Spin Correlations and Velocity-Scaling in NRQCD Matrix Elements
Geoffrey T. Bodwin (Argonne), Jungil Lee (Korea U), D. K. Sinclair, (Argonne)
TL;DR
This paper calculates spin-dependent matrix elements for S-wave quarkonia decays using lattice NRQCD, showing they roughly follow the expected velocity-scaling rules of NRQCD.
Contribution
It provides the first lattice NRQCD calculations of spin-dependent matrix elements, testing their consistency with velocity-scaling predictions.
Findings
Matrix elements are in approximate agreement with velocity-scaling rules.
Supports the validity of NRQCD in describing quarkonium decays.
Offers quantitative data for future theoretical and experimental comparisons.
Abstract
We compute spin-dependent matrix elements for decays of S-wave quarkonia in lattice NRQCD. They appear to be in approximate agreement with the velocity-scaling rules of NRQCD.
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