Heavy Quarks, QCD, and Effective Field Theory

Thomas Mehen

关键词: Heavy Quarks;    Quarkonium;    Soft-Collinear Effective Theory;    Effective Field Theories;   

DOI  :  10.2172/1052829
RP-ID  :  DOE/ER/41376-1
PID  :  OSTI ID: 1052829

美国|英语

来源: SciTech Connect

【 摘 要 】

The research supported by this OJI award is in the area of heavy quark and quarkonium production, especially the application Soft-Collinear E ective Theory (SCET) to the hadronic production of quarkonia. SCET is an e ffective theory which allows one to derive factorization theorems and perform all order resummations for QCD processes. Factorization theorems allow one to separate the various scales entering a QCD process, and in particular, separate perturbative scales from nonperturbative scales. The perturbative physics can then be calculated using QCD perturbation theory. Universal functions with precise fi eld theoretic de nitions describe the nonperturbative physics. In addition, higher order perturbative QCD corrections that are enhanced by large logarithms can be resummed using the renormalization group equations of SCET. The applies SCET to the physics of heavy quarks, heavy quarkonium, and similar particles.