Abstract
An overview of recent developments in charmed baryon spectroscopy is given. The classification of charmed baryons is presented, a quark model for ground states is briefly described, and the energy levels of excited states are analyzed.
Highlights
The spectroscopy of charmed baryons is beautiful and intricate
The spectrum of known singly charmed states can be thought of in three broad regimes: the ground states, which are a vindication of the constituent quark model; the low-lying excited states, which are described well by Heavy Quark Effective Theory (HQET); and higher excited states, where the situation is murkier
In the constituent quark model [1], baryons composed of u, d, s, c quarks can be classified into S U(4) multiplets according to the symmetry of their flavor, spin, and spatial wavefunctions
Summary
The spectroscopy of charmed baryons is beautiful and intricate. With three quarks there are numerous degrees of freedom, giving rise to many more states than in the charmed meson sector. The large difference in mass between the charm quark and the light quarks provides a natural way to classify and understand these states: Heavy Quark Effective Theory (HQET). The spectrum of known singly charmed states can be thought of in three broad regimes: the ground states, which are a vindication of the constituent quark model; the low-lying excited states, which are described well by HQET; and higher excited states, where the situation is murkier
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