A precise measurement of the tau lepton lifetime
The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Two measurements of one-prong decays are combined, accounting for correlations, giving a result ofττ = 291.8 ± 3.3 (stat.) ± 2.0(sys.) fs while the decay length distribution of three-prong decays gives...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1996
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| _version_ | 1797068889642762240 |
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| 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 | The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Two measurements of one-prong decays are combined, accounting for correlations, giving a result ofττ = 291.8 ± 3.3 (stat.) ± 2.0(sys.) fs while the decay length distribution of three-prong decays gives the result ττ = 286.7 ± 4.9 (stat.) ± 3.3 (sys.) fs. Combining the results presented here with previous DELPHI measurements, we get ττ = 291.4 ± 3.0 fs and find that the ratio of the coupling constant for tau decay relative to that for muon decay is 0.990 ± 0.009, compatible with lepton universality. |
| first_indexed | 2024-03-06T22:16:29Z |
| format | Journal article |
| id | oxford-uuid:538dd576-11b6-41e9-8384-cf949fa6eb08 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:16:29Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:538dd576-11b6-41e9-8384-cf949fa6eb082022-03-26T16:32:30ZA precise measurement of the tau lepton lifetimeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:538dd576-11b6-41e9-8384-cf949fa6eb08EnglishSymplectic Elements at Oxford1996Abreu, PAdam, WAdye, TAgasi, EAjinenko, IAleksan, RAlekseev, GAllport, PAlmehed, SAlvsvaag, SAmaldi, UAmato, SAndreazza, AAndrieux, MAntilogus, PApel, WArnoud, YAsman, BAugustin, JAugustinus, ABaillon, PBambade, PBarao, FBarate, RBardin, DThe tau lepton lifetime has been measured using three different methods with the DELPHI detector. Two measurements of one-prong decays are combined, accounting for correlations, giving a result ofττ = 291.8 ± 3.3 (stat.) ± 2.0(sys.) fs while the decay length distribution of three-prong decays gives the result ττ = 286.7 ± 4.9 (stat.) ± 3.3 (sys.) fs. Combining the results presented here with previous DELPHI measurements, we get ττ = 291.4 ± 3.0 fs and find that the ratio of the coupling constant for tau decay relative to that for muon decay is 0.990 ± 0.009, compatible with lepton universality. |
| 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 precise measurement of the tau lepton lifetime |
| title | A precise measurement of the tau lepton lifetime |
| title_full | A precise measurement of the tau lepton lifetime |
| title_fullStr | A precise measurement of the tau lepton lifetime |
| title_full_unstemmed | A precise measurement of the tau lepton lifetime |
| title_short | A precise measurement of the tau lepton lifetime |
| title_sort | precise measurement of the tau lepton lifetime |
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