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A Search For Unconventional Tau Decays And Measurement Of The Tau Production Cross Section In E E Annihilations At Spear
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Book Synopsis A Search for Unconventional Tau Decays and Measurement of the Tau Production Cross Section in E+e- Annihilations at Spear by :
Download or read book A Search for Unconventional Tau Decays and Measurement of the Tau Production Cross Section in E+e- Annihilations at Spear written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for Unconventional Tau Decays and Measurement of the Tau Production Cross Section in E+e- Annihilations at SPEAR by : Kenneth Gregory Hayes
Download or read book A Search for Unconventional Tau Decays and Measurement of the Tau Production Cross Section in E+e- Annihilations at SPEAR written by Kenneth Gregory Hayes and published by . This book was released on 1981 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 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. by :
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 Physics Briefs written by and published by . This book was released on 1983 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Patricia Burchat Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :292 pages Book Rating :4.F/5 ( download)
Book Synopsis Decays of the Tau Lepton by : Patricia Burchat
Download or read book Decays of the Tau Lepton written by Patricia Burchat and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1986 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of the Decays Tau−. --]. Rho−. Nu by :
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.
Book Synopsis Measurement of the Decays Tau−. --]. Rho−. Nu by :
Download or read book Measurement of the Decays Tau−. --]. Rho−. Nu written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the branching fractions for the Cabibbo-favored decay tau− .-->. rho−.nu./sub tau/ and the Cabibbo-suppressed decay tau− .-->. K*−(892).nu./sub tau/ are presented. The energy dependence of the tautau− production cross section is measured with the aid of the decay tau− .-->. rho−.nu./sub tau/, which yields a measurement M/sub tau/ = (1790 +- 40) MeV. A 2 sigma upper limit for the forbidden decay tau− .-->. K*−(1430).nu./sub tau/ is also presented. 3 figures.
Book Synopsis The production and decay of tau-leptons in e_1hn+e_1hn_346 [ee] annihilation at Petra energies by :
Download or read book The production and decay of tau-leptons in e_1hn+e_1hn_346 [ee] annihilation at Petra energies written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Cross-section (p Anti-p --] Z0) X BF (Z0 --] Tau Anti-tau) at S**(1/2) by : Silke Duensing
Download or read book Measurement of Cross-section (p Anti-p --] Z0) X BF (Z0 --] Tau Anti-tau) at S**(1/2) written by Silke Duensing and published by . This book was released on 2004 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis the first measurement of {sigma}(p{bar p}) {yields} Z{sup 0} {yields} {tau}{bar {tau}} with the D0 detector at the Tevatron is presented. The tau pair candidates are recorded by the D0 detector using p{bar p} interactions at a center-of-mass energy of 1.96 TeV. Events in which one tau decays into a muon and the other tau final state is hadronic with one charged particle are selected for this analysis. The selection criteria for the hadronic tau decay are based on the tau final state, hence for two channels of one-prong taus: single charged pion ({tau}{sub {pi}}) and rho decays ({tau}{sub {rho}}). The selection is based on simple cuts on a number of discriminating variables and the cut values have been optimized for the best cross section measurement. Of hadronic tau candidates that have been reconstructed as {tau}{sub {pi}} candidates, 0.801 {+-} 0.017 {+-} 0.066 pass the selection cut; in the case of {tau}{sub {rho}} taus, the selection efficiency is 0.676 {+-} 0.009 {+-} 0.009. Of all QCD jets that are reconstructed as hadronic tau candidates, 0.0093 {+-} 0.0002 pass the {tau}{sub {pi}} selection cuts and 0.0122 {+-} 0.0002 the {tau}{sub {rho}} cuts. The cross section has been measured to be 274 {+-} 121 {+-} 40 {+-} 27 pb in the {mu}{tau}{sub {pi}} channel and 273 {+-} 40{sub -23}{sup +18} {+-} 27 pb in the {mu}{tau}{sub {rho}} channel, resulting in a combined measurement of {sigma}(p{bar p} {yields} Z{sup 0} {yields} {tau}{bar {tau}}) = 273 {+-} 38{sub -23}{sup +19} {+-} 27 pb which agrees with the SM prediction within errors. The errors are dominated by the statistical error as only the first data taken with the D0 detector in Run II was used. Due to the small set of tau candidates, the calorimeter energy scale could not yet be determined using data and this uncertainty is the largest systematic effect on the measurement. Another large contribution arises from the uncertainty of 10% on the luminosity measurement. This is expected to decrease significantly in the future. It was demonstrated that the currently available tools are sufficient to use tau leptons in the measurement of a SM process. This opens the door to the use of hadronic tau decays in the search for new particles, like SUSY particles, that decay preferentially to tau leptons in a number of models or the Higgs boson of either the SM or extended model. Doing physics at the Tevatron as the accelerator at the current energy frontier is our current best hope to find the yet elusive Higgs boson and will allow to either find proof of physics beyond the Standard Model or tighten the constraints on these models.
