Results 31 to 40 of about 62,213 (219)

Axial-vector transition form factors and e + e − → f 1 π + π −

Journal of High Energy Physics, 2023
We study the transition form factors (TFFs) of axial-vector mesons in the context of currently available experimental data, including new constraints from e + e − → f 1(1285)π + π − that imply stringent limits on the high-energy behavior and, for the ...
Martin Hoferichter, Bastian Kubis, Marvin Zanke   +2 more
doaj   +1 more source

QCD chiral Lagrangian on the lattice, strong coupling expansion and Ward identities with Wilson fermions [PDF]

, 1996
We discuss a general strategy to compute the coefficients of the QCD chiral Lagrangian using lattice QCD with Wilson fermions. This procedure requires the introduction of a lattice chiral Lagrangian as an intermediate step in the calculation.
A. Pich, A. R. Levi, C. R. Allton, C. Rebbi, G. Ecker, G. Ecker, G. Martinelli, H. Georgi, H. Kluberg-Stern, J. Beijnens, J. Gasser, K. Wilson, L. H. Karsten, L. Lellouch, M. Bochicchio, M. Crisafulli, N. Cabibbo, N. Kawamoto, S. Aoki, S. Aoki, S. Myint, S. Weinberg, S. Weinberg, U. G. Meissner, V. Lubicz   +24 more
core   +2 more sources

Radiative corrections to the forward-backward asymmetry in e + e − → π + π −

Journal of High Energy Physics, 2022
We present a calculation of the C-odd radiative corrections to e + e − → π + π − in a dispersive formalism, concentrating on the leading pion-pole contribution in the virtual box diagrams.
Gilberto Colangelo, Martin Hoferichter, Joachim Monnard, Jacobo Ruiz de Elvira   +3 more
doaj   +1 more source

Non-Abelian sine-Gordon solitons

Nuclear Physics B, 2015
We point out that non-Abelian sine-Gordon solitons stably exist in the U(N) chiral Lagrangian. They also exist in a U(N) gauge theory with two N by N complex scalar fields coupled to each other.
Muneto Nitta
doaj   +1 more source

Dimensional structural constants from chiral and conformal bosonization of QCD [PDF]

, 1997
We derive the dimensional non-perturbative part of the QCD effective action for scalar and pseudoscalar meson fields by means of chiral and conformal bosonization.
A. A. Andrianov, Andrianov A. A., Anisovich V. V., D. Ebert, Dhar A., Donoghue J. F., Ebert D., Fujikawa K., Hannah T., Karchev N., McKay D., Simic P., T. Feldmann, V. A. Andrianov, Zuk J.   +14 more
core   +3 more sources

A chiral effective lagrangian for nuclei [PDF]

Nuclear Physics A, 1997
43 pages, REVTeX 3.0 with epsf.sty, plus 12 ...
Furnstahl, R. J., Serot, Brian D., Tang, Hua-Bin   +2 more
openaire   +2 more sources

Study of the interactions of the axion with mesons and photons using a chiral effective Lagrangian model

European Physical Journal C: Particles and Fields, 2020
We investigate the most interesting decay processes involving axions, photons and the lightest pseudoscalar mesons, making use of a chiral effective Lagrangian model with $$L=3$$ L=3 light quark flavors, which also includes the flavor-singlet ...
Giacomo Landini, Enrico Meggiolaro
doaj   +1 more source

a → πππ decay at next-to-leading order in chiral perturbation theory

Journal of High Energy Physics, 2022
We discuss the construction of the two-flavour axion-pion effective Lagrangian at the next-to-leading order (NLO) in chiral perturbation theory and present, as a phenomenological application, the calculation of the decay rate of a GeV-scale axion-like ...
Luca Di Luzio, Gioacchino Piazza
doaj   +1 more source

Chiral field theory of $0^{-+}$ glueball [PDF]

, 2010
A chiral field theory of $0^{-+}$ glueball is presented. By adding a $0^{-+}$ glueball field to a successful Lagrangian of chiral field theory of pseudoscalar, vector, and axial-vector mesons, the Lagrangian of this theory is constructed.
Bing An Li, Bing An Li, C. Amsler, H. Yu
core   +1 more source

Calculation of Chiral Lagrangian Coefficients [PDF]

Chinese Physics Letters, 2003
7 pages, To appear in Chin.Phys.Lett, Year ...
openaire   +2 more sources