A lattice QCD study of generalized gluelumps

TL;DR

This paper uses lattice QCD to study the spectrum of hypothetical hadrons formed by new colored particles in various SU(3) representations, providing numerical mass splittings and reassessing earlier quenched results.

Contribution

It introduces a comprehensive lattice QCD framework for analyzing generalized gluelumps with all quantum numbers and different color representations, expanding beyond previous quenched studies.

Findings

Numerical results for mass splittings in various color representations.

Reassessment of earlier quenched lattice results.

Construction of operators for all angular momentum, parity, and charge conjugation states.

Abstract

Proposals for physics beyond the standard model often include new colored particles at or beyond the scale of electroweak symmetry breaking. Any new particle with a sufficient lifetime will bind with standard model gluons and quarks to form a spectrum of new hadrons. Here we focus on colored particles in the octet, decuplet, 27-plet, 28-plet and 35-plet representations of SU(3) color because these can form hadrons without valence quarks. In every case, lattice creation operators are constructed for all angular momentum, parity and charge conjugation quantum numbers. Computations with fully-dynamical lattice QCD configurations produce numerical results for mass splittings within this new hadron spectrum. A previous quenched lattice study explored the octet case for certain quantum number choices, and our findings provide a reassessment of those early results.