Measurements of $WW$ and $WZ$ production in $W$ + jets final states in $p\bar{p}$ collisions
(2012) Physical Review Letters — Vol. 108 (2012)
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- 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.
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Tanasijczuk, A. J., D0, & et al. (2012). Measurements of $WW$ and $WZ$ production in $W$ + jets final states in $p\bar{p}$ collisions. Physical Review Letters, 108. https://doi.org/10.1103/PhysRevLett.108.181803 (Original work published 2012)