Speaker
Shrey Gogia
(Indian Institute of Technology Kharagpur)
Description
We address the issue of cancellation of infrared (IR) divergences at the amplitude level in Light Front Quantum Chromodynamics (LFQCD) using the coherent state formalism. We consider the process $e^{+}e^{-}\rightarrow q\bar{q}g$ upto $\mathcal{O}(g^3)$ in light-cone-time-ordered Hamiltonian perturbation theory and show that IR divergences in S-matrix elements appear due to vanishing energy denominators. We construct the coherent state formalism for LFQCD and explicitly show that these divergences are cancelled when a coherent state basis is used for calculating the S-matrix elements.
| Field of contribution | Theory |
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Authors
Prof.
Anuradha Misra
(UM-DAE CEBS, University of Mumbai, India)
Dr
Deepesh Bhamre
(Laboratorio de Fisica Teorica e Computacional (LFTC), Universidade Cruzeiro do Sul (UCS), Rua Galvao Bueno, Sao Paulo, Brasil)
Shrey Gogia
(Indian Institute of Technology Kharagpur)
