2015/10/16 by Jaume Tarrús Castellà, Castellà, Jaume Tarrús
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.1510.04949
Proceedings for the conference Quark Confinement and the Hadron spectrum XI
arxiv created 2015/10/16 · openalex publication_date 2015/10/16 · arxiv updated 2015/10/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on the calculation of the Quarkonium Hybrid masses for the cgc, bgc and bgb systems~\citehbrpaper. A QCD analog of the Born-Oppenheimer approximation including the Λ--doubling terms has been used. The gluonic static energies are obtained combining the short range description from potential non--relativistic QCD (pNRQCD) and lattice QCD calculations. The effect Λ--doubling terms is to mix the contributions of the static energies to the hybrid states leading to the break of the degeneracy between spin symmetry multiplets with opposite parity. The spin symmetry multiplets with mixed contributions from different static energies have a lower mass with respect to the parity opposite that remains without mixed contributions. We compare with direct lattice calculations and discuss several experimental candidates.