Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV
Using Zγ candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Zγ couplings vanish at tree level and are heavily suppressed at higher orders; hence any evidence of couplings indica...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| 格式: | Journal article |
| 语言: | English |
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2011
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| _version_ | 1826268774483886080 |
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| author | Aaltonen, T Lvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauce, M Bauer, G |
| author_facet | Aaltonen, T Lvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauce, M Bauer, G |
| author_sort | Aaltonen, T |
| collection | OXFORD |
| description | Using Zγ candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Zγ couplings vanish at tree level and are heavily suppressed at higher orders; hence any evidence of couplings indicates new physics. Measurements are performed using data corresponding to an integrated luminosity of 4.9fb-1 in the Z→νν̄ decay channel and 5.1fb-1 in the Z→l +l- (l=μ, e) decay channels. The combination of these measurements provides the most stringent limits to date on Zγ trilinear gauge couplings. Using an energy scale of Λ=1.5TeV to allow for a direct comparison with previous measurements, we find limits on the CP-conserving parameters that describe Zγ couplings to be |h3γ,Z|<0.022 and |h4γ,Z|<0.0009. These results are consistent with standard model predictions. © 2011 American Physical Society. |
| first_indexed | 2024-03-06T21:14:46Z |
| format | Journal article |
| id | oxford-uuid:3f668a76-7cd5-452f-8ec5-f9ab2b1e0224 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:14:46Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:3f668a76-7cd5-452f-8ec5-f9ab2b1e02242022-03-26T14:31:57ZLimits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeVJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3f668a76-7cd5-452f-8ec5-f9ab2b1e0224EnglishSymplectic Elements at Oxford2011Aaltonen, TLvarez González, BAmerio, SAmidei, DAnastassov, AAnnovi, AAntos, JApollinari, GAppel, JApresyan, AArisawa, TArtikov, AAsaadi, JAshmanskas, WAuerbach, BAurisano, AAzfar, FBadgett, WBarbaro-Galtieri, ABarnes, VBarnett, BBarria, PBartos, PBauce, MBauer, GUsing Zγ candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Zγ couplings vanish at tree level and are heavily suppressed at higher orders; hence any evidence of couplings indicates new physics. Measurements are performed using data corresponding to an integrated luminosity of 4.9fb-1 in the Z→νν̄ decay channel and 5.1fb-1 in the Z→l +l- (l=μ, e) decay channels. The combination of these measurements provides the most stringent limits to date on Zγ trilinear gauge couplings. Using an energy scale of Λ=1.5TeV to allow for a direct comparison with previous measurements, we find limits on the CP-conserving parameters that describe Zγ couplings to be |h3γ,Z|<0.022 and |h4γ,Z|<0.0009. These results are consistent with standard model predictions. © 2011 American Physical Society. |
| spellingShingle | Aaltonen, T Lvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Auerbach, B Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauce, M Bauer, G Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV |
| title | Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV |
| title_full | Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV |
| title_fullStr | Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV |
| title_full_unstemmed | Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV |
| title_short | Limits on anomalous trilinear gauge couplings in Zγ events from pp̄ collisions at √s=1.96TeV |
| title_sort | limits on anomalous trilinear gauge couplings in zγ events from pp collisions at √s 1 96tev |
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