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One-loop WLWL and ZLZL scattering from the electroweak Chiral Lagrangian with a light Higgs-like scalar

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Llanes Estrada, Felipe José and Delgado López, Rafael and Dobado González, Antonio (2014) One-loop WLWL and ZLZL scattering from the electroweak Chiral Lagrangian with a light Higgs-like scalar. Journal of High Energy Physics (2). ISSN 1029-8479

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Official URL: http://dx.doi.org/10.1007/JHEP02(2014)121


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Abstract

By including the recently discovered Higgs-like scalar phi in the Electroweak Chiral Lagrangian, and using the Equivalence Theorem, we carry out the complete one-loop computation of the elastic scattering amplitude for the longitudinal components of the gauge bosons V = W, Z at high energy. We also compute phi phi -> phi phi and the inelastic process V V -> phi phi, and identify the counterterms needed to cancel the divergences, namely the well known a(4) and a(5) chiral parameters plus three additional ones only superficially treated in the literature because of their dimension 8. Finally we compute all the partial waves and discuss the limitations of the one-loop computation due to only approximate unitarity.


Item Type:Article
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Open Access, © The Authors.
AD thanks useful conversations with D. Espriu, M. J. Herrero and J. J. Sanz-Cillero. The work has been supported by the spanish grant FPA2011-27853-C02-01 and by the grant BES-2012-056054 (RLD).

Uncontrolled Keywords:Symmetry-Breaking Sector, Strongly Interacting Ws, Composite Higgs, Technicolor Theories, Vacuum Misalignment, Perturbation-Theory, Weak Interactions, Standard Model, Atlas Detector, PP Collisions
Subjects:Sciences > Physics
ID Code:25642
Deposited On:12 Jun 2014 15:18
Last Modified:20 Apr 2018 18:11

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