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arXiv · hep-ph/9605444

Probing color-singlet exchange in $Z+2$-jet events at the LHC

D. Rainwater·R. Szalapski·D. Zeppenfeld
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Abstract

The purely electroweak process $qq\to qqZ$ (via $t$-channel $γ/Z$ or $W$ exchange) provides a copious and fairly clean source of color-singlet exchange events in $pp$ collisions at the LHC. A judicious choice of phase-space region allows the suppression of QCD backgrounds to the level of the signal. The color-singlet-exchange signal can be distinguished from QCD backgrounds by the radiation patterns of additional minijets in individual events. A rapidity-gap trigger at the minijet level substantially enhances the signal versus the background. Analogous features of weak boson scattering events make $Z+2$-jet events at the LHC an ideal laboratory for investigation of the soft-jet activity expected in weak-boson scattering events.

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D. Rainwater, R. Szalapski, D. Zeppenfeld. 1996-05-30. Probing color-singlet exchange in $Z+2$-jet events at the LHC. https://doi.org/10.1103/physrevd.54.6680

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