Speaker
Mr
Sabyasachi Roy
(Karimganj College, Karimganj, India.)
Description
Nambu-Goto string predicts the long distance quark-antiquark potential to be :
V (r) = σ r + µ +γ /r + O(1/r2).
The coefficient γ = -π(d-2)/24 is the universal Lűscher term which depends on the space-time dimension ‘d’. Recent lattice calculation of the force versus distance supports this potential for r>0 and d=3 & 4.
We use quantum mechanical Dalgerno’s method to calculate the effect of Luscher term in quark-antiquark wave function and apply it to the mass and decay constants of heavy-light and heavy-heavy mesons.
Primary author
Mr
Sabyasachi Roy
(Karimganj College, Karimganj, India.)
Co-author
Prof.
Dilip Kumar Choudhury
(Gauhati University, India)