Book Synopsis Tau Lepton Physics - Proceedings Of The Second Workshop by : K K Gan
Download or read book Tau Lepton Physics - Proceedings Of The Second Workshop written by K K Gan and published by World Scientific. This book was released on 1993-04-08 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Heavy Neutral Particle Decays to Tau Pairs in Proton Collisions at Sqrt(s) by :
Download or read book Heavy Neutral Particle Decays to Tau Pairs in Proton Collisions at Sqrt(s) written by and published by . This book was released on 2012 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a study of the tau-pair final state in proton collisions at a center of mass energy of 7 TeV using the CMS Experiment at the CERN Large Hadron Collider. Tau leptons usually decay to hadrons and their efficient detection is very challenging in a hadronic environment. A novel tau reconstruction algorithm that maintains tau detection efficiency for low background rates was developed. Events were then selected from the CMS 2011 data sample in three T T final states depending on the tau decays: mu + T (h), e+ T (h) , e+mu where T (h) denotes a hadronic tau decay. Those events were used to measure the Z-boson production cross section where Z yields T T . A search for the Standard Model and Minimal Supersymmetric Standard Model (MSSM) Higgs bosons was also performed. No signal was observed in the Higgs search and stringent new bounds were set for the SM Higgs production and in the MSSM parameter space.
Download or read book INIS Atomindex written by and published by . This book was released on 1982 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decays of the Heavy Lepton, Tau (1785). by :
Download or read book Decays of the Heavy Lepton, Tau (1785). written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure of the weak hadronic current coupled to the tau is investigated via some of the hadronic decays of the tau. The vector current coupling is determined by measuring the tau .-->. rho .nu./sub tau/ branching ratio. The axial-vector coupling is determined by measuring the tau .-->. .pi. .nu./sub tau/ branching ratio. The Cabibbo structure of the hadronic current is established by observing the decay tau .-->. K*(890).nu./sub tau/ and measuring its branching ratio. The branching ratios for the decays tau .-->. e anti .nu./sub e/.nu./sub tau/ and tau .-->. .mu. anti .nu./sub .mu./.nu./sub tau/ are measured as a normalization for the hadronic decays and as a check on the validity of the measurements. The leptonic branching ratios agree well with previous experiments. From a kinematic fit to the pion energy spectrum in the decay tau .-->. .pi. .nu./sub tau/, an upper limit (95% confidence level) of 245 MeV is placed on the tau neutrino mass. From a simultaneous fit of the center of mass energy dependence of the tau production cross section and the pion energy spectrum in the decay tau .-->. .pi. .nu./sub tau/, the tau mass is determined to be 1.787 +- 010 GeV/c. All properties of the tau measured here are consistent with it being a sequential lepton coupled to the ordinary weak hadronic current.
Book Synopsis Precision Measurements of Tau Lepton Decays Using Inclusive Spectra by : Sterling Gray Watson
Download or read book Precision Measurements of Tau Lepton Decays Using Inclusive Spectra written by Sterling Gray Watson and published by . This book was released on 1989 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Production and Decay of Tau Pairs Produced by E+e- Annihilation at a Center of Mass Energy of 34.6 GeV. by : Glenn Welch
Download or read book Measurement of the Production and Decay of Tau Pairs Produced by E+e- Annihilation at a Center of Mass Energy of 34.6 GeV. written by Glenn Welch and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decays of the Heavy Lepton, Tau (1785) by : Craig Alan Blocker
Download or read book Decays of the Heavy Lepton, Tau (1785) written by Craig Alan Blocker and published by . This book was released on 1980 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heavy Neutral Particle Decays to Tau Pairs by : Michail Bachtis
Download or read book Heavy Neutral Particle Decays to Tau Pairs written by Michail Bachtis and published by Springer. This book was released on 2013-12-30 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this thesis spans a wide range of experimental particle physics subjects, starting from level-1 trigger electronics to the final results of the search for Higgs boson decay and to tau lepton pairs. The thesis describes an innovative reconstruction algorithm for tau decays and details how it was instrumental in providing a measurement of Z decay to tau lepton pairs. The reliability of the analysis is fully established by this measurement before the Higgs boson decay to tau lepton pairs is considered. The work described here continues to serve as a model for analysing CMS Higgs to tau leptons measurements.
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