Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector.
This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7 fb(-1) of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s=7 TeV. Final states containing one or two isolated leptons (electrons or muo...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2013
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| _version_ | 1826295553542062080 |
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| author | Aad, G Abajyan, T Abbott, B Abdallah, J Abdel Khalek, S Abdinov, O Aben, R Abi, B Abolins, M AbouZeid, O Abramowicz, H Abreu, H Abulaiti, Y Acharya, B Adamczyk, L Adams, D Addy, T Adelman, J Adomeit, S Adye, T Aefsky, S Agatonovic-Jovin, T Aguilar-Saavedra, J Agustoni, M Ahlen, S |
| author_facet | Aad, G Abajyan, T Abbott, B Abdallah, J Abdel Khalek, S Abdinov, O Aben, R Abi, B Abolins, M AbouZeid, O Abramowicz, H Abreu, H Abulaiti, Y Acharya, B Adamczyk, L Adams, D Addy, T Adelman, J Adomeit, S Adye, T Aefsky, S Agatonovic-Jovin, T Aguilar-Saavedra, J Agustoni, M Ahlen, S |
| author_sort | Aad, G |
| collection | OXFORD |
| description | This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7 fb(-1) of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s=7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of α(ℓ)P, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, α(ℓ)P(CPC)=-0.035±0.014(stat)±0.037(syst) and α(ℓ)P(CPV)=0.020±0.016(stat)(-0.017)(+0.013)(syst), are in good agreement with the standard model prediction of negligible top quark polarization. |
| first_indexed | 2024-03-07T04:02:47Z |
| format | Journal article |
| id | oxford-uuid:c527ed55-55cc-49b6-a65a-128147c37cbe |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:02:47Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:c527ed55-55cc-49b6-a65a-128147c37cbe2022-03-27T06:28:56ZMeasurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c527ed55-55cc-49b6-a65a-128147c37cbeEnglishSymplectic Elements at Oxford2013Aad, GAbajyan, TAbbott, BAbdallah, JAbdel Khalek, SAbdinov, OAben, RAbi, BAbolins, MAbouZeid, OAbramowicz, HAbreu, HAbulaiti, YAcharya, BAdamczyk, LAdams, DAddy, TAdelman, JAdomeit, SAdye, TAefsky, SAgatonovic-Jovin, TAguilar-Saavedra, JAgustoni, MAhlen, SThis Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7 fb(-1) of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s=7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of α(ℓ)P, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, α(ℓ)P(CPC)=-0.035±0.014(stat)±0.037(syst) and α(ℓ)P(CPV)=0.020±0.016(stat)(-0.017)(+0.013)(syst), are in good agreement with the standard model prediction of negligible top quark polarization. |
| spellingShingle | Aad, G Abajyan, T Abbott, B Abdallah, J Abdel Khalek, S Abdinov, O Aben, R Abi, B Abolins, M AbouZeid, O Abramowicz, H Abreu, H Abulaiti, Y Acharya, B Adamczyk, L Adams, D Addy, T Adelman, J Adomeit, S Adye, T Aefsky, S Agatonovic-Jovin, T Aguilar-Saavedra, J Agustoni, M Ahlen, S Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector. |
| title | Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector. |
| title_full | Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector. |
| title_fullStr | Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector. |
| title_full_unstemmed | Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector. |
| title_short | Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s=7 TeV using the ATLAS detector. |
| title_sort | measurement of top quark polarization in top antitop events from proton proton collisions at √s 7 tev using the atlas detector |
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