Higgs Couplings: Disentangling New Physics with Off-Shell Measurements

Giacomo Cacciapaglia, Aldo Deandrea, Guillaume Drieu La Rochelle, and Jean-Baptiste Flament
Phys. Rev. Lett. 113, 201802 – Published 11 November 2014

Abstract

After the discovery of a scalar resonance, resembling the Higgs boson, its couplings have been extensively studied via the measurement of various production and decay channels on the invariant mass peak. Recently, the possibility of using off-shell measurements has been suggested: in particular, the CMS Collaboration has published results based on the high-invariant mass cross section of the process ggZZ, which contains a contribution from the Higgs boson. While this measurement has been interpreted as a constraint on the Higgs width after very specific assumptions are taken on the Higgs couplings, in this Letter, we show that a much more model-independent interpretation is possible.

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  • Received 1 July 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.201802

© 2014 American Physical Society

Authors & Affiliations

Giacomo Cacciapaglia*, Aldo Deandrea, Guillaume Drieu La Rochelle, and Jean-Baptiste Flament§

  • Université de Lyon, F-69622 Lyon, France and Université Lyon 1, Villeurbanne, CNRS/IN2P3, UMR5822, Institut de Physique Nucléaire de Lyon, F-69622 Villeurbanne Cedex, France

  • *g.cacciapaglia@ipnl.in2p3.fr
  • deandrea@ipnl.in2p3.fr
  • g.drieu-la-rochelle@ipnl.in2p3.frr
  • §j-b.flament@ipnl.in2p3.fr

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Issue

Vol. 113, Iss. 20 — 14 November 2014

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