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Structure of dimension-six derivative interactions in pseudo-Nambu-Goldstone N Higgs doublet models

Yohei Kikuta*, Yasuhiro Okada†, and Yasuhiro Yamamoto‡

  • KEK Theory Center, Institute of Particle and Nuclear Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan and Department of Particle and Nuclear Physics, Graduate University for Advanced Studies (Sokendai), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

  • *kikuta@post.kek.jp
  • †yasuhiro.okada@kek.jp
  • ‡yamayasu@post.kek.jp
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Phys. Rev. D 85, 075021 – Published 24 April, 2012

DOI: https://doi.org/10.1103/PhysRevD.85.075021

Abstract

We derive the general structure of dimension-six derivative interactions in the N Higgs doublet models, where Higgs fields arise as pseudo Nambu-Goldstone modes of a strongly interacting sector. We show that there are several relations among the dimension-six operators, and therefore the number of independent operators decreases compared with models on which only SU(2)L×U(1)Y invariance is imposed. As an explicit example, we derive scattering amplitudes and cross sections of longitudinal gauge bosons and Higgs bosons at high energy on models involving two Higgs doublets, and compare them with those of one Higgs doublet.

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Phys. Rev. D 85, 075021– Published 24 April, 2012
  • Received 9 November 2011

© 2012 American Physical Society

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