May 15 – 20, 2017
Shanghai Jiao Tong University
Asia/Shanghai timezone
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Standard Model Extended by a Heavy Singlet: Linear vs. Nonlinear EFT

May 16, 2017, 2:00 PM
Haoran 102 (Shanghai Jiao Tong University)

Haoran 102

Shanghai Jiao Tong University

Xuhui Campus


Alejandro Celis (IFIC CSIC-Universitat de Valencia)


I consider the Standard Model extended by a heavy scalar singlet and derive the low-energy effective theory resulting from integrating out the heavy state. This exercise in effective field theory serves to illustrate with a simple example the systematics of the linear and nonlinear electroweak effective Lagrangians and to clarify the relation between them. I discuss power-counting aspects and the transition between both effective theories on the basis of the model.

Primary authors

Alejandro Celis (IFIC CSIC-Universitat de Valencia) Oscar Cata Dr Claudius Krause (IFIC Valencia) Gerhard Buchalla (LMU Munich)

Presentation materials