Isospin Splittings of Baryons
Abstract
We discuss the isospin-breaking mass differences among baryons, with particular attention in the charm sector to the
Σ
+
c
−
Σ
0
c
,
Σ
++
c
−
Σ
0
c
, and
Ξ
+
c
−
Ξ
0
c
splittings. Simple potential models cannot accommodate the trend of the available data on charm baryons. More precise measurements would offer the possibility of testing how well potential models describe the non-perturbative limit of QCD.