Please visit Jefferson Lab Event Policies and Guidance before planning your next event: https://www.jlab.org/conference_planning.

Sep 24 – 29, 2023
US/Eastern timezone

Properties of the newly discovered exotic particles in Diquark model.

Sep 26, 2023, 11:00 AM
30m
Junior D3 (Durham Convention Center)

Junior D3

Durham Convention Center

Talk Low Energy Spin Physics with Lepton, Photon and Hadron Probes Low Energy Spin Physics with Lepton, Photon and Hadron Probes

Speaker

Prof. Aparajita Bhattacharya (Adamas University)

Description

{\bf Abstract}
\vskip .2in

Recently CERN has discovered three new exotic particles in LHCb. The particle are $T_{cso}$ $(2900)^{++}$, a doubly charged tetraquark with quark configuration (csu$\overline{d}$), $T_{cso}$ $(2900)^{0}$, a neutral tetraquark with quark configuration (cds$\overline{u}$) and a neutral pentaquark $P_{\psi s}$ $(4338)^{0}$ with quark configuration (c$\overline{c}$ uds) which is first observed pentaquark with a strange quark in its configuration. The discovery of these subatomic particles are exciting and the nature of interaction of the constituent quarks are need to be understood for these multiquark states. Diquark is one of the most important candidate for studying the structure and dynamics of exotic states. In the current work we have studied the properties of these particles in the frame work of diquark correlation. Diquark is a hypothetical coloured antisymmetric correlation of two quarks with spin 0 (scalar) or a vector with spin 1. We have suggested two models for diquarks. The composite fermion model and effective mass approximation model for diquark have been used to estimate the masses of $T_{cso}$ $(2900)^{++}$, $T_{cso}$ $(2900)^{0}$ and $P_{\psi s}$ $(4338)^{0}$. Results are found to be in good agreement with the experimental masses observed by CERN. We have also studied the higher states masses of the particles in the framework of the flux tube model which may be discovered in future. The regge trajectories are plotted. The form factor of these three exotics are also studied and plotted with different values of momentum transfer $Q^{2}$.

Primary authors

Prof. Aparajita Bhattacharya (Adamas University) Dr B. Chakrabarti Dr P. Dhara Dr S. Pal (Basanti Devi College,Kolkata)

Presentation materials

There are no materials yet.