Electroweak theory and global fit
1 INFN, Sezione di Roma Tre, Via della Vasca Navale 84, I-00146, Roma, Italy
2 INFN, Sezione di Roma, Piazzale A. Moro 2, I-00185, Roma, Italy
3 Dipartimento di Fisica, Università di Roma “La Sapienza”, Piazzale A. Moro 2, I-00185, Roma, Italy
a e-mail: Marco.Ciuchini@roma3.infn.it
b e-mail: Enrico.Franco@roma1.infn.it
c e-mail: Satoshi.Mishima@roma1.infn.it
d e-mail: Luca.Silvestrini@roma1.infn.it
Published online: 26 November 2013
We perform the fit of electroweak precision observables within the Standard Model with a 126 GeV Higgs boson, compare the results with the theoretical predictions and discuss the impact of recent experimental and theoretical improvements. We introduce New Physics contributions in a model-independent way and fit for the S, T and U parameters and for a modified Higgs coupling to vector bosons. We point out that composite Higgs models are very strongly constrained. Finally, we compute the bounds on dimension-six operators relevant for the electroweak fit.
© Owned by the authors, published by EDP Sciences, 2013
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