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Lisa Carloni, Torbjörn Sjöstrand
Visible Effects of Invisible Hidden Valley Radiation
Abstract
Assuming there is a new gauge group in a Hidden Valley, and a new type of
radiation, can we observe it through its effect on the kinematic
distributions of recoiling visible particles? Specifically, what are the
collider signatures of radiation in a hidden sector? We address these
questions using a generic SU(N)-like Hidden Valley model that we implement
in Pythia. We find that in both the e+e- and the LHC cases the kinematic
distributions of the visible particles can be significantly affected by
the valley radiation. Without a proper understanding of such effects,
inferred masses of "communicators" and of invisible particles can be
substantially off.
LU TP 10-17
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