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Higgs up-down CP asymmetry at the LHC

Cédric Delaunay1, Gilad Perez1,2, Hiroshi de Sandes1, and Witold Skiba1,3

  • 1CERN Physics Department, Theory Division, CH-1211 Geneva 23, Switzerland
  • 2Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100, Israel
  • 3Department of Physics, Yale University, New Haven, Connecticut 06520, USA

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Phys. Rev. D 89, 035004 – Published 11 February, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.035004

Abstract

We propose a new observable designed to probe CP-violating coupling of the Higgs boson to W bosons using associated Higgs production. We define an asymmetry that measures the number of leptons from W decays relative to the plane defined by the beam line and the Higgs boson momentum. The orientation of that plane is determined by the direction of fermions in the initial state, so that in a proton-proton collider it requires rapidity cuts that preferentially select quarks over antiquarks.

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Phys. Rev. D 89, 035004– Published 11 February, 2014
  • Received 12 September 2013

© 2014 American Physical Society

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