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arXiv · 1908.07660

Meson spectrum in $QCD_2$ revisited

Jorge Alfaro·Alex Soto
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Abstract

Recently it has been shown that in two dimensions is possible to add new Lorentz invariant terms built with fractions containing the null vector $n= (1, 1)$. In this work, we have computed the meson spectrum following the 't Hooft model in $QCD_2$ incorporating these new kinds of terms. We found these new terms does not affect the meson spectrum. We have computed the 't Hooft model with a new regulator. We have introduced a gluon mass and we have recovered the 't Hooft result when this parameter is set to zero.

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Jorge Alfaro, Alex Soto. 2019-08-21. Meson spectrum in $QCD_2$ revisited. https://arxiv.org/abs/1908.07660

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