Visible Effects of Invisible Hidden Valley Radiation

Details Visible Effects of Invisible Hidden Valley Radiation Visible Effects of Invisible Hidden Valley Radiation

2010-06-15

arxiv.org/abs/1006.2911v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 28 figures removed figure titles,updated 2 references,corrected typos

Scientific paper

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.

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