Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV
© 2016, Springer Verlag. All rights reserved. Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb-1, collected by the CMS experiment at the LHC. Final stat...
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/134597 |
| _version_ | 1826195304758640640 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | © 2016, Springer Verlag. All rights reserved. Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb-1, collected by the CMS experiment at the LHC. Final states are selected in which the associated W boson decays to a charged lepton and a neutrino or the Z boson decays to two charged leptons. Signal events are identified by matching reconstructed objects in the detector to specific final state particles from tt̄W or tt̄Z decays. The tt̄W cross section is measured to be (Formula Presented) fb with a significance of 4.8 standard deviations from the background-only hypothesis. The tt̄Z cross section is measured to be (Formula Presented) fb with a significance of 6.4 standard deviations from the background-only hypothesis. These measurements are used to set bounds on five anomalous dimension-six operators that would affect the tt̄W and tt̄Z cross sections. |
| first_indexed | 2024-09-23T10:10:36Z |
| format | Article |
| id | mit-1721.1/134597 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:10:36Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1345972023-01-06T20:31:19Z Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © 2016, Springer Verlag. All rights reserved. Measurements of the cross sections for top quark pairs produced in association with a W or Z boson are presented, using 8 TeV pp collision data corresponding to an integrated luminosity of 19.5 fb-1, collected by the CMS experiment at the LHC. Final states are selected in which the associated W boson decays to a charged lepton and a neutrino or the Z boson decays to two charged leptons. Signal events are identified by matching reconstructed objects in the detector to specific final state particles from tt̄W or tt̄Z decays. The tt̄W cross section is measured to be (Formula Presented) fb with a significance of 4.8 standard deviations from the background-only hypothesis. The tt̄Z cross section is measured to be (Formula Presented) fb with a significance of 6.4 standard deviations from the background-only hypothesis. These measurements are used to set bounds on five anomalous dimension-six operators that would affect the tt̄W and tt̄Z cross sections. 2021-10-27T20:05:43Z 2021-10-27T20:05:43Z 2016 2019-05-22T14:13:58Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134597 Khachatryan, V., et al. "Observation of Top Quark Pairs Produced in Association with a Vector Boson in Pp Collisions at Root S=8 Tev." Journal of High Energy Physics 1 (2016). en 10.1007/JHEP01(2016)096 Journal of High Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Springer |
| spellingShingle | The CMS Collaboration Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV |
| title | Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV |
| title_full | Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV |
| title_fullStr | Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV |
| title_full_unstemmed | Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV |
| title_short | Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 √s=8 TeV |
| title_sort | observation of top quark pairs produced in association with a vector boson in pp collisions at s 8 √s 8 tev |
| url | https://hdl.handle.net/1721.1/134597 |
| work_keys_str_mv | AT thecmscollaboration observationoftopquarkpairsproducedinassociationwithavectorbosoninppcollisionsats8s8tev |