Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF.
We report on a search for the non-standard-model process u(c) + g --> t using pp[over ] collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2 fb;{-1}. The candidate events are classified as signal-like or backgroundlike by an artificial neural network....
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2009
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| _version_ | 1797086189385154560 |
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| author | Aaltonen, T Adelman, J Akimoto, T Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzurri, P Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Bartsch, V Bauer, G Beauchemin, P |
| author_facet | Aaltonen, T Adelman, J Akimoto, T Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzurri, P Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Bartsch, V Bauer, G Beauchemin, P |
| author_sort | Aaltonen, T |
| collection | OXFORD |
| description | We report on a search for the non-standard-model process u(c) + g --> t using pp[over ] collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2 fb;{-1}. The candidate events are classified as signal-like or backgroundlike by an artificial neural network. The observed discriminant distribution yields no evidence for flavor-changing neutral current top-quark production, resulting in an upper limit on the production cross section sigma(u(c) + g --> t) < 1.8 pb at the 95% C.L. Using theoretical predictions we convert the cross section limit to upper limits on flavor-changing neutral current branching ratios: B(t --> u + g) < 3.9 x 10;{-4} and B(t --> c + g) < 5.7 x 10;{-3}. |
| first_indexed | 2024-03-07T02:18:32Z |
| format | Journal article |
| id | oxford-uuid:a3196e2d-fb89-4d40-a2b7-d08f53c55e1e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:18:32Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:a3196e2d-fb89-4d40-a2b7-d08f53c55e1e2022-03-27T02:24:38ZSearch for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a3196e2d-fb89-4d40-a2b7-d08f53c55e1eEnglishSymplectic Elements at Oxford2009Aaltonen, TAdelman, JAkimoto, TAlvarez González, BAmerio, SAmidei, DAnastassov, AAnnovi, AAntos, JApollinari, GApresyan, AArisawa, TArtikov, AAshmanskas, WAttal, AAurisano, AAzfar, FAzzurri, PBadgett, WBarbaro-Galtieri, ABarnes, VBarnett, BBartsch, VBauer, GBeauchemin, PWe report on a search for the non-standard-model process u(c) + g --> t using pp[over ] collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2 fb;{-1}. The candidate events are classified as signal-like or backgroundlike by an artificial neural network. The observed discriminant distribution yields no evidence for flavor-changing neutral current top-quark production, resulting in an upper limit on the production cross section sigma(u(c) + g --> t) < 1.8 pb at the 95% C.L. Using theoretical predictions we convert the cross section limit to upper limits on flavor-changing neutral current branching ratios: B(t --> u + g) < 3.9 x 10;{-4} and B(t --> c + g) < 5.7 x 10;{-3}. |
| spellingShingle | Aaltonen, T Adelman, J Akimoto, T Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzurri, P Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Bartsch, V Bauer, G Beauchemin, P Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. |
| title | Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. |
| title_full | Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. |
| title_fullStr | Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. |
| title_full_unstemmed | Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. |
| title_short | Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF. |
| title_sort | search for top quark production via flavor changing neutral currents in w 1 jet events at cdf |
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