Evidence for production of single top quarks and first direct measurement of
The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron pp̄ collider. Using a 0.9fb-1 dataset, we apply a multivariate analysis to separate signal from background and measure σ(pp̄→tb+X,tqb+X)=4.9±1.4pb. The probability to measure a cross section...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Izdano: |
2007
|
| _version_ | 1826304614087000064 |
|---|---|
| author | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Aguilo, E Aguilo, E Aguilo, E Aguilo, E Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alton, A Alverson, G Alves, G Anastasoaie, M Ancu, L Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y |
| author_facet | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Aguilo, E Aguilo, E Aguilo, E Aguilo, E Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alton, A Alverson, G Alves, G Anastasoaie, M Ancu, L Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y |
| author_sort | Abazov, V |
| collection | OXFORD |
| description | The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron pp̄ collider. Using a 0.9fb-1 dataset, we apply a multivariate analysis to separate signal from background and measure σ(pp̄→tb+X,tqb+X)=4.9±1.4pb. 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<|Vtb|≤1 at 95% C.L. within the standard model. © 2007 The American Physical Society. |
| first_indexed | 2024-03-07T06:20:30Z |
| format | Journal article |
| id | oxford-uuid:f28cf95c-5684-4427-90a8-01edc1de9742 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:20:30Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:f28cf95c-5684-4427-90a8-01edc1de97422022-03-27T12:04:47ZEvidence for production of single top quarks and first direct measurement ofJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f28cf95c-5684-4427-90a8-01edc1de9742Symplectic Elements at Oxford2007Abazov, VAbbott, BAbolins, MAcharya, BAdams, MAdams, TAguilo, EAguilo, EAguilo, EAguilo, EAhn, SAhsan, MAlexeev, GAlkhazov, GAlton, AAlton, AAlverson, GAlves, GAnastasoaie, MAncu, LAndeen, TAnderson, SAndrieu, BAnzelc, MSArnoud, YThe D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron pp̄ collider. Using a 0.9fb-1 dataset, we apply a multivariate analysis to separate signal from background and measure σ(pp̄→tb+X,tqb+X)=4.9±1.4pb. 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<|Vtb|≤1 at 95% C.L. within the standard model. © 2007 The American Physical Society. |
| spellingShingle | Abazov, V Abbott, B Abolins, M Acharya, B Adams, M Adams, T Aguilo, E Aguilo, E Aguilo, E Aguilo, E Ahn, S Ahsan, M Alexeev, G Alkhazov, G Alton, A Alton, A Alverson, G Alves, G Anastasoaie, M Ancu, L Andeen, T Anderson, S Andrieu, B Anzelc, MS Arnoud, Y Evidence for production of single top quarks and first direct measurement of |
| title | Evidence for production of single top quarks and first direct measurement of |
| title_full | Evidence for production of single top quarks and first direct measurement of |
| title_fullStr | Evidence for production of single top quarks and first direct measurement of |
| title_full_unstemmed | Evidence for production of single top quarks and first direct measurement of |
| title_short | Evidence for production of single top quarks and first direct measurement of |
| title_sort | evidence for production of single top quarks and first direct measurement of |
| work_keys_str_mv | AT abazovv evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT abbottb evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT abolinsm evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT acharyab evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT adamsm evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT adamst evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT aguiloe evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT aguiloe evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT aguiloe evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT aguiloe evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT ahns evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT ahsanm evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT alexeevg evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT alkhazovg evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT altona evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT altona evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT alversong evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT alvesg evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT anastasoaiem evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT ancul evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT andeent evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT andersons evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT andrieub evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT anzelcms evidenceforproductionofsingletopquarksandfirstdirectmeasurementof AT arnoudy evidenceforproductionofsingletopquarksandfirstdirectmeasurementof |