Results 91 to 100 of about 196,051 (181)

A new theory framework for the electroweak radiative corrections in K l3 decays

Journal of High Energy Physics, 2020
We propose a new theory framework to study the electroweak radiative corrections in K l3 decays by combining the classic current algebra approach with the modern effective field theory. Under this framework, the most important O $$ \mathcal{O} $$ (G F α)
Chien-Yeah Seng, Daniel Galviz, Ulf-G. Meißner   +2 more
doaj   +1 more source

Remarks on the pion–nucleon σ-term

Physics Letters B, 2016
The pion–nucleon σ-term can be stringently constrained by the combination of analyticity, unitarity, and crossing symmetry with phenomenological information on the pion–nucleon scattering lengths. Recently, lattice calculations at the physical point have
Martin Hoferichter, Jacobo Ruiz de Elvira, Bastian Kubis, Ulf-G. Meißner   +3 more
doaj   +1 more source

A proof of concept for matchete: an automated tool for matching effective theories. [PDF]

Eur Phys J C Part Fields, 2023
Fuentes-Martín J, König M, Pagès J, Thomsen AE, Wilsch F.   +4 more
europepmc   +1 more source

Vector two-point functions in finite volume using partially quenched chiral perturbation theory at two loops

Journal of High Energy Physics, 2017
We calculate vector-vector correlation functions at two loops using partially quenched chiral perturbation theory including finite volume effects and twisted boundary conditions.
Johan Bijnens, Johan Relefors
doaj   +1 more source

Hadronic light-by-light contribution to aμ: extended Nambu-Jona-Lasinio, chiral quark models and chiral Lagrangians

EPJ Web of Conferences, 2016
This talk discusses our old work on the hadronic light-by-light contribution to the muon anomalous magnetic moment and some more recent contributions. I discuss the various contributions starting with pseudoscalar meson exchange, the quark- and pion-loop,
Bijnens Johan
doaj   +1 more source

BHLS 2 upgrade: τ spectra, muon HVP and the [ π 0 , η , η ' ] system. [PDF]

Eur Phys J C Part Fields, 2022
Benayoun M, DelBuono L, Jegerlehner F.
europepmc   +1 more source

The anomalous chiral Lagrangian at order p8

Journal of High Energy Physics
A bstract We derive the order p 8 Lagrangian of odd intrinsic parity for mesonic chiral perturbation theory, and provide the resulting operator basis in the supplementary material. Neglecting the
Bijnens, Johan, Hermansson-Truedsson, Nils, Ruiz-Vidal, Joan   +2 more
openaire   +3 more sources

Chiral lagrangians and WW scattering

Nuclear Physics B, 1991
Recently, it has been proposed that the scattering of strongly interacting longitudinal gauge bosons can be studied using chiral perturbation theory. By fitting the energy dependence of the scattering amplitudes in the energy region 0.5 TeV < √s < 1.2 TeV one is sensitive to the nature of electroweak symmetry breaking.
S. Dawson, G. Valencia
openaire   +1 more source

Quantum Chern-Simons Theories on Cylinders: BV-BFV Partition Functions. [PDF]

Commun Math Phys, 2023
Cattaneo AS, Mnev P, Wernli K.
europepmc   +1 more source

Edge Modes and Dressing Fields for the Newton-Cartan Quantum Hall Effect. [PDF]

Found Phys, 2023
Wolf WJ, Read J, Teh NJ.
europepmc   +1 more source