Factorization Theorems for Exclusive Heavy-Quarkonium Production
نویسندگان
چکیده
منابع مشابه
QCD Factorization for heavy quarkonium production at collider energies
In this talk, I briefly review several models of the heavy quarkonium production at collider energies, and discuss the status of QCD factorization for these production models.
متن کاملFragmentation, NRQCD and Factorization in Heavy Quarkonium Production
We discuss factorization in heavy quarkonium production in high energy collisions using NRQCD. Infrared divergences at NNLO are not matched by conventional NRQCD matrix elements. However, we show that gauge invariance and factorization require that conventional NRQCD production matrix elements be modified to include Wilson lines or non-abelian gauge links. With this modification NRQCD factoriza...
متن کاملFragmentation, NRQCD and NNLO Factorization Analysis in Heavy Quarkonium Production
We discuss heavy quarkonium production through parton fragmentation, including a review of arguments for the factorization of high-pT particles into fragmentation functions for hadronic initial states. We investigate the further factorization of fragmentation functions in the NRQCD formalism, and argue that this requires a modification of NRQCD octet production matrix elements to include nonabe...
متن کاملFragmentation, Factorization and Infrared Poles in Heavy Quarkonium Production
We explore the role of soft gluon exchange in heavy quarkonium production at large transverse momentum. We find uncanceled infrared poles at NNLO that are not matched by conventional NRQCD matrix elements. We show, however, that gauge invariance and factorization require that conventional NRQCD production operators be modified to include nonabelian phases or Wilson lines. With appropriately mod...
متن کاملQCD Factorization for heavy quarkonium productiolz at collider energies
In this talk, I briefly review several models of the.heavy quarkonium .production at collider energies, and discuss the status of QCD factorization for these production models.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2008
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.101.102002