Production and polarization of prompt J/ψ to O(α_s^3) in the improved color evaporation model
ORAL
Abstract
One of the best ways to understand hadronization in QCD is to study the production of quarkonium. The color evaporation model (CEM) and Nonrelativistic QCD (NRQCD) can describe production yields rather well but spin-related measurements like the polarization are stronger tests. In this talk, we will present recent results of quarkonium polarization in the improved color evaporation model (ICEM), and how feed down from higher states affect the polarization in this approach.
*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 and supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics (Nuclear Theory) under Contract No. DE-SC-0004014, and the LLNL-LDRD Program under Project No. 21-LW-034.
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Presenters
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Vincent Cheung
- Lawrence Livermore Natl Lab