Higgs self-coupling measurements at a 100 TeV hadron collider

Barr, A. J., Dolan, M. J., Englert, C. , de Lima, D. E. F. and Spannowsky, M. (2015) Higgs self-coupling measurements at a 100 TeV hadron collider. Journal of High Energy Physics, 2015(2), 16. (doi: 10.1007/JHEP02(2015)016)

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An important physics goal of a possible next-generation high-energy hadron collider will be precision characterisation of the Higgs sector and electroweak symmetry breaking. A crucial part of understanding the nature of electroweak symmetry breaking is measuring the Higgs self-interactions. We study dihiggs production in proton-proton collisions at 100 TeV centre of mass energy in order to estimate the sensitivity such a machine would have to variations in the trilinear Higgs coupling around the Standard Model expectation. We focus on the bb¯γγ final state, including possible enhancements in sensitivity by exploiting dihiggs recoils against a hard jet. We find that it should be possible to measure the trilinear self-coupling with 40% accuracy given 3/ab and 12% with 30/ab of data.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Englert, Professor Christoph
Authors: Barr, A. J., Dolan, M. J., Englert, C., de Lima, D. E. F., and Spannowsky, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of High Energy Physics
Publisher:Springer Berlin Heidelberg
ISSN (Online):1029-8479
Copyright Holders:Copyright © 2015 The Authors
First Published:First published in Journal of High Energy Physics 2015(2):16
Publisher Policy:Reproduced under a Creative Commons License

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