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arXiv · 1110.1825

Electroweak vector boson production at the LHC as a probe of mechanisms of diffraction

Krzysztof Golec-Biernat·Christophe Royon·Laurent Schoeffel·Rafal Staszewski
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Abstract

We show that the double diffractive electroweak vector boson production in the $pp$ collisions at the LHC is an ideal probe of QCD based mechanisms of diffraction. Assuming the resolved Pomeron model with flavor symmetric parton distributions, the $W$ production asymmetry in rapidity equals exactly zero. In other approaches, like the soft color interaction model, in which soft gluon exchanges are responsible for diffraction, the asymmetry is non-zero and equal to that in the inclusive $W$ production. In the same way, the ratio of the $W$ to $Z$ boson production is independent of rapidity in the models with resolved Pomeron in contrast to the predictions of the soft color interaction model.

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Krzysztof Golec-Biernat, Christophe Royon, Laurent Schoeffel, Rafal Staszewski. 2013-09-24. Electroweak vector boson production at the LHC as a probe of mechanisms of diffraction. https://doi.org/10.1103/physrevd.84.114006

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