4.7 Article

Constraining 1+J → 2 coupled-channel amplitudes in a finite volume

Journal

PHYSICAL REVIEW D
Volume 104, Issue 5, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.054509

Keywords

-

Funding

  1. U.S. Department of Energy [DE-AC05-06OR23177, DE-SC0018416, DE-SC0019229]
  2. U.S. Department of Energy (DOE) [DE-SC0018416, DE-SC0019229] Funding Source: U.S. Department of Energy (DOE)

Ask authors/readers for more resources

The study shows that multi-hadron channel electroweak transition reactions can be effectively constrained through lattice QCD calculations using coupled-channel transition formalism, providing motivation for explicit computations in the future.
Whether one is interested in accessing the excited spectrum of hadrons or testing the standard model of particle physics, electroweak transition processes involving multihadron channels in the final state play an important role in a variety of experiments. Presently the primary theoretical tool with which one can study such reactions is lattice QCD, which is defined in a finite spacetime volume. In this work, we investigate the feasibility of implementing existing finite-volume formalism in realistic lattice QCD calculation of reactions in which a stable hadron can transition to one of several two-hadron channels under the action of an external current. We provide a conceptual description of the coupled-channel transition formalism, a practical road map for carrying out a calculation, and an illustration of the approach using synthetic data for two nontrivial resonant toy models. The results provide a proof of principle that such reactions can indeed be constrained using modern-day lattice QCD calculations, motivating explicit computation in the near future.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available