Accomando, Elena, Becciolini, Diego, De Curtis, Stefania, Dominici, Daniele and Fedeli, Luca
Interference effects in heavy W'-boson searches at the LHC
Physical Review D, 85, (11), . (doi:10.1103/PhysRevD.85.115017).
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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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