Speaker
Yiannis Makris
Description
In this talk I will discuss the TMD factorization and shape functions for quarkonium production in direct photo and lepto-production. The leading power contribution from color octets yields a more familiar form for the factorized cross section involving the quarkonium TMD-shape functions. The singlet contribution, which can be enhanced due to relative velocity power-counting, involves subleading operators and results in an intriguing “factorized” expression.
Author
Yiannis Makris
