Higgs and Effective Field Theory - HEFT 2021

Session

4.16 afternoon

16 Apr 2021, 15:00

科大东区物质科研楼3楼报告厅 and Zoom online

Conveners

4.16 afternoon

• Shuang-Yong Zhou (University of Science and Technology of China)

4.16 afternoon

• There are no conveners in this block

Contribution list Timetable

52. S-matrix Bootstrap for Effective Field Theory

Joao PENEDONES

16/04/2021, 15:00

53. Effective Field Theories and Positivity Bounds

Andrew Tolley

16/04/2021, 15:30

54. Positivity bounds on Minimal Flavor Violation

Emanuele Gendy

16/04/2021, 16:00

Effective Field Theories are a very powerful mean to describe theories at energies well below a certain cutoff scale. However, not all points in the parameter space spanned by their coefficients allow for a UV completion that is both unitary and analytic, and various bounds have been derived in the literature. I will discuss to what extent are these bounds compatible with the Minimal Flavor...

55. An unambiguous test of positivity at lepton colliders

Dr Jiayin Gu (JGU Mainz)

16/04/2021, 16:25

The diphoton channel at lepton colliders, e+e−(μ+μ−)→γγ, has a remarkable feature that the leading new physics contribution comes only from dimension-eight operators. This contribution is subject to a set of positivity bounds, derived from fundamental principles of Quantum Field Theory, such as unitarity, locality and analyticity. These positivity bounds are thus applicable to the most direct...

56. Wilson is not anomalous: on gauge anomalies in SMEFT

Alejo ROSSIA

16/04/2021, 17:10

Can higher-dimensional operators in an EFT generate gauge anomalies if the renormalizable part of the EFT is anomaly-free? When are certain Wilson Coefficients dictated by the global anomalies of the UV sector? These 2 questions, which cover both directions in the relationship between anomalies and Wilson Coefficients, can be answered with similar techniques. Here, I will discuss whether...

57. Higher order renormalisation in scalar effective field theory

Jasper ROOSMALE NEPVEU

16/04/2021, 17:35

There exist relations between operators in effective field theory (EFT) Lagrangians due to the freedom to perform field redefinitions and integration by parts. Recent progress in the characterisation of operators that are independent under such redundancies led to a particular basis that we call the "conformal basis". Since the conformal basis is mathematically singled out, it is interesting...

58. Diagrammatic one-loop renormalization within the EChL in the Rxi gauges and applications to scattering and decays

Roberto MORALES

16/04/2021, 18:00

Effective field theories (EFTs) are an incredibly powerful tool in order to study and understand the true nature of the symmetry breaking sector dynamics of the Standard Model. The most general EFT, appropriate in the case that the new ultraviolet physics beyond the SM be strongly interacting, is the Electroweak Chiral Lagrangian (EChL) or Higgs Effective field theory (HEFT). We work here just...