RT Journal Article
T1 Coupling WW, ZZ unitarized amplitudes to gamma gamma in the TeV region
A1 Delgado López, Rafael
A1 Dobado González, Antonio
A1 Llanes Estrada, Felipe José
AB We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to γ γ , employing (to NLO) the Higgs-EFT (HEFT) extension of the Standard Model and the Equivalence Theorem, while neglecting all particle masses. The resulting amplitudes can be useful in the energy regime (500 GeV−3 TeV). We also deal with their unitarization so that resonances of the EWSBS can simultaneously be described in the γ γ initial or final states. Our resulting amplitudes satisfy unitarity, perturbatively in α, but for all s values. In this way we improve on the HEFT that fails as interactions become stronger with growing s and we provide a natural framework for the decay of dynamically generated resonances into W W, Z Z and γ γ pairs.
PB Springer
SN 1434-6044
YR 2017
FD 2017-03-31
LK https://hdl.handle.net/20.500.14352/18243
UL https://hdl.handle.net/20.500.14352/18243
LA eng
NO © The Author(s) 2017. We thank for useful conversation and suggestions J.J. Sanz-Cillero, D. Espriu, and M.J. Herrero. Work supported by Spanish MINECO Grants FPA2011-27853-C02-01, FPA2014-53375-C2-1- P and BES-2012-056054 (RLD).
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 7 abr 2025