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

Interference effects in heavy W'-boson searches at the LHC
Interference effects in heavy W'-boson searches at the LHC
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.
1550-7998
115017
Accomando, Elena
8ebc75d7-bd92-4f70-a974-7bc15ebf088f
Becciolini, Diego
7a139b0e-a41b-4d6c-b22b-ac19c20c0050
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Dominici, Daniele
aca95683-a4dd-4521-ab76-e132b61c6c58
Fedeli, Luca
1ddd6a40-9ad1-4453-9eda-b2122d20878b
Accomando, Elena
8ebc75d7-bd92-4f70-a974-7bc15ebf088f
Becciolini, Diego
7a139b0e-a41b-4d6c-b22b-ac19c20c0050
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Dominici, Daniele
aca95683-a4dd-4521-ab76-e132b61c6c58
Fedeli, Luca
1ddd6a40-9ad1-4453-9eda-b2122d20878b

Accomando, Elena, Becciolini, Diego, De Curtis, Stefania, Dominici, Daniele and Fedeli, Luca (2011) Interference effects in heavy W'-boson searches at the LHC. Physical Review D, 85 (11), 115017. (doi:10.1103/PhysRevD.85.115017).

Record type: Article

Abstract

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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Published date: October 2011
Organisations: Theoretical Partical Physics Group

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Local EPrints ID: 339112
URI: https://eprints.soton.ac.uk/id/eprint/339112
ISSN: 1550-7998
PURE UUID: d5b87f99-642f-47ec-a2af-b73760251b53

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Date deposited: 24 May 2012 09:18
Last modified: 16 Jul 2019 22:03

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