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Measurements of WW and WZ production in W + jets final states in pp collisions |
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| Authors: | Abazov V M Abbott B Acharya B S Adams M Adams T Alexeev G D Alkhazov G Alton A Alverson G Alves G A Aoki M Askew A Åsman B Atkins S Atramentov O Augsten K Avila C BackusMayes J Badaud F Bagby L Baldin B Bandurin D V Banerjee S Barberis E Baringer P Barreto J Bartlett J F Bassler U Bazterra V Bean A Begalli M Belanger-Champagne C Bellantoni L Beri S B Bernardi G Bernhard R Bertram I Besançon M Beuselinck R Bezzubov V A Bhat P C Bhatnagar V Blazey G Blessing S Bloom K Boehnlein A Boline D Boos E E Borissov G Bose T Brandt A Brandt O Brock R Brooijmans G Bross A Brown D Brown J Bu X B Buehler M |
| Institution: | Joint Institute for Nuclear Research, Dubna, Russia. |
| Abstract: | We study WW and WZ production with ?νqq (?=e,μ) final states using data collected by the D0 detector at the Fermilab Tevatron Collider corresponding to 4.3 fb(-1) of integrated luminosity from pp collisions at sqrts]=1.96 TeV. Assuming the ratio between the production cross sections σ(WW) and σ(WZ) as predicted by the standard model, we measure the total WV (V=W,Z) cross section to be σ(WV)=19.6(-3.0)(+3.2) pb and reject the background-only hypothesis at a level of 7.9 standard deviations. We also use b-jet discrimination to separate the WZ component from the dominant WW component. Simultaneously fitting WW and WZ contributions, we measure σ(WW)=15.9(-3.2)(+3.7) pb and σ(WZ)=3.3(-3.3)(+4.1) pb, which is consistent with the standard model predictions. |
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