1202.0901 (Rick Field)

Min-Bias and the Underlying Event at the LHC    [PDF]

Rick Field

The CDF PYTHIA 6.2 Tune DW predictions for the behavior of the LHC underlying
event (UE) data at 900 GeV and 7 TeV are examined in detail. The behavior of
the UE at the LHC is roughly what we expected. The LHC PYTHIA 6.4 Tune Z1 does
an excellent job describing the UE data at 900 GeV and 7 TeV. Both Tune DW and
Tune Z1 describe fairly well the Drell-Yan UE data at 1.96 TeV and 7 TeV. No
model describes all the features of "min-bias" (MB) collisions at 900 GeV and 7
TeV.

View original: http://arxiv.org/abs/1202.0901