Two-current correlations in the pion in the Nambu and Jona-Lasinio model

6533b860fe1ef96bd12c2fdf

RESEARCH PRODUCT

Two-current correlations in the pion in the Nambu and Jona-Lasinio model

Aurore Courtoy Sergio Scopetta Santiago Noguera

subject

Quark Nuclear Theory Physics and Astronomy (miscellaneous)High Energy Physics::Lattice Nuclear Theory Dirac (software)FOS: Physical sciences lcsh:Astrophysics Position and momentum space Parton 01 natural sciences Nuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)Pion Factorization lcsh:QB460-466 0103 physical sciences lcsh:Nuclear and particle physics. Atomic energy. Radioactivity 010306 general physics Engineering (miscellaneous)Mathematical physics Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology High Energy Physics - Phenomenology Lattice (module)Regularization (physics)lcsh:QC770-798

description

We present an analysis of two-current correlations for the pion in the Nambu--Jona-Lasinio model, with Pauli--Villars regularization. We provide explicit expressions in momentum space for two-current correlations corresponding to the zeroth component of the vector Dirac bilinear in the quark vertices, which has been evaluated on the lattice. The numerical results show a remarkable qualitative agreement with recent lattice data. The factorization approximation into one-body currents is discussed.

year	journal	country	edition	language
2020-10-01	The European Physical Journal C

https://doi.org/10.1140/epjc/s10052-020-08470-1

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