Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV.
We have measured the ratio of prompt production rates of the charmonium states chi(c1) and chi(c2) in 110 pb(-1) of pp collisions at sqrt[s] = 1.8 TeV. The photon from their decay into J/psi(gamma) is reconstructed through conversion into e+e- pairs. The energy resolution this technique provides mak...
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| Format: | Journal article |
| Sprache: | English |
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2001
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| _version_ | 1826291878880870400 |
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| author | Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amendolia, SR Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bailey, M Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, V Barnett, B Baroiant, S Barone, M Bauer, G |
| author_facet | Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amendolia, SR Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bailey, M Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, V Barnett, B Baroiant, S Barone, M Bauer, G |
| author_sort | Affolder, T |
| collection | OXFORD |
| description | We have measured the ratio of prompt production rates of the charmonium states chi(c1) and chi(c2) in 110 pb(-1) of pp collisions at sqrt[s] = 1.8 TeV. The photon from their decay into J/psi(gamma) is reconstructed through conversion into e+e- pairs. The energy resolution this technique provides makes the resolution of the two states possible. We find the ratio of production cross sections sigma(chi(c2))/sigma(chi(c1)) = 0.96+/-0.27(stat)+/-0.11(syst) for events with pT(J/psi) > 4.0 GeV/c, /eta(J/psi)/ < 0.6, and pT(gamma) > 1.0 GeV/c. |
| first_indexed | 2024-03-07T03:06:06Z |
| format | Journal article |
| id | oxford-uuid:b2957f70-219f-4203-9ad9-8b656d6cb9ed |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:06:06Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:b2957f70-219f-4203-9ad9-8b656d6cb9ed2022-03-27T04:12:46ZProduction of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b2957f70-219f-4203-9ad9-8b656d6cb9edEnglishSymplectic Elements at Oxford2001Affolder, TAkimoto, HAkopian, AAlbrow, MGAmaral, PAmendolia, SRAmidei, DAnikeev, KAntos, JApollinari, GArisawa, TAsakawa, TAshmanskas, WAzfar, FAzzi-Bacchetta, PBacchetta, NBailey, MBailey, Sde Barbaro, PBarbaro-Galtieri, ABarnes, VBarnett, BBaroiant, SBarone, MBauer, GWe have measured the ratio of prompt production rates of the charmonium states chi(c1) and chi(c2) in 110 pb(-1) of pp collisions at sqrt[s] = 1.8 TeV. The photon from their decay into J/psi(gamma) is reconstructed through conversion into e+e- pairs. The energy resolution this technique provides makes the resolution of the two states possible. We find the ratio of production cross sections sigma(chi(c2))/sigma(chi(c1)) = 0.96+/-0.27(stat)+/-0.11(syst) for events with pT(J/psi) > 4.0 GeV/c, /eta(J/psi)/ < 0.6, and pT(gamma) > 1.0 GeV/c. |
| spellingShingle | Affolder, T Akimoto, H Akopian, A Albrow, MG Amaral, P Amendolia, SR Amidei, D Anikeev, K Antos, J Apollinari, G Arisawa, T Asakawa, T Ashmanskas, W Azfar, F Azzi-Bacchetta, P Bacchetta, N Bailey, M Bailey, S de Barbaro, P Barbaro-Galtieri, A Barnes, V Barnett, B Baroiant, S Barone, M Bauer, G Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV. |
| title | Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV. |
| title_full | Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV. |
| title_fullStr | Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV. |
| title_full_unstemmed | Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV. |
| title_short | Production of chi(c1) and chi(c2) in pp collisions at sqrt[S] = 1.8 TeV. |
| title_sort | production of chi c1 and chi c2 in pp collisions at sqrt s 1 8 tev |
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