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.

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

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

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