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Off-Shell Higgs Coupling Measurements in BSM scenarios

Englert, Christoph; Soteq, Yotam; Spannowsky, Michael

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Christoph Englert

Yotam Soteq


Proposals of measuring the off-shell Higgs contributions and first measurements at the LHC have electrified the Higgs phenomenology community for two reasons: firstly, probing interactions at high invariant masses and momentum transfers is intrinsically sensitive to new physics beyond the Standard Model, irrespective of a resonant or non-resonant character of a particular BSM scenario. Secondly, under specific assumptions a class of models exists for which the off-shell coupling measurement together with a measurement of the on-shell signal strength can be re-interpreted in terms of a bound on the total Higgs boson width. In this paper, we provide a first step towards a classification of the models for which a total width measurement is viable and we discuss examples of BSM models for which the off-shell coupling measurement can be important in either constraining or even discovering new physics in the upcoming LHC runs. Specifically, we discuss the quantitative impact of the presence of dimension six operators on the (de)correlation of Higgs on- and off-shell regions keeping track of all interference effects. We furthermore investigate off-shell measurements in a wider context of new (non-)resonant physics in Higgs portal scenarios and the MSSM.


Englert, C., Soteq, Y., & Spannowsky, M. (2015). Off-Shell Higgs Coupling Measurements in BSM scenarios. Journal of High Energy Physics, 2015(05), Article 145.

Journal Article Type Article
Acceptance Date May 12, 2015
Online Publication Date May 27, 2015
Publication Date May 27, 2015
Deposit Date Nov 10, 2016
Publicly Available Date Mar 15, 2017
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2015
Issue 05
Article Number 145


Published Journal Article (938 Kb)

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Copyright Statement
This article is distributed under the terms of the Creative Commons<br /> Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in<br /> any medium, provided the original author(s) and source are credited.

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