Constraint on the light quark mass $m_q$ from QCD Sum Rules in the $I=0$ scalar channel

Jia-Min Yuan, Zhu-Feng Zhang, T. G. Steele +2

In this paper, we reanalyze the $I=0$ scalar channel with the improved Monte-Carlo based QCD sum rules, which combines the rigorous Hölder-inequality-determined sum rule window and…