… In a very short time the experiments at the LHC have collected a large amount of data that
can be used to study minimum bias (MB) collisions and the underlying event (UE) in great …

… study the “underlying event” [2–6]. In Run 2 at CDF we study the “underlying event” using the
… (JetClu, R = 0.7) to isolate regions of η-φ space that are sensitive to the “underlying event”. …

… and PHOJET Monte Carlo event generators used to describe … properties of minimum bias
and the underlying event at the … a wide range of minimum bias and underlying event data we …

… minimum bias events are defined by experimental triggers and include a component of double
diffractive events, we have simulated minimum bias events … For the underlying event we …

… Properties of Minimum Bias and the Underlying Event have previously been studied over
a wide range of energies. In particular, results from experiments at CERN and Fermilab have …

… The MPI are experiencing a growing popularity and are currently widely invoked to account
for observations that would not be explained otherwise: the activity of the Underlying Event, …

… on minimum-bias ad underlying event in p p collisions at 2 TeV. After proposing an operative
definition of “underlying event”, … of the underlying event and possible event topologies are …

… Minimum Bias events and triggers From the experimental point of view, a minimum bias
events … Meanwhile a totally inclusive trigger, or called zero bias trigger, corresponds to a …

… Table 2 summarises the main results of this section for the biases, δρ, and the event-toevent …
the biases and fluctuations intrinsic to the soft component and for the additional biases that …

This chapter is sub-divided in four sections. The next section gives the definition of “min-bias”
and “underlying event”. A brief review of the current status of the phenomenological studies …