Search for first-generation scalar and vector leptoquarks
We describe a search for the pair production of first-generation scalar and vector leptoquarks in the eejj and evjj channels by the DØ Collaboration. The data are from the 1992-1996 pp̄ run at √s=1.8 TeV at the Fermilab Tevatron collider. We find no evidence for leptoquark production; in addition, n...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2001
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| _version_ | 1826289219662774272 |
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| author | Abazov, V Abbott, B Abdesselam, A Abolins, M Abramov, V Acharya, B Adams, D Adams, M Ahmed, SN Alexeev, G Alves, G Amos, N Anderson, E Arnoud, Y Baarmand, M Babintsev, V Babukhadia, L Bacon, T Baden, A Baldin, B Balm, P Banerjee, S Barberis, E Baringer, P Barreto, J |
| author_facet | Abazov, V Abbott, B Abdesselam, A Abolins, M Abramov, V Acharya, B Adams, D Adams, M Ahmed, SN Alexeev, G Alves, G Amos, N Anderson, E Arnoud, Y Baarmand, M Babintsev, V Babukhadia, L Bacon, T Baden, A Baldin, B Balm, P Banerjee, S Barberis, E Baringer, P Barreto, J |
| author_sort | Abazov, V |
| collection | OXFORD |
| description | We describe a search for the pair production of first-generation scalar and vector leptoquarks in the eejj and evjj channels by the DØ Collaboration. The data are from the 1992-1996 pp̄ run at √s=1.8 TeV at the Fermilab Tevatron collider. We find no evidence for leptoquark production; in addition, no kinematically interesting events are observed using relaxed selection criteria. The results from the eejj and evjj channels are combined with those from a previous DØ analysis of the vvjj channel to obtain 95% confidence level (C.L.) upper limits on the leptoquark pair-production cross section as a function of mass and of β, the branching fraction to a charged lepton. These limits are compared to next-to-leading-order theory to set 95% C.L. lower limits on the mass of a first-generation scalar leptoquark of 225, 204, and 79 GeV/c2 for β=1, 1/2, and 0, respectively. For vector leptoquarks with gauge (Yang-Mills) couplings, 95% C.L. lower limits of 345, 337, and 206 GeV/c2 are set on the mass for β=1, 1/2, and 0, respectively. Mass limits for vector leptoquarks are also set for anomalous vector couplings. ©2001 The American Physical Society. |
| first_indexed | 2024-03-07T02:25:33Z |
| format | Journal article |
| id | oxford-uuid:a57431f7-bdc2-415b-83ef-472fe507e207 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:25:33Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:a57431f7-bdc2-415b-83ef-472fe507e2072022-03-27T02:40:46ZSearch for first-generation scalar and vector leptoquarksJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a57431f7-bdc2-415b-83ef-472fe507e207EnglishSymplectic Elements at Oxford2001Abazov, VAbbott, BAbdesselam, AAbolins, MAbramov, VAcharya, BAdams, DAdams, MAhmed, SNAlexeev, GAlves, GAmos, NAnderson, EArnoud, YBaarmand, MBabintsev, VBabukhadia, LBacon, TBaden, ABaldin, BBalm, PBanerjee, SBarberis, EBaringer, PBarreto, JWe describe a search for the pair production of first-generation scalar and vector leptoquarks in the eejj and evjj channels by the DØ Collaboration. The data are from the 1992-1996 pp̄ run at √s=1.8 TeV at the Fermilab Tevatron collider. We find no evidence for leptoquark production; in addition, no kinematically interesting events are observed using relaxed selection criteria. The results from the eejj and evjj channels are combined with those from a previous DØ analysis of the vvjj channel to obtain 95% confidence level (C.L.) upper limits on the leptoquark pair-production cross section as a function of mass and of β, the branching fraction to a charged lepton. These limits are compared to next-to-leading-order theory to set 95% C.L. lower limits on the mass of a first-generation scalar leptoquark of 225, 204, and 79 GeV/c2 for β=1, 1/2, and 0, respectively. For vector leptoquarks with gauge (Yang-Mills) couplings, 95% C.L. lower limits of 345, 337, and 206 GeV/c2 are set on the mass for β=1, 1/2, and 0, respectively. Mass limits for vector leptoquarks are also set for anomalous vector couplings. ©2001 The American Physical Society. |
| spellingShingle | Abazov, V Abbott, B Abdesselam, A Abolins, M Abramov, V Acharya, B Adams, D Adams, M Ahmed, SN Alexeev, G Alves, G Amos, N Anderson, E Arnoud, Y Baarmand, M Babintsev, V Babukhadia, L Bacon, T Baden, A Baldin, B Balm, P Banerjee, S Barberis, E Baringer, P Barreto, J Search for first-generation scalar and vector leptoquarks |
| title | Search for first-generation scalar and vector leptoquarks |
| title_full | Search for first-generation scalar and vector leptoquarks |
| title_fullStr | Search for first-generation scalar and vector leptoquarks |
| title_full_unstemmed | Search for first-generation scalar and vector leptoquarks |
| title_short | Search for first-generation scalar and vector leptoquarks |
| title_sort | search for first generation scalar and vector leptoquarks |
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