Standard model extended by a heavy singlet: Linear vs. nonlinear EFT

Buchalla, G.; Cata, O.; Celis, A. und Krause, C. (2017): Standard model extended by a heavy singlet: Linear vs. nonlinear EFT. In: Nuclear Physics B, Bd. 917: S. 209-233

Abstract

We consider the Standard Model extended by a heavy scalar singlet in different regions of parameter space and construct the appropriate low-energy effective field theories up to first nontrivial order. This top-down exercise in effective field theory is meant primarily to illustrate with a simple example the systematics of the linear and nonlinear electroweak effective Lagrangians and to clarify the relation between them. We discuss power-counting aspects and the transition between both effective theories on the basis of the model, confirming in all cases the rules and procedures derived in previous works from a bottom-up approach. (C) 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0550-3213
• Sprache: Englisch