Strong interaction shift and width of the 1s level in pionic hydrogen.
D
Sigg
A
Badertscher
M
Bogdan
PF
Goudsmit
HJ
Leisi
E
Matsinos
H
Schröder
ZG
Zhao
D
Chatellard
J
Egger
E
Jeannet
EC
Aschenauer
K
Gabathuler
LM
Simons
Rusi El Hassani AJ