Leading SU(3) breaking in lightcone distribution amplitudes
Chul Kim, Adam K. Leibovich
TL;DR
This paper uses soft-collinear effective theory to analyze SU(3) breaking effects in lightcone distribution amplitudes of light pseudoscalar mesons, establishing new relations among them at leading order.
Contribution
It introduces a novel SCET-based framework to systematically incorporate SU(3) breaking effects in lightcone distribution amplitudes of light mesons.
Findings
Derived a new relation among LCDAs for pi, K, and eta mesons.
Demonstrated the perturbative treatment of SU(3) breaking effects.
Reproduced known relations using the SCET formalism.
Abstract
The lightcone formalism including SU(3) breaking effects for the light pseudoscalar mesons is studied using soft-collinear effective theory (SCET), where the conformal symmetries needed for the expansion can be clearly implemented. The lightcone distribution amplitudes (LCDAs) are well-defined at each order in the SCET power counting, lambda. Relations between the LCDAs are reproduced using the SCET formalism. Treating the SU(3) breaking perturbatively, the leading breaking effects can be described in a simple manner. As a result, a new relationship among the LCDAs for the light mesons pi, K, and eta is developed, valid to leading order in the SU(3) breaking.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.