Soft QCD Results from CDF

TL;DR

This paper reviews recent CDF measurements on underlying events, diffraction, and exclusive processes, providing essential data for baseline understanding at the LHC, including studies of minimum bias, diffractive W/Z, and exclusive meson production.

Contribution

It presents new experimental results on underlying event characteristics, diffraction, and exclusive processes, establishing benchmarks for future LHC studies.

Findings

Measurements of underlying event in Drell-Yan and dijet events

Observation of exclusive dijets and $oldsymbol{ ext{chi}}_{c0}$ mesons

Results on diffraction and rapidity gap production

Abstract

We review the latest underlying event and minimum bias results and discuss the associated problematics with the idea of establishing a solid baseline for the LHC experiments. These measurements include study of the underlying event in Drell-Yan and dijet events, and inclusive differential (in $p_T$) cross sections of centrally ($\mid\eta\mid <$1) produced lambdas, cascades and omegas. We also present recent results on diffraction obtained by the CDF collaboration. Single-diffractive W and Z production is discussed. The first experimental observation of exclusive dijets, exclusive $\chi_{c0}$ mesons, and a search for exclusive diphotons are discussed. We also present results from a study of central rapidity gap production in soft and hard diffractive events.