Evidence for production of single top quarks and first direct measurement of |Vtb|.
The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron pp[over ] collider. Using a 0.9 fb(-1) dataset, we apply a multivariate analysis to separate signal from background and measure sigma(pp[over ]-->tb+X,tqb+X)=4.9+/-1.4 pb. The probabi...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2007
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| _version_ | 1797088312140234752 |
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| author | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Aguilo, E Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alverson, G Alves, G Anastasoaie, M Ancu, L Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Assis Jesus, A |
| author_facet | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Aguilo, E Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alverson, G Alves, G Anastasoaie, M Ancu, L Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Assis Jesus, A |
| author_sort | Abazov, V |
| collection | OXFORD |
| description | The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron pp[over ] collider. Using a 0.9 fb(-1) dataset, we apply a multivariate analysis to separate signal from background and measure sigma(pp[over ]-->tb+X,tqb+X)=4.9+/-1.4 pb. The probability to measure a cross section at this value or higher in the absence of a signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the Cabibbo-Kobayashi-Maskawa matrix element that describes the Wtb coupling and find 0.68<|V(tb)| |
| first_indexed | 2024-03-07T02:48:12Z |
| format | Journal article |
| id | oxford-uuid:acbf827d-1b64-4652-b296-468b5d593818 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:48:12Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:acbf827d-1b64-4652-b296-468b5d5938182022-03-27T03:31:06ZEvidence for production of single top quarks and first direct measurement of |Vtb|.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:acbf827d-1b64-4652-b296-468b5d593818EnglishSymplectic Elements at Oxford2007Abazov, VAbbott, BAbolins, MAcharya, BAdams, MAdams, TAguilo, EAhn, SAhsan, MAlexeev, GAlkhazov, GAlton, AAlverson, GAlves, GAnastasoaie, MAncu, LAndeen, TAnderson, SAndrieu, BAnzelc, MSArnoud, YArov, MAskew, AAsman, BAssis Jesus, AThe D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron pp[over ] collider. Using a 0.9 fb(-1) dataset, we apply a multivariate analysis to separate signal from background and measure sigma(pp[over ]-->tb+X,tqb+X)=4.9+/-1.4 pb. The probability to measure a cross section at this value or higher in the absence of a signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the Cabibbo-Kobayashi-Maskawa matrix element that describes the Wtb coupling and find 0.68<|V(tb)| |
| spellingShingle | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Aguilo, E Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alverson, G Alves, G Anastasoaie, M Ancu, L Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Arov, M Askew, A Asman, B Assis Jesus, A Evidence for production of single top quarks and first direct measurement of |Vtb|. |
| title | Evidence for production of single top quarks and first direct measurement of |Vtb|. |
| title_full | Evidence for production of single top quarks and first direct measurement of |Vtb|. |
| title_fullStr | Evidence for production of single top quarks and first direct measurement of |Vtb|. |
| title_full_unstemmed | Evidence for production of single top quarks and first direct measurement of |Vtb|. |
| title_short | Evidence for production of single top quarks and first direct measurement of |Vtb|. |
| title_sort | evidence for production of single top quarks and first direct measurement of vtb |
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