Search for promptly produced heavy quarkonium states in hadronic Z decays
A search has been made for direct production of heavy quarkonium states in more than 3 million hadronic Z 0 decays in the 1991-1994 DELPHI data. Prompt J/ψ, ψ(2 S) and Γ candidates have been searched for through their leptonic decay modes using criteria based on the kinematics and decay vertex posit...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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1995
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| _version_ | 1826307078741819392 |
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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 Åsman, 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 Allport, P Almehed, S Alvsvaag, S Amaldi, U Amato, S Andreazza, A Andrieux, M Antilogus, P Apel, W Arnoud, Y Åsman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbiellini, G |
| author_sort | Abreu, P |
| collection | OXFORD |
| description | A search has been made for direct production of heavy quarkonium states in more than 3 million hadronic Z 0 decays in the 1991-1994 DELPHI data. Prompt J/ψ, ψ(2 S) and Γ candidates have been searched for through their leptonic decay modes using criteria based on the kinematics and decay vertex positions. New upper limits are set at the 90% confidence level for Br(Z 0→(Qq)X)/Br(Z 0→ hadrons) for various strong production mechanisms of J/ψ and Γ; these range down to 0.9×10-4. The limits are set in the presence of a small excess (∼1% statistical probability of a background fluctuation) in the sum of candidates from prompt J/ψ, ψ(2 S), γ(1 S), γ(2 S) and γ(3 S) relative to the estimated background. © 1996 Springer-Verlag. |
| first_indexed | 2024-03-07T06:57:35Z |
| format | Journal article |
| id | oxford-uuid:fea6fc6d-4d67-42c7-a5a7-b1eb71e8a9a3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:57:35Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:fea6fc6d-4d67-42c7-a5a7-b1eb71e8a9a32022-03-27T13:38:30ZSearch for promptly produced heavy quarkonium states in hadronic Z decaysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fea6fc6d-4d67-42c7-a5a7-b1eb71e8a9a3EnglishSymplectic Elements at Oxford1995Abreu, PAdam, WAdye, TAgasi, EAjinenko, IAleksan, RAlekseev, GAllport, PAlmehed, SAlvsvaag, SAmaldi, UAmato, SAndreazza, AAndrieux, MAntilogus, PApel, WArnoud, YÅsman, BAugustin, JAugustinus, ABaillon, PBambade, PBarao, FBarate, RBarbiellini, GA search has been made for direct production of heavy quarkonium states in more than 3 million hadronic Z 0 decays in the 1991-1994 DELPHI data. Prompt J/ψ, ψ(2 S) and Γ candidates have been searched for through their leptonic decay modes using criteria based on the kinematics and decay vertex positions. New upper limits are set at the 90% confidence level for Br(Z 0→(Qq)X)/Br(Z 0→ hadrons) for various strong production mechanisms of J/ψ and Γ; these range down to 0.9×10-4. The limits are set in the presence of a small excess (∼1% statistical probability of a background fluctuation) in the sum of candidates from prompt J/ψ, ψ(2 S), γ(1 S), γ(2 S) and γ(3 S) relative to the estimated background. © 1996 Springer-Verlag. |
| 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 Åsman, B Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barate, R Barbiellini, G Search for promptly produced heavy quarkonium states in hadronic Z decays |
| title | Search for promptly produced heavy quarkonium states in hadronic Z decays |
| title_full | Search for promptly produced heavy quarkonium states in hadronic Z decays |
| title_fullStr | Search for promptly produced heavy quarkonium states in hadronic Z decays |
| title_full_unstemmed | Search for promptly produced heavy quarkonium states in hadronic Z decays |
| title_short | Search for promptly produced heavy quarkonium states in hadronic Z decays |
| title_sort | search for promptly produced heavy quarkonium states in hadronic z decays |
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