Measurements of WW and WZ production in W + jets final states in p-pbar collisions

V. Abazov; G. Bernardi; D. Brown; J. Brown; Y. Enari; N. Huske; J. Lellouch; F. Badaud; Pascal Gay; Ph. Gris; G. Sajot; J. Stark; B. Calpas; M.-C. Cousinou; A. Duperrin; W. Geng; D. Jamin; E. Kajfasz; S. Kermiche; G.-S. Muanza; E. Nagy; N. Osman; J.-F. Grivaz; T. Guillemin; M. Jaffré; P. Pétroff; S. Greder; F. Miconi; I. Ripp-Baudot; G. Grenier; T. Kurca; P. Lebrun; P. Verdier; U. Bassler; M. Besancon; S. Chevalier-Théry; F. Couderc; A. Croc; F. Déliot; C. Deterre; A. Grohsjean; Z. Hubacek; R. Madar; C. Royon; V. Shary; M. Titov; B. Tuchming; D. Vilanova

doi:10.1103/PhysRevLett.108.181803

Journal articles

Measurements of WW and WZ production in W + jets final states in p-pbar collisions

V. Abazov G. Bernardi ¹ D. Brown ¹ J. Brown ¹ Y. Enari ¹ N. Huske ¹ J. Lellouch ¹ F. Badaud ² Pascal Gay ² Ph. Gris ² G. Sajot ³ J. Stark ³ B. Calpas ⁴ M.-C. Cousinou ⁴ A. Duperrin ⁴ W. Geng ⁴ D. Jamin ⁴ E. Kajfasz ⁴ S. Kermiche ⁴ G.-S. Muanza ⁴ E. Nagy ⁴ N. Osman ⁴ J.-F. Grivaz ⁵ T. Guillemin ⁵ M. Jaffré ⁵ P. Pétroff ⁵ S. Greder ⁶ F. Miconi ⁶ I. Ripp-Baudot ⁶ G. Grenier ⁷ T. Kurca ⁸ P. Lebrun ⁷ P. Verdier ⁷ U. Bassler ⁹ M. Besancon ⁹ S. Chevalier-Théry ⁹ F. Couderc ⁹ A. Croc ⁹ F. Déliot ⁹ C. Deterre ⁹ A. Grohsjean ⁹ Z. Hubacek ⁹ R. Madar ⁹ C. Royon ⁹ V. Shary ⁹ M. Titov ⁹ B. Tuchming ⁹ D. Vilanova ⁹

1 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

3 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

4 CPPM - Centre de Physique des Particules de Marseille

5 LAL - Laboratoire de l'Accélérateur Linéaire

6 IPHC - Institut Pluridisciplinaire Hubert Curien

7 D0

IPNL - Institut de Physique Nucléaire de Lyon

8 IPNL - Institut de Physique Nucléaire de Lyon

9 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

Abstract : We study WW and WZ production with $l\nu q{q}$ ($l=e,\mu$) final states using data collected by the D0 detector at the Fermilab Tevatron Collider corresponding to 4.3 fb^-1 of integrated luminosity from p-pbar collisions at sqrt{s}=1.96 TeV. Assuming the ratio between the production cross sections $\sigma(WW)$ and $\sigma(WZ)$ as predicted by the standard model, we measure the total WV (V=W,Z) cross section to be $\sigma(WV)= 19.6^{+3.2}_{-3.0}$ 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 $\sigma(WW) = 15.9^{+3.7}_{-3.2}$ pb and $\sigma(WZ) = 3.3^{+4.1}_{-3.3}$ pb, which is consistent with the standard model predictions.

Document type :

Journal articles

Domain :

Physics [physics] / High Energy Physics - Experiment [hep-ex]

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http://hal.in2p3.fr/in2p3-00648074
Contributor : Swarna Bassava <>
Submitted on : Monday, December 5, 2011 - 9:41:48 AM
Last modification on : Sunday, June 20, 2021 - 3:35:10 AM

Measurements of WW and WZ production in W + jets final states in p-pbar collisions

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Measurements of WW and WZ production in W + jets final states in p-pbar collisions

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