https://doi.org/10.1140/epjp/s13360-024-05260-6
Regular Article
A theoretical investigation on the spectroscopy of the exotic tetraquark and pentaquark states
1
Department of Physics, Basanti Devi College, Kolkata, India
2
Department of Physics, Adamas University, Kolkata, India
3
Department of Physics, Jogamaya Devi College, Kolkata, India
c
ballari_chakrabarti@yahoo.co.in
Received:
5
October
2023
Accepted:
10
May
2024
Published online:
4
June
2024
We have investigated the masses of the new exotic tetraquarks 
, 
and pentaquark 
in the framework of the diquark–antidiquark and in the di-hadronic states approach. Treating them as composite system of diquark–antidiquark, their higher state masses have also been predicted in the context of the colour flux tube model. The effective masses of the diquarks constituting the tetraquark and pentaquark have been estimated in the composite fermion (CF) model. The scalar and vector diquarks play an important role in this investigation. Their Regge trajectories have been also studied. Form factors 
of these exotic particles have been investigated and their variations with low and medium 
have also been displayed. The computed ground state masses have been compared with the recently discovered experimental data.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
