Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV
We report the first evidence of Z boson pair production at a hadron collider with a significance exceeding 4 standard deviations. This result is based on a data sample corresponding to 1.9fb-1 of integrated luminosity from pp̄ collisions at s=1.96TeV collected with the Collider Detector at Fermilab...
| Huvudupphovsmän: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Materialtyp: | Journal article |
| Språk: | English |
| Publicerad: |
2008
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| _version_ | 1826290713900351488 |
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| author | Aaltonen, T Adelman, J Akimoto, T Albrow, MG Álvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Aoki, M Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A Barnes, V |
| author_facet | Aaltonen, T Adelman, J Akimoto, T Albrow, MG Álvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Aoki, M Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A Barnes, V |
| author_sort | Aaltonen, T |
| collection | OXFORD |
| description | We report the first evidence of Z boson pair production at a hadron collider with a significance exceeding 4 standard deviations. This result is based on a data sample corresponding to 1.9fb-1 of integrated luminosity from pp̄ collisions at s=1.96TeV collected with the Collider Detector at Fermilab II detector. In the ′ ′ channel, we observe three ZZ candidates with an expected background of 0.096-0.063+0.092 events. In the νν channel, we use a leading-order calculation of the relative ZZ and WW event probabilities to discriminate between signal and background. In the combination of ′ ′ and νν channels, we observe an excess of events with a probability of 5.1×10-6 to be due to the expected background. This corresponds to a significance of 4.4 standard deviations. The measured cross section is σ(pp̄→ZZ)=1.4-0.6+0.7(stat+syst)pb, consistent with the standard model expectation. © 2008 The American Physical Society. |
| first_indexed | 2024-03-07T02:48:24Z |
| format | Journal article |
| id | oxford-uuid:acd28e34-4f94-4a89-836c-1d0198db9a1c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:48:24Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:acd28e34-4f94-4a89-836c-1d0198db9a1c2022-03-27T03:31:31ZStrong evidence for ZZ production in pp̄ collisions at s=1.96TeVJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:acd28e34-4f94-4a89-836c-1d0198db9a1cEnglishSymplectic Elements at Oxford2008Aaltonen, TAdelman, JAkimoto, TAlbrow, MGÁlvarez González, BAmerio, SAmidei, DAnastassov, AAnnovi, AAntos, JAoki, MApollinari, GApresyan, AArisawa, TArtikov, AAshmanskas, WAttal, AAurisano, AAzfar, FAzzi-Bacchetta, PAzzurri, PBacchetta, NBadgett, WBarbaro-Galtieri, ABarnes, VWe report the first evidence of Z boson pair production at a hadron collider with a significance exceeding 4 standard deviations. This result is based on a data sample corresponding to 1.9fb-1 of integrated luminosity from pp̄ collisions at s=1.96TeV collected with the Collider Detector at Fermilab II detector. In the ′ ′ channel, we observe three ZZ candidates with an expected background of 0.096-0.063+0.092 events. In the νν channel, we use a leading-order calculation of the relative ZZ and WW event probabilities to discriminate between signal and background. In the combination of ′ ′ and νν channels, we observe an excess of events with a probability of 5.1×10-6 to be due to the expected background. This corresponds to a significance of 4.4 standard deviations. The measured cross section is σ(pp̄→ZZ)=1.4-0.6+0.7(stat+syst)pb, consistent with the standard model expectation. © 2008 The American Physical Society. |
| spellingShingle | Aaltonen, T Adelman, J Akimoto, T Albrow, MG Álvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Aoki, M Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A Barnes, V Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV |
| title | Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV |
| title_full | Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV |
| title_fullStr | Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV |
| title_full_unstemmed | Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV |
| title_short | Strong evidence for ZZ production in pp̄ collisions at s=1.96TeV |
| title_sort | strong evidence for zz production in pp collisions at s 1 96tev |
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