Dynamical Up-quark Mass Generation in QCD-like theories
Csaba Csáki🇺🇸 · Tuhin S. Roy🇮🇳 · Maximilian Ruhdorfer🇺🇸 · Taewook Youn🇺🇸
We calculate the dynamically generated up quark mass in some QCD-like theories with light flavors, obtained from supersymmetric QCD perturbed via anomaly mediated supersymmetry breaking. We match the low-energy effective theory to the traditional chiral Lagrangian of QCD and determine the coefficients to next-to-leading order in chiral perturbation theory, while also varying the number of colors . We find that the dynamically generated up quark mass vanishes in the large limit, and is small for , however for there is a sizeable contribution. While our results are reliable only for small supersymmetry breaking, we observe that extrapolating the result to large supersymmetry breaking would lead to a dynamical up quark mass that is large enough to account for its entire physical mass.