A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS
A sample of 25000 Z0 → τ+τ- events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the τ lepton. The results are B(τ → eνν) = (17.51 ± 0.39)% and B(τ → μνν) = (17.02 ± 0.31) %. The ratio of the muon and electron couplings to the weak...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Published: |
1995
|
| _version_ | 1797066710232072192 |
|---|---|
| author | Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R Alekseev, G Allport, P Almehed, S Alvsvaag, S Amaldi, U Amato, S Andreazza, A Andrieux, M Antilogus, P Apel, W Arnoud, Y Asman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Bardin, D |
| author_facet | Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R Alekseev, G Allport, P Almehed, S Alvsvaag, S Amaldi, U Amato, S Andreazza, A Andrieux, M Antilogus, P Apel, W Arnoud, Y Asman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Bardin, D |
| author_sort | Abreu, P |
| collection | OXFORD |
| description | A sample of 25000 Z0 → τ+τ- events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the τ lepton. The results are B(τ → eνν) = (17.51 ± 0.39)% and B(τ → μνν) = (17.02 ± 0.31) %. The ratio of the muon and electron couplings to the weak charged current is measured to be gμ ge = 1.000 ± 0.013, satisfying e-μ universality. The leptonic branching fraction corrected to the value for a massless lepton, assuming e-μ universality, is found to be B(τ → lνν) = (17.50 ± 0.25)%. © 1995. |
| first_indexed | 2024-03-06T21:45:52Z |
| format | Journal article |
| id | oxford-uuid:4990882e-6d64-403e-94fe-0672e25a00ce |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:45:52Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:4990882e-6d64-403e-94fe-0672e25a00ce2022-03-26T15:32:26ZA MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4990882e-6d64-403e-94fe-0672e25a00ceSymplectic Elements at Oxford1995Abreu, PAdam, WAdye, TAgasi, EAjinenko, IAleksan, RAlekseev, GAllport, PAlmehed, SAlvsvaag, SAmaldi, UAmato, SAndreazza, AAndrieux, MAntilogus, PApel, WArnoud, YAsman, BAugustin, JAugustinus, ABaillon, PBambade, PBarao, FBarate, RBardin, DA sample of 25000 Z0 → τ+τ- events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the τ lepton. The results are B(τ → eνν) = (17.51 ± 0.39)% and B(τ → μνν) = (17.02 ± 0.31) %. The ratio of the muon and electron couplings to the weak charged current is measured to be gμ ge = 1.000 ± 0.013, satisfying e-μ universality. The leptonic branching fraction corrected to the value for a massless lepton, assuming e-μ universality, is found to be B(τ → lνν) = (17.50 ± 0.25)%. © 1995. |
| spellingShingle | Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R Alekseev, G Allport, P Almehed, S Alvsvaag, S Amaldi, U Amato, S Andreazza, A Andrieux, M Antilogus, P Apel, W Arnoud, Y Asman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Bardin, D A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS |
| title | A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS |
| title_full | A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS |
| title_fullStr | A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS |
| title_full_unstemmed | A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS |
| title_short | A MEASUREMENT OF THE TAU-LEPTONIC BRANCHING FRACTIONS |
| title_sort | measurement of the tau leptonic branching fractions |
| work_keys_str_mv | AT abreup ameasurementofthetauleptonicbranchingfractions AT adamw ameasurementofthetauleptonicbranchingfractions AT adyet ameasurementofthetauleptonicbranchingfractions AT agasie ameasurementofthetauleptonicbranchingfractions AT ajinenkoi ameasurementofthetauleptonicbranchingfractions AT aleksanr ameasurementofthetauleptonicbranchingfractions AT alekseevg ameasurementofthetauleptonicbranchingfractions AT allportp ameasurementofthetauleptonicbranchingfractions AT almeheds ameasurementofthetauleptonicbranchingfractions AT alvsvaags ameasurementofthetauleptonicbranchingfractions AT amaldiu ameasurementofthetauleptonicbranchingfractions AT amatos ameasurementofthetauleptonicbranchingfractions AT andreazzaa ameasurementofthetauleptonicbranchingfractions AT andrieuxm ameasurementofthetauleptonicbranchingfractions AT antilogusp ameasurementofthetauleptonicbranchingfractions AT apelw ameasurementofthetauleptonicbranchingfractions AT arnoudy ameasurementofthetauleptonicbranchingfractions AT asmanb ameasurementofthetauleptonicbranchingfractions AT augustinj ameasurementofthetauleptonicbranchingfractions AT augustinusa ameasurementofthetauleptonicbranchingfractions AT baillonp ameasurementofthetauleptonicbranchingfractions AT bambadep ameasurementofthetauleptonicbranchingfractions AT baraof ameasurementofthetauleptonicbranchingfractions AT barater ameasurementofthetauleptonicbranchingfractions AT bardind ameasurementofthetauleptonicbranchingfractions AT abreup measurementofthetauleptonicbranchingfractions AT adamw measurementofthetauleptonicbranchingfractions AT adyet measurementofthetauleptonicbranchingfractions AT agasie measurementofthetauleptonicbranchingfractions AT ajinenkoi measurementofthetauleptonicbranchingfractions AT aleksanr measurementofthetauleptonicbranchingfractions AT alekseevg measurementofthetauleptonicbranchingfractions AT allportp measurementofthetauleptonicbranchingfractions AT almeheds measurementofthetauleptonicbranchingfractions AT alvsvaags measurementofthetauleptonicbranchingfractions AT amaldiu measurementofthetauleptonicbranchingfractions AT amatos measurementofthetauleptonicbranchingfractions AT andreazzaa measurementofthetauleptonicbranchingfractions AT andrieuxm measurementofthetauleptonicbranchingfractions AT antilogusp measurementofthetauleptonicbranchingfractions AT apelw measurementofthetauleptonicbranchingfractions AT arnoudy measurementofthetauleptonicbranchingfractions AT asmanb measurementofthetauleptonicbranchingfractions AT augustinj measurementofthetauleptonicbranchingfractions AT augustinusa measurementofthetauleptonicbranchingfractions AT baillonp measurementofthetauleptonicbranchingfractions AT bambadep measurementofthetauleptonicbranchingfractions AT baraof measurementofthetauleptonicbranchingfractions AT barater measurementofthetauleptonicbranchingfractions AT bardind measurementofthetauleptonicbranchingfractions |