Effective theory analysis of precision electroweak data

By Zhenyu Han, W. Skiba. 2004

218 citations recorded by the source corpus.

We obtain the bounds on arbitrary linear combinations of operators of dimension 6 in the Standard Model. We consider a set of 21 flavor and CP conserving operators. Each of our 21 operators is tightly constrained by the standard set of electroweak measurements. We perform a fit to all relevant precision electroweak data and include neutrino scattering experiments, atomic parity violation, W mass, LEP1, SLD, and LEP2 data. Our results provide an efficient way of obtaining bounds on weakly coupled extensions of the standard model.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7c016a8bec52f96bcca45c09d8435d63eb5e347d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. John Ellis
2. T. You
3. B. Henning
4. Juan Rojo
5. Veronica Sanz
6. H. Murayama
7. Xiaochuan Lu
8. Fabio Maltoni

In Nuclear and High Energy Physics

1. T. You
2. John Ellis
3. Veronica Sanz
4. A. Falkowski
5. B. Henning
6. H. Murayama
7. Xiaochuan Lu
8. E. Vryonidou

Citations in the corpus

• Model-independent precision constraints on dimension-6 operators (2014, background): “These constraints have been discussed in the literature [5, 6, 10, 12, 15, 16, 18–20], however a general and quantitative analysis that is easily interpretable in the context of different sets of operators and is therefore easily applicable to different new physics models is still missing.”
• Renormalization group evolution of the Standard Model dimension six operators III: gauge coupling dependence and phenomenology (2013, unknown): “[28–31], and these terms are consistent with our calculation.”
• Les Houches lectures on effective field theories and gravitational radiation (2007, methodology): “ 4 constructed from Standard Model fields [21], certain linear combinations of which have been constrained experimentally using collider data from the LEP experiments at CERN and from SLD at SLAC (see [22] for a recent analysis of precision electroweak constraints using effective Lagrangians). If the”
• Top, Higgs, diboson and electroweak fit to the Standard Model effective field theory (2020, background): “These and other theoretical developments have laid the groundwork for phenomenological SMEFT analyses of available data to go beyond fitting subsets of specific operators towards global fits in a complete basis of operators, beginning with early global SMEFT fits to electroweak precision data [94] t”
• Compilation of low-energy constraints on 4-fermion operators in the SMEFT (2017, background): “Previous global SMEFT analyses targeting these operators [9, 10, 40] were carried out assuming some simplifying flavor structure, such as the U(3)(5) symmetry [9], which greatly reduces the number of independent Wilson coefficients.”