scholarly journals Lattice gauge theory and physics beyond the standard model

2012 ◽  
Author(s):  
Joel Giedt
Keyword(s):  
Gauge Theory ◽  
Standard Model ◽  
Lattice Gauge Theory ◽  
Beyond The Standard Model ◽  
Lattice Gauge ◽  
The Standard Model

scholarly journals Lattice gauge theory for physics beyond the Standard Model

2019 ◽  
Vol 55 (11) ◽  
Author(s):  
Richard C. Brower ◽  
◽  
Anna Hasenfratz ◽  
Ethan T. Neil ◽  
Simon Catterall ◽  
...  
Keyword(s):  
Gauge Theory ◽  
Standard Model ◽  
Lattice Gauge Theory ◽  
Beyond The Standard Model ◽  
Lattice Gauge ◽  
The Standard Model

scholarly journals Testing the mechanism of lepton compositeness

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Vincenzo Afferrante ◽  
Axel Maas ◽  
René Sondenheimer ◽  
Pascal Törek
Keyword(s):  
Gauge Theory ◽  
Standard Model ◽  
Gauge Invariance ◽  
Bound States ◽  
Lattice Gauge Theory ◽  
Higgs Field ◽  
Left Handed ◽  
Lattice Gauge ◽  
The Standard Model ◽  
Weyl Fermions

Strict gauge invariance requires that physical left-handed leptons are actually bound states of the elementary left-handed lepton doublet and the Higgs field within the standard model. That they nonetheless behave almost like pure elementary particles is explained by the Fr"ohlich-Morchio-Strocchi mechanism. Using lattice gauge theory, we test and confirm this mechanism for fermions. Though, due to the current inaccessibility of non-Abelian gauged Weyl fermions on the lattice, a model which contains vectorial leptons but which obeys all other relevant symmetries has been simulated.

scholarly journals GAUGE THEORY ON A SPACE WITH LINEAR LIE TYPE FUZZINESS

2013 ◽  
Vol 28 (08) ◽  
pp. 1350021 ◽  
Author(s):  
MOHAMMAD KHORRAMI ◽  
AMIR H. FATOLLAHI ◽  
AHMAD SHARIATI
Keyword(s):  
Gauge Theory ◽  
Standard Model ◽  
Field Strength ◽  
Gauge Field ◽  
Field Component ◽  
Lattice Gauge Theory ◽  
Fourier Space ◽  
Lattice Gauge ◽  
The Standard Model

The U(1) gauge theory on a space with Lie type noncommutativity is constructed. The construction is based on the group of translations in Fourier space, which in contrast to space itself is commutative. In analogy with lattice gauge theory, the object playing the role of flux of field strength per plaquette, as well as the action, is constructed. It is observed that the theory, in comparison with ordinary U(1) gauge theory, has an extra gauge field component. This phenomena is reminiscent of similar ones in formulation of SU (N) gauge theory in space with canonical noncommutativity, and also appearance of gauge field component in discrete direction of Connes' construction of the Standard Model.

scholarly journals Quark flavor physics and lattice QCD

2021 ◽  
Vol 57 (7) ◽  
Author(s):  
Matthew Wingate
Keyword(s):  
Standard Model ◽  
Large Scale ◽  
Flavor Physics ◽  
Weak Interactions ◽  
Lattice Gauge Theory ◽  
Beyond The Standard Model ◽  
Lattice Gauge ◽  
The Standard Model ◽  
Quark Flavor ◽  
Long Time

AbstractFor a long time, investigation into the weak interactions of quarks has guided us toward understanding the Standard Model we know today. Now in the era of high precision, these studies are still one of the most promising avenues for peering beyond the Standard Model. This is a large-scale endeavour with many tales and many protagonists. In these pages I follow a few threads of a complex story, those passing through the realm of lattice gauge theory.

scholarly journals Looking behind the Standard Model with lattice gauge theory

2018 ◽  
Vol 175 ◽  
pp. 01017 ◽  
Author(s):  
Benjamin Svetitsky
Keyword(s):  
Field Theory ◽  
Gauge Theory ◽  
Standard Model ◽  
Recent Work ◽  
Lattice Gauge Theory ◽  
Strongly Coupled ◽  
Lattice Methods ◽  
Lattice Gauge ◽  
The Standard Model ◽  
Coupled Field

Models for what may lie behind the Standard Model often require nonperturbative calculations in strongly coupled field theory. This creates opportunities for lattice methods, to obtain quantities of phenomenological interest as well as to address fundamental dynamical questions. I survey recent work in this area.

scholarly journals Anomalous magnetic moment of the muon with dynamical QCD+QED

2020 ◽  
Vol 245 ◽  
pp. 06035
Author(s):  
Alex Westin ◽  
Waseem Kamleh ◽  
Ross Young ◽  
James Zanotti ◽  
Roger Horsley ◽  
...  
Keyword(s):  
Standard Model ◽  
Magnetic Moment ◽  
Lattice Gauge Theory ◽  
Leading Order ◽  
Model Calculations ◽  
Lattice Gauge ◽  
The Standard Model ◽  
Low Energies ◽  
Novel Method ◽  
Similar Factor

There exists a long standing discrepancy of around 3.5σ between experimental measurements and standard model calculations of the magnetic moment of the muon. Current experiments aim to reduce the experimental uncertainty by a factor of 4, and Standard Model calculations must also be improved by a similar factor. The largest uncertainty in the Standard Model calculation comes from the QCD contribution, in particular the leading order hadronic vacuum polarisation (HVP). To calculate the HVP contribution, we use lattice gauge theory, which allows us to study QCD at low energies. In order to better understand this quantity, we investigate the effect of QED corrections to the leading order HVP term by including QED in our lattice calculations, and investigate flavour breaking effects. This is done using fully dynamical QCD+QED gauge configurations generated by the QCDSF collaboration and a novel method of quark tuning.

Sign in / Sign up

Export Citation Format

Share Document