Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios
We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (tt̄) produced in pp̄ collisions at s=1.96TeV by the Fermilab Tevatron Collider. We use 370pb-1 of data collected by the D0 experiment and select events with at least...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Format: | Journal article |
Language: | English |
Published: |
2007
|
_version_ | 1797101774566326272 |
---|---|
author | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Agelou, M Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alverson, G Alves, G Anastasoaie, M Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Jesus, A Atramentov, O |
author_facet | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Agelou, M Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alverson, G Alves, G Anastasoaie, M Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Jesus, A Atramentov, O |
author_sort | Abazov, V |
collection | OXFORD |
description | We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (tt̄) produced in pp̄ collisions at s=1.96TeV by the Fermilab Tevatron Collider. We use 370pb-1 of data collected by the D0 experiment and select events with at least one high transverse momentum electron or muon, high transverse energy imbalance, and four or more jets. We discriminate between b- and b̄-quark jets by using the charge and momenta of tracks within the jet cones. The data are consistent with the expected electric charge, |q|=2e/3. We exclude, at the 92% C.L., that the sample is solely due to the production of exotic quark pairs QQ̄ with |q|=4e/3. We place an upper limit on the fraction of QQ̄ pairs ρ<0.80 at the 90% C.L. © 2007 The American Physical Society. |
first_indexed | 2024-03-07T05:56:38Z |
format | Journal article |
id | oxford-uuid:eabc161a-9887-495a-b458-b6d6a244ab45 |
institution | University of Oxford |
language | English |
last_indexed | 2024-03-07T05:56:38Z |
publishDate | 2007 |
record_format | dspace |
spelling | oxford-uuid:eabc161a-9887-495a-b458-b6d6a244ab452022-03-27T11:04:29ZExperimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenariosJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:eabc161a-9887-495a-b458-b6d6a244ab45EnglishSymplectic Elements at Oxford2007Abazov, VAbbott, BAbolins, MAcharya, BAdams, MAdams, TAgelou, MAhn, SAhsan, MAlexeev, GAlkhazov, GAlton, AAlverson, GAlves, GAnastasoaie, MAndeen, TAnderson, SAndrieu, BAnzelc, MSArnoud, YArov, MAskew, AAsman, BJesus, AAtramentov, OWe present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (tt̄) produced in pp̄ collisions at s=1.96TeV by the Fermilab Tevatron Collider. We use 370pb-1 of data collected by the D0 experiment and select events with at least one high transverse momentum electron or muon, high transverse energy imbalance, and four or more jets. We discriminate between b- and b̄-quark jets by using the charge and momenta of tracks within the jet cones. The data are consistent with the expected electric charge, |q|=2e/3. We exclude, at the 92% C.L., that the sample is solely due to the production of exotic quark pairs QQ̄ with |q|=4e/3. We place an upper limit on the fraction of QQ̄ pairs ρ<0.80 at the 90% C.L. © 2007 The American Physical Society. |
spellingShingle | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Agelou, M Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alverson, G Alves, G Anastasoaie, M Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Jesus, A Atramentov, O Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios |
title | Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios |
title_full | Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios |
title_fullStr | Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios |
title_full_unstemmed | Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios |
title_short | Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios |
title_sort | experimental discrimination between charge 2e 3 top quark and charge 4e 3 exotic quark production scenarios |
work_keys_str_mv | AT abazovv experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT abbottb experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT abolinsm experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT acharyab experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT adamsm experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT adamst experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT ageloum experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT ahns experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT ahsanm experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT alexeevg experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT alkhazovg experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT altona experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT alversong experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT alvesg experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT anastasoaiem experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT andeent experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT andersons experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT andrieub experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT anzelcms experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT arnoudy experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT arovm experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT askewa experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT asmanb experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT jesusa experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios AT atramentovo experimentaldiscriminationbetweencharge2e3topquarkandcharge4e3exoticquarkproductionscenarios |