Garchinger Maier-Leibnitz-Kolloquium: Production and polarization of S-wave quarkonium in potential non-relativistic QCD

by Dr Xiangpeng Wang (Physik Department, TU München)

Thursday May 5, 2022, 4:15 PM → 5:15 PM Europe/Berlin

Lecture Hall, ground floor west (LMU building, Am Coulombwall 1, Campus Garching)

Based on the potential nonrelativistic QCD formalism, we compute the nonrelativistic QCD long-distance matrix elements (LDMEs) for inclusive production of S-wave heavy quarkonia. This greatly reduces the number of nonperturbative unknowns and brings in a substantial enhancement in the predictive power of the NRQCD factorization formalism. We obtain improved determinations of the LDMEs and find cross sections and polarizations of  Psi, Psi(2S), and excited Y states that agree well with LHC data. Our results may have important implications on pinning down the heavy quarkonium production mechanism.

Hybrid online access via ZOOM:
https://lmu-munich.zoom.us/j/98457332925?pwd=TWc3V1JkSHpyOTBPQVlMelhuNnZ1dz09
Meeting ID: 984 5733 2925
Passcode: 979953

kolloquium-05-05-22.pdf