Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 19: Beyond the Standard Model (Theorie) III

T 19.6: Vortrag

Mittwoch, 17. März 2010, 15:15–15:30, HG XIV

Analysis of a Multi-Muon Signal at Collider and Fixed-Target Experiments — •Nicki Bornhauser — Universität Bonn

In October 2008 the CDF Collaboration published a study about multi-muon events produced in p p collisions at √s = 1.96 TeV [arXiv:0810.5357v2 [hep-ex]]. They claim that a significant number of events, in which at least one muon is produced outside of the beam pipe, cannot be explained by known SM QCD production. These are called ghost events. We ask the question: would you expect to have measured ghost events in already carried out collider and fixed-target experiments? The ghost events can be reproduced by a simple model including a low-GeV mass parent particle. Especially in certain fixed-target experiments you would expect a significant number of ghost events.