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Collider bounds on Lee-Wick Higgs bosons

Ezequiel Alvarez

Estefania Coluccio Leskow

José Zurita

  • CONICET, IFIBA, INFAP and Departamento de Física, FCFMN, Universidad Nacional de San Luis, Av. Ejercito de Los Andes 950, San Luis, Argentina

  • Departamento de Física, FCEyN, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 1, (1428) Buenos Aires, Argentina

  • Institut für Theoretische Physik, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland

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Phys. Rev. D 83, 115024 – Published 24 June, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.115024

Abstract

We study the constraints on the Lee-Wick Higgs sector arising from direct collider searches. We work in an effective-field theory framework, where all of the Lee-Wick partners are integrated out, with the sole exception of the Lee-Wick Higgs bosons. The resulting theory is a two-Higgs doublet model where the second doublet has wrong-sign kinetic and mass terms. We include the bounds coming from direct Higgs searches at both LEP and Tevatron using the code HiggsBounds, and show the currently excluded parameter space. We also analyze the prospects of LHC Run-I, finding that with a total integrated luminosity of 5  fb−1 and a center-of-mass energy of 7 TeV, most of the parameter space for the standard model-like CP-even Higgs will be probed.

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Phys. Rev. D 83, 115024– Published 24 June, 2011
  • Received 25 April 2011

© 2011 American Physical Society

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