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Autor:
Avraham Gal, E. Friedman
Publikováno v:
Physics Letters B, Vol 792, Iss, Pp 340-344 (2019)
Physics Letters
Physics Letters
Earlier work suggested that the in-medium $\pi N$ threshold isovector amplitude $b_1(\rho)$ gets renormalized in pionic atoms by about 30% away from its $\rho=0$ free-space value, relating such renormalization to the leading low-density decrease of t