One-loop effective lagrangian for an extension of the standard model with a heavy charged scalar singlet

作者: Mikhail Bilenky , Arcadi Santamaria

DOI: 10.1016/0550-3213(94)90375-1

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摘要: Abstract We study several problems related to the construction and use of effective lagrangians by considering an extension standard model that includes a heavy scalar singlet coupled leptonic doublet. Starting from full renormalizable model, we build field theory integrating out scalar. A local lagrangian (up operators dimension six) is obtained expanding one-loop action in inverse powers mass. Using this simple example renormalization general discuss how they can be used bound new physics. also after spontaneous symmetry breaking, classical equations motion rewrite it different forms. The final physical basis well suited phenomenology which comment on briefly. Finally, as our theory, consider flavour-changing decay Z-boson compare results with calculation.

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