MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS
Evidence for the production of b-flavoured baryons in Z0 decays is reported from the analysis of 365 000 hadronic events collected by the DELPHI detector. Assuming that most of the weakly decaying b flavoured baryons produced by the Z0 are Λb, the observed signal of (Λl- + Λ̄l+) pairs, where l is a...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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1993
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| _version_ | 1826299733957672960 |
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| author | Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R Alekseev, G Algeri, A Allen, P Almehed, S Alvsvaag, S Amaldi, U Andreazza, A Antilogus, P Apel, W Apsimon, R Arnoud, Y Asman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbiellini, G |
| author_facet | Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R Alekseev, G Algeri, A Allen, P Almehed, S Alvsvaag, S Amaldi, U Andreazza, A Antilogus, P Apel, W Apsimon, R Arnoud, Y Asman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbiellini, G |
| author_sort | Abreu, P |
| collection | OXFORD |
| description | Evidence for the production of b-flavoured baryons in Z0 decays is reported from the analysis of 365 000 hadronic events collected by the DELPHI detector. Assuming that most of the weakly decaying b flavoured baryons produced by the Z0 are Λb, the observed signal of (Λl- + Λ̄l+) pairs, where l is a high transverse momentum lepton in the same jet as the Λ, leads to a production rate: f (b → Λb) x Br(Λb → Λlv X) = (0.41±0.13± 0.09)%. Using a sample of 18 reconstructed Λb decay vertices, the lifetime is determined to be τ(Λb) = (1.04-0.38+0.48±0.10) ps. |
| first_indexed | 2024-03-07T05:06:27Z |
| format | Journal article |
| id | oxford-uuid:da169f7a-99f0-4e97-be66-b6d6df228ffa |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:06:27Z |
| publishDate | 1993 |
| record_format | dspace |
| spelling | oxford-uuid:da169f7a-99f0-4e97-be66-b6d6df228ffa2022-03-27T09:00:40ZMEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:da169f7a-99f0-4e97-be66-b6d6df228ffaEnglishSymplectic Elements at Oxford1993Abreu, PAdam, WAdye, TAgasi, EAjinenko, IAleksan, RAlekseev, GAlgeri, AAllen, PAlmehed, SAlvsvaag, SAmaldi, UAndreazza, AAntilogus, PApel, WApsimon, RArnoud, YAsman, BAugustin, JAugustinus, ABaillon, PBambade, PBarao, FBarate, RBarbiellini, GEvidence for the production of b-flavoured baryons in Z0 decays is reported from the analysis of 365 000 hadronic events collected by the DELPHI detector. Assuming that most of the weakly decaying b flavoured baryons produced by the Z0 are Λb, the observed signal of (Λl- + Λ̄l+) pairs, where l is a high transverse momentum lepton in the same jet as the Λ, leads to a production rate: f (b → Λb) x Br(Λb → Λlv X) = (0.41±0.13± 0.09)%. Using a sample of 18 reconstructed Λb decay vertices, the lifetime is determined to be τ(Λb) = (1.04-0.38+0.48±0.10) ps. |
| spellingShingle | Abreu, P Adam, W Adye, T Agasi, E Ajinenko, I Aleksan, R Alekseev, G Algeri, A Allen, P Almehed, S Alvsvaag, S Amaldi, U Andreazza, A Antilogus, P Apel, W Apsimon, R Arnoud, Y Asman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbiellini, G MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS |
| title | MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS |
| title_full | MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS |
| title_fullStr | MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS |
| title_full_unstemmed | MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS |
| title_short | MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS |
| title_sort | measurement of lambda b production and lifetime in z0 hadronic decays |
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