TY - RPRT TI - Quark mass difference effects in hadronic Fermi matrix elements from first principles AU - Seng, Chien-Yeah AU - Cirigliano, Vincenzo AU - Feng, Xu AU - Gorchtein, Mikhail AU - Jin, Luchang AU - Miller, Gerald A. PY - 2023 DO - 10.1016/j.physletb.2023.138259 UR - https://www.osti.gov/biblio/2202871 ID - 2202871 ER -