Properties of hadrons and hadron interactions

Abstract

The present project can be classified in the area of hadron physics, in general. More specifically, the project is related to the study of the properties of exotic hadrons and the processes related to these hadrons. The major challenge in the area of hadron physics is the non-perturbative nature of QCD, in the energy region where hadrons are formed, as a result of which different methods need to be used to explore hadron physics. Following the traditional quark model, there are two types of hadrons, those described by a wave function written in terms of a quark and antiquark in the valence state (mesons) and those described in terms of three valence quarks (baryons). There are several other quark structures or configurations that are not prohibited by the theory of strong interactions, and the possible existence of such hadrons has always been contemplated. But only very recent experiments, carried out by collaborations such as LHC (Switzerland), BELLE (Japan) and BES (China) have provided definitive evidence for the existence of such exotic hadrons. It has been clearly shown that these newly found states cannot be described as the mesons/baryons within the traditional quark model. But the question which arises is: what really is their nature. There is an ongoing debate on this topic in the field of hadron physics, which is being vigorously discussed continuously. The project presented here is a part of this effort made within the community of hadron physics and the idea is to clarify the nature of some hadrons through calculations made as accurately and carefully as possible. (AU)