Interference effects in heavy W'-boson searches at the LHC

Details Interference effects in heavy W'-boson searches at the LHC Interference effects in heavy W'-boson searches at the LHC

2011-10-04

arxiv.org/abs/1110.0713v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 8 figures

Scientific paper

Interference effects are widely neglected in searches for new physics. This is the case in recent publications on searches for W'-bosons using leptonic final states. We examine the effects of interference on distributions frequently used to determine mass limits for possible W'-bosons and show that there are important qualitative effects on the behaviour of the new physics signal. There are two main consequences. The first is that current exclusion limits, where interferences effects have not been considered, are likely to have been overestimated. The second is that the way observed limits on the cross-section are presented, in terms of the contribution of new physics to the total cross-section, is not meaningful.

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