A note on the determination of light quark masses

Understand

We provide a model-independent determination of the quantity B_0(m_d-m_u).

• Our approach rests only on chiral symmetry and data from the decay of the eta into three neutral pions.
• Since the low-energy prediction at next-to-leading order fails to reproduce the experimental results, we keep the strong interaction correction as an unknown parameter.
• As a first step, we relate this parameter to the quark mass difference using data from the Dalitz plot.