Document Type
Article
Publication Date
4-2020
DOI
10.1103/PhysRevD.101.071503
Publication Title
Physical Review D
Volume
101
Issue
7
Pages
071503(R) (6 pp.)
Abstract
We generalize the celebrated heavy quark expansion to nonlocal QCD operators. By taking nonlocal heavy-light current on the light-cone as an example, we confirm that the collinear singularities are common between QCD operator and the corresponding operator in heavy quark effective theory (HQET), at the leading power of 1/M expansion. Based on a perturbative calculation in operator form at one-loop level, a factorization formula linking QCD and HQET operators is investigated and the matching coefficient is determined. The matching between QCD and HQET light-cone distribution amplitudes (LCDAs) as well as other momentum distributions of hadron can be derived as a consequence.
Original Publication Citation
Zhao, S. (2020). Heavy quark expansion for heavy-light light-cone operators. Physical Review D, 101(7), 071503. doi:10.1103/PhysRevD.101.071503
Repository Citation
Zhao, Shuai, "Heavy Quark Expansion for Heavy-Light Light-Cone Operators" (2020). Physics Faculty Publications. 419.
https://digitalcommons.odu.edu/physics_fac_pubs/419
Comments
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society