in the past this has been thought to be due to K*(892) - K*(1410) interference, we find that the K*(1410), whose branching ratio to K? is approximately 7%, seems insufficient to explain the excess mass observed in the data. Instead, we perform a fit using a K*(892) - K*(1680) interference model and find better agreement. The discrepancy that remains could be due to an s-wave contribution to the interference that is not parameterized in the model used, and/or detector smearing that is not accounted for in our fit. We also attempt to find an s-wave contribution to the K? mass spectrum by searching for an sp-interference effect. While we find a hint that such an effect exists, we have neither the confidence in the statistics nor systematics in the higher K? mass region to announce an observation. We conclude that it would be a worthwhile study to pursue.

Download or read book Study of High Multiplicity 3 prong tau Decays at BaBar written by Mateusz Jerzy Lewczuk and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents measurements of the branching fractions for tau decays to 3-prong final states using a data set of 430 million tau lepton pairs, corresponding to an integrated luminosity of 468 fb-1, collected with the BaBar detector at the PEP-II asymmetric energy e+e- storage rings. The tau- -> (3pi)- eta nu_tau, tau^- ->pi- 2pi0 omega nu_tau and tau- -> f_1(1285) pi- nu_tau branching fractions are presented as well as a measurement of the non-resonant component of the tau- -> 3pi- 3pi0 nu_tau decay. In addition this work sets a new limit on the branching fraction of the isospin-forbidden, second-class current decay tau- -> pi- eta'(958) nu_tau.

Download or read book Measurements of the Branching Ratios for the Decays tau Hadron pi 0 neutrino and tau Hadron pi 0 pi 0 neutrino written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of the Decay tau 3 pi eta gamma ny tau with the DELPHI Detector at LEP written by Paolo Privitera and published by . This book was released on 1993 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of the Decays Tau Rho Nu written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the branching fractions for the Cabibbo favored decays tau− .-->. rho− .-->. .pi.−.nu./sub tau/ and the Cabibbo suppressed decay mode tau− .-->. K*− (892).nu./sub tau/ are presented. The energy dependence of the tautau− production cross section is obtained for the decays tau− .-->. rho−.nu./sub tau/ and these spectra agree well with the classification of the tau− as a spin-1/2 point particle. Fits to the production cross section yield a measurement of M/sub tau/ = (1787 +- 10) MeV/c2 for the tau mass. Ninety-five percent confidence upper limits for the forbidden decay tau− .-->. K*−(1430).nu./sub tau/ and the tau neutrino mass are presented.

Download or read book Measurement of the branching ratios for the decays tau hadron pi nu and tau hadron pi pi nu written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of the Decay Tau 3 Pi Eta Gama Ny Tau with the DELPHI Detector at LEP written by and published by . This book was released on 1993 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of the Decay tau Becomes Rho Pi Pi Upsilon T a u written by ARGUS Collaboration and published by . This book was released on 1990 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Measurement of the Lifetime of the Tau Pi Lepton written by DELPHI. and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Decay Tau P Ny Tau written by ARGUS Collaboration and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Decay Tau Rho Nu and Rho Pi Eta Nu written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Motivated by the question of missing exclusive branching fractions in tau decays, mostly suspected to be in one prong decays with neutrals, we have studied the decay tau .-->. rho nu in tau pair production by ee− annihilation at .sqrt.s = 3.77 GeV. The branching fraction is measured to be B(tau .-->. rho nu) = (23.0 +- 1.3 +- 1.7)% consistent with known measurements and not offering a solution to the branching ratio question. No eta signal in the .gamma gamma. mass spectrum pointing to a decay tau .-->. eta .pi. nu is obvious. An upper limit on this branching fraction is given.