Field distributions in heavy mesons and baryons

Abstract

Field distributions generated by static QQ and QQQ sources are calculated analytically in the framework of the Field Correlator Method (FCM) using Gaussian (bilocal) correlator. In both cases the string consists mostly of longitudinal color electric field, while transverse electric field contributes locally less then 3%, in agreement with earlier lattice studies. In the QQQ case the profile of the Y shape was calculated for the first time and found to have a complicated structure with a deep well at the string junction position. Possible consequences of this form for the baryon structure are discussed.

Static potential in a baryon within the method of vacuum correlation functions

“…It would be interesting to verify it independently on the lattice and extract an accurate value of the correlation length of gluonic fields. The errors in preceding works [17,18] were corrected for baryon potential and stated for the field distributions in baryon with the connected probe.…”

QCD flux tubes across the deconfinement phase transition

“…The field distributions generated by a static quark-antiquark pair can be probed by calculating on the lattice the vacuum expectation value of the following connected correlation function [5,23]:…”

Flux Tubes in QCD with (2+1) HISQ Fermions

“…Such tubelike structures naturally lead to a linear potential between static color charges and, consequently, to a direct numerical evidence of color confinement. To explore on the lattice the field configurations produced by a static quark-antiquark pair, the following connected correlation function [1,10] was used:…”