Key points are not available for this paper at this time.
Exotic hadrons are a new class of hadronic states whose properties do not allow them to be classified as conventional quark-antiquark mesons or three quark baryons. Finding new and understanding established exotic states is the most important topic in today’s hadron spectroscopy and a promising avenue to advance our knowledge on Quantum Chromodynamics in the nonperturbative regime. While several high-quality reviews on the topic exist, they are all at an advanced level. This paper aims to address new-comers to the field with a simple introduction to exotic hadrons with an emphasis on the experimental studies.
Huesken et al. (Mon,) studied this question.