Speaker
Description
Potential NRQCD (pNRQCD) effective field theory provides expressions for decay
rates and production cross sections of strongly coupled heavy quarkonia in
terms of quarkonium wavefunctions and universal gluon field correlators. This
brings in a reduction of the number of nonperturbative unknowns, and improves
the predictive power of the nonrelativistic effective field theory approach to
heavy quarkonium phenomenology. This also paves a way for computing
nonperturbative matrix elements for quarkonium decay and production from first
principles. In this talk, we present first pNRQCD predictions for exclusive
electromagnetic production of heavy quarkonium. We also present a recent
development in pNRQCD that may allow us to compute inclusive hadroproduction
rates of heavy quarkonium from first principles, which has not been possible so
far.
