publication . Other literature type . Article . Preprint . 2014

Higgs ultraviolet softening

Maria Concepcion Gonzalez Garcia; oscar eboli; Luca Merlo; Ilaria Brivio;
Open Access
  • Published: 01 Dec 2014
  • Publisher: Springer Science and Business Media LLC
  • Country: Italy
Abstract
We analyze the leading effective operators which induce a quartic momentum dependence in the Higgs propagator, for a linear and for a non-linear realization of electroweak symmetry breaking. Their specific study is relevant for the understanding of the ultraviolet sensitivity to new physics. Two methods of analysis are applied, trading the Lagrangian coupling by: i) a "ghost" scalar, after the Lee-Wick procedure; ii) other effective operators via the equations of motion. The two paths are shown to lead to the same effective Lagrangian at first order in the operator coefficients. It follows a modification of the Higgs potential and of the fermionic couplings in t...
Subjects
arXiv: High Energy Physics::PhenomenologyHigh Energy Physics::Lattice
free text keywords: High Energy Physics - Phenomenology, Nuclear and High Energy Physics
Funded by
EC| UNILHC
Project
UNILHC
UNIFICATION IN THE LHC ERA
  • Funder: European Commission (EC)
  • Project Code: 237920
  • Funding stream: FP7 | SP3 | PEOPLE
,
EC| INVISIBLES
Project
INVISIBLES
INVISIBLES
  • Funder: European Commission (EC)
  • Project Code: 289442
  • Funding stream: FP7 | SP3 | PEOPLE

[1] T.D. Lee and G.C. Wick, Finite theory of quantum electrodynamics, Phys. Rev. D 2 (1970) [2] T.D. Lee and G.C. Wick, Negative metric and the unitarity of the S matrix, Nucl. Phys. B 9 [3] B. Grinstein, D. O'Connell and M.B. Wise, The Lee-Wick standard model, Phys. Rev. D 77 [5] R.E. Cutkosky, P.V. Landshoff, D.I. Olive and J.C. Polkinghorne, A non-analytic S matrix, [6] S. Coleman, Acausality, in Erice 1969, Ettore Majorana school on subnuclear phenomena, A. [OpenAIRE]

[20] I. Brivio et al., Disentangling a dynamical Higgs, JHEP 03 (2014) 024 [arXiv:1311.1823] [21] E. Alvarez, L. Da Rold, C. Schat and A. Szynkman, Electroweak precision constraints on the Lee-Wick standard model, JHEP 04 (2008) 026 [arXiv:0802.1061] [INSPIRE].

[22] C.D. Carone, R. Ramos and M. Sher, LHC constraints on the Lee-Wick Higgs sector, Phys. s = 7 and 8 TeV, JHEP 06 (2013) 081 [arXiv:1303.4571] [INSPIRE].

[39] J.M. Campbell, R.K. Ellis and C. Williams, Bounding the Higgs width at the LHC using full [40] A. Brunstein, O.J.P. E´boli and M.C. Gonzalez-Garc´ıa, Constraints on quartic vector boson interactions from Z physics, Phys. Lett. B 375 (1996) 233 [hep-ph/9602264] [INSPIRE].

[41] O.J.P. E´boli, M.C. Gonzalez-Garc´ıa and J.K. Mizukoshi, pp → jje±μ±νν and jje±μ±νν at

Abstract
We analyze the leading effective operators which induce a quartic momentum dependence in the Higgs propagator, for a linear and for a non-linear realization of electroweak symmetry breaking. Their specific study is relevant for the understanding of the ultraviolet sensitivity to new physics. Two methods of analysis are applied, trading the Lagrangian coupling by: i) a "ghost" scalar, after the Lee-Wick procedure; ii) other effective operators via the equations of motion. The two paths are shown to lead to the same effective Lagrangian at first order in the operator coefficients. It follows a modification of the Higgs potential and of the fermionic couplings in t...
Subjects
arXiv: High Energy Physics::PhenomenologyHigh Energy Physics::Lattice
free text keywords: High Energy Physics - Phenomenology, Nuclear and High Energy Physics
Funded by
EC| UNILHC
Project
UNILHC
UNIFICATION IN THE LHC ERA
  • Funder: European Commission (EC)
  • Project Code: 237920
  • Funding stream: FP7 | SP3 | PEOPLE
,
EC| INVISIBLES
Project
INVISIBLES
INVISIBLES
  • Funder: European Commission (EC)
  • Project Code: 289442
  • Funding stream: FP7 | SP3 | PEOPLE

[1] T.D. Lee and G.C. Wick, Finite theory of quantum electrodynamics, Phys. Rev. D 2 (1970) [2] T.D. Lee and G.C. Wick, Negative metric and the unitarity of the S matrix, Nucl. Phys. B 9 [3] B. Grinstein, D. O'Connell and M.B. Wise, The Lee-Wick standard model, Phys. Rev. D 77 [5] R.E. Cutkosky, P.V. Landshoff, D.I. Olive and J.C. Polkinghorne, A non-analytic S matrix, [6] S. Coleman, Acausality, in Erice 1969, Ettore Majorana school on subnuclear phenomena, A. [OpenAIRE]

[20] I. Brivio et al., Disentangling a dynamical Higgs, JHEP 03 (2014) 024 [arXiv:1311.1823] [21] E. Alvarez, L. Da Rold, C. Schat and A. Szynkman, Electroweak precision constraints on the Lee-Wick standard model, JHEP 04 (2008) 026 [arXiv:0802.1061] [INSPIRE].

[22] C.D. Carone, R. Ramos and M. Sher, LHC constraints on the Lee-Wick Higgs sector, Phys. s = 7 and 8 TeV, JHEP 06 (2013) 081 [arXiv:1303.4571] [INSPIRE].

[39] J.M. Campbell, R.K. Ellis and C. Williams, Bounding the Higgs width at the LHC using full [40] A. Brunstein, O.J.P. E´boli and M.C. Gonzalez-Garc´ıa, Constraints on quartic vector boson interactions from Z physics, Phys. Lett. B 375 (1996) 233 [hep-ph/9602264] [INSPIRE].

[41] O.J.P. E´boli, M.C. Gonzalez-Garc´ıa and J.K. Mizukoshi, pp → jje±μ±νν and jje±μ±νν at

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