Strongly interacting WLWL, Z(L)Z(L) and hh from unitarized one-loop computations



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Delgado López, Rafael and Dobado González, Antonio and Llanes Estrada, Felipe José (2016) Strongly interacting WLWL, Z(L)Z(L) and hh from unitarized one-loop computations. Nuclear and particle physics proceedings, 273 . pp. 2436-2438. ISSN 2405-6014

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Recently, a new boson h has been discovered at the LHC which, so far, is compatible with the properties of the SM Higgs. However, the SM is not the most general low-energy dynamics for the minimal electroweak symmetry breaking sector with three Goldstone bosons and one light scalar. By using non-linear effective Lagrangian for these four particles we study different processes at one-loop precision, identifying the counterterms needed to cancel the divergences. Then we apply the IAM unitarization method on the partial waves, both to make more realistic predictions which could be tested at the LHC and to discuss the limitations of the one-loop computations. The studied processes are the elastic scattering amplitude for both the longitudinal components of the gauge bosons V = W, Z and the hh → hh, as well as the inelastic VV → hh.

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© 2016 Elsevier B.V. International Conference on High Energy Physics (ICHEP) (37th. 2014. Valencia, Spain). RLD thanks the hospitality of the NEXT institute and the high energy group at the University of Southampton. The authors thank J. R. Peláez for bringing ref. [16] to their attention. We acknowledge the computer resources, technical expertise, and assistance provided by the BCS and the Tirant supercomputer staff at Valencia. Work supported by spanish grants FPA2011-27853- C02-01 and BES-2012-056054 (RLD).

Uncontrolled Keywords:Atlas detector; Higgs-boson; Equivalence theorem; Standard model; PP collision; Search; Mass; LHC; CMS; WS
Subjects:Sciences > Physics > Physics-Mathematical models
ID Code:42514
Deposited On:08 May 2017 11:03
Last Modified:08 May 2017 14:04

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