scholarly journals Effective field theory interpretation of lepton magnetic and electric dipole moments

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Jason Aebischer ◽  
Wouter Dekens ◽  
Elizabeth E. Jenkins ◽  
Aneesh V. Manohar ◽  
Dipan Sengupta ◽  
...  
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Effective Theory ◽  
Electric Dipole Moments ◽  
Independent Analysis ◽  
The One

Abstract We perform a model-independent analysis of the magnetic and electric dipole moments of the muon and electron. We give expressions for the dipole moments in terms of operator coefficients of the low-energy effective field theory (LEFT) and the Standard Model effective field theory (SMEFT). We use one-loop renormalization group improved perturbation theory, including the one-loop matching from SMEFT onto LEFT, and one-loop lepton matrix elements of the effective-theory operators. Semileptonic four-fermion operators involving light quarks give sizable non-perturbative contributions to the dipole moments, which are included in our analysis. We find that only a very limited set of the SMEFT operators is able to generate the current deviation of the magnetic moment of the muon from its Standard Model expectation.

Electric dipole moment induced by CP-violating deformations in the noncommutative Standard Model

2017 ◽  
Vol 32 (07) ◽  
pp. 1750044 ◽  
Author(s):  
Wei-Jian Wang ◽  
Zhe-Hui Yan ◽  
Rong-Hua Guan ◽  
Xing-Ning Wei
Keyword(s):  
Field Theory ◽  
Dipole Moment ◽  
Standard Model ◽  
Effective Field Theory ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Observable Effect ◽  
Electric Dipole Moments ◽  
Intrinsic Feature

The possibility to detect the noncommutative (NC) spacetime in the electric dipole moments (EDM) experiments is studied in the effective field theory of noncommutative Standard Model (NCSM) with many additional deformations. The EDM given by the previous literatures do not have any observable effect since they are spin-independent. In this work, it is found that three of the deformed terms provide extra sources of CP violation contributed to EDM. We show that these EDMs are sensitive to the spin and thus have potential to be measured in the highly precise experiments. In particular, the EDM induced by NC spacetime may not be parallel to the direction of spin, which demonstrates the intrinsic feature of NC field theory.

scholarly journals Electric dipole moments of light nuclei from chiral effective field theory

2011 ◽  
Vol 84 (6) ◽  
Author(s):  
J. de Vries ◽  
R. Higa ◽  
C.-P. Liu ◽  
E. Mereghetti ◽  
I. Stetcu ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Light Nuclei ◽  
Chiral Effective Field Theory ◽  
Electric Dipole Moments

scholarly journals General non-leptonic ∆F = 1 WET at the NLO in QCD

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Jason Aebischer ◽  
Christoph Bobeth ◽  
Andrzej J. Buras ◽  
Jacky Kumar ◽  
Mikołaj Misiak
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
High Energy ◽  
Effective Field ◽  
Effective Theory ◽  
Leading Order ◽  
The Standard Model ◽  
Complete Set ◽  
The One

Abstract We reconsider the complete set of four-quark operators in the Weak Effective Theory (WET) for non-leptonic ∆F = 1 decays that govern s → d and b → d, s transitions in the Standard Model (SM) and beyond, at the Next-to-Leading Order (NLO) in QCD. We discuss cases with different numbers Nf of active flavours, intermediate threshold corrections, as well as the issue of transformations between operator bases beyond leading order to facilitate the matching to high-energy completions or the Standard Model Effective Field Theory (SMEFT) at the electroweak scale. As a first step towards a SMEFT NLO analysis of K → ππ and non-leptonic B-meson decays, we calculate the relevant WET Wilson coefficients including two-loop contributions to their renormalization group running, and express them in terms of the Wilson coefficients in a particular operator basis for which the one-loop matching to SMEFT is already known.

scholarly journals Nuclear electric dipole moments in chiral effective field theory

2015 ◽  
Vol 2015 (3) ◽  
Author(s):  
J. Bsaisou ◽  
J. de Vries ◽  
C. Hanhart ◽  
S. Liebig ◽  
Ulf-G. Meißner ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Chiral Effective Field Theory ◽  
Electric Dipole Moments

scholarly journals Electric dipole moments of three-nucleon systems in the pionless effective field theory

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Zichao Yang ◽  
Emanuele Mereghetti ◽  
Lucas Platter ◽  
Matthias R. Schindler ◽  
Jared Vanasse
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Electric Dipole Moments

scholarly journals Erratum to: Nuclear electric dipole moments in chiral effective field theory

2015 ◽  
Vol 2015 (5) ◽  
Author(s):  
J. Bsaisou ◽  
J. de Vries ◽  
C. Hanhart ◽  
S. Liebig ◽  
Ulf-G. Meißner ◽  
...  
Keyword(s):  
Field Theory ◽  
Effective Field Theory ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Effective Field ◽  
Chiral Effective Field Theory ◽  
Electric Dipole Moments

scholarly journals The one-loop tadpole in the geoSMEFT

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Tyler Corbett
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
Effective Field ◽  
Power Counting ◽  
Leading Order ◽  
The Standard Model ◽  
The One ◽  
Near Future ◽  
Geometric Formulation

Making use of the geometric formulation of the Standard Model Effective Field Theory we calculate the one-loop tadpole diagrams to all orders in the Standard Model Effective Field Theory power counting. This work represents the first calculation of a one-loop amplitude beyond leading order in the Standard Model Effective Field Theory, and discusses the potential to extend this methodology to perform similar calculations of observables in the near future.

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