MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV
e+e- annihilation into hadrons was studied at CM energies between 39.8 and 45.2 GeV and a search was made for new heavy quarks. No evidence was found for the existence of a narrow state excluding the possible existence of the lowest vector toponium state in this mass range. A search for continuum pr...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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1984
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| _version_ | 1826299957837037568 |
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| author | Althoff, M Braunschweig, W Kirschfink, F Lubelsmeyer, K Martyn, H Peise, G Rimkus, J Rosskamp, P Sander, H Schmitz, D Siebke, H Wallraff, W Fischer, H Hartmann, H Hillen, W Jocksch, A Knop, G Kopke, L Kolanoski, H Kuck, H Mertens, V Wedemeyer, R Wollstadt, M Eisenberg, Y Gather, K |
| author_facet | Althoff, M Braunschweig, W Kirschfink, F Lubelsmeyer, K Martyn, H Peise, G Rimkus, J Rosskamp, P Sander, H Schmitz, D Siebke, H Wallraff, W Fischer, H Hartmann, H Hillen, W Jocksch, A Knop, G Kopke, L Kolanoski, H Kuck, H Mertens, V Wedemeyer, R Wollstadt, M Eisenberg, Y Gather, K |
| author_sort | Althoff, M |
| collection | OXFORD |
| description | e+e- annihilation into hadrons was studied at CM energies between 39.8 and 45.2 GeV and a search was made for new heavy quarks. No evidence was found for the existence of a narrow state excluding the possible existence of the lowest vector toponium state in this mass range. A search for continuum production of heavy quarks led to lower mass limits for new quarks of 22.0 GeV (eQ = 2 3) and 21.0 GeV (eQ = 1 3). Quarks are found to be pointlike, the corresponding mass parameter being larger than 288 GeV. A fit of the QCD and the electroweak contributions to R=σtot/σμμ yielded sin2θW = 0.30-0.07+0.23. © 1984. |
| first_indexed | 2024-03-07T05:09:50Z |
| format | Journal article |
| id | oxford-uuid:db337e8f-2f44-40b4-9c55-be272b24d83a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:09:50Z |
| publishDate | 1984 |
| record_format | dspace |
| spelling | oxford-uuid:db337e8f-2f44-40b4-9c55-be272b24d83a2022-03-27T09:08:41ZMEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEVJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:db337e8f-2f44-40b4-9c55-be272b24d83aEnglishSymplectic Elements at Oxford1984Althoff, MBraunschweig, WKirschfink, FLubelsmeyer, KMartyn, HPeise, GRimkus, JRosskamp, PSander, HSchmitz, DSiebke, HWallraff, WFischer, HHartmann, HHillen, WJocksch, AKnop, GKopke, LKolanoski, HKuck, HMertens, VWedemeyer, RWollstadt, MEisenberg, YGather, Ke+e- annihilation into hadrons was studied at CM energies between 39.8 and 45.2 GeV and a search was made for new heavy quarks. No evidence was found for the existence of a narrow state excluding the possible existence of the lowest vector toponium state in this mass range. A search for continuum production of heavy quarks led to lower mass limits for new quarks of 22.0 GeV (eQ = 2 3) and 21.0 GeV (eQ = 1 3). Quarks are found to be pointlike, the corresponding mass parameter being larger than 288 GeV. A fit of the QCD and the electroweak contributions to R=σtot/σμμ yielded sin2θW = 0.30-0.07+0.23. © 1984. |
| spellingShingle | Althoff, M Braunschweig, W Kirschfink, F Lubelsmeyer, K Martyn, H Peise, G Rimkus, J Rosskamp, P Sander, H Schmitz, D Siebke, H Wallraff, W Fischer, H Hartmann, H Hillen, W Jocksch, A Knop, G Kopke, L Kolanoski, H Kuck, H Mertens, V Wedemeyer, R Wollstadt, M Eisenberg, Y Gather, K MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV |
| title | MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV |
| title_full | MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV |
| title_fullStr | MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV |
| title_full_unstemmed | MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV |
| title_short | MEASUREMENT OF R AND SEARCH FOR THE TOP QUARK IN E+E- ANNIHILATION BETWEEN 39.8 AND 45.2 GEV |
| title_sort | measurement of r and search for the top quark in e e annihilation between 39 8 and 45 2 gev |
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