6533b861fe1ef96bd12c595d
RESEARCH PRODUCT
Diabatic description of bottomoniumlike mesons
R. BruschiniP. Gonzálezsubject
Quantum chromodynamicsPhysicsParticle physicsMeson010308 nuclear & particles physicsHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyDiabaticFOS: Physical sciencesState (functional analysis)01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesContent (measure theory)Spectral analysisHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsBar (unit)description
We apply the diabatic approach, specially suited for a QCD based study of conventional (quark-antiquark) and unconventional (quark-antiquark + meson-meson) meson states, to the description of hidden-bottom mesons. A spectral analysis of the $I=0$, $J^{++}$ and $1^{--}$ resonances with masses up to about $10.8$ GeV is carried out. Masses and widths of all the experimentally known resonances, including conventional and unconventional states, can be well reproduced. In particular, we predict a significant $B\bar{B}^{\ast}$ component in $\Upsilon(10580)$. We also predict the existence of a not yet discovered unconventional $1^{++}$ narrow state, with a significant $B_{s}\bar{B}_{s}^{\ast}$ content making it to decay into $\Upsilon(1S)\phi$, whose experimental discovery would provide definite support to our theoretical analysis.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-06-17 |