# Status of exotic-quantum-number mesons

@article{Meyer2010StatusOE,
title={Status of exotic-quantum-number mesons},
author={Curtis A. Meyer and Yves van Haarlem},
journal={Physical Review C},
year={2010},
volume={82},
pages={025208}
}
• Published 30 April 2010
• Physics
• Physical Review C
The search for mesons with non-quark-antiquark (exotic) quantum numbers has gone on for nearly 30 years. Currently there is experimental evidence of three isospin one states, the ${\ensuremath{\pi}}_{1}(1400)$, the ${\ensuremath{\pi}}_{1}(1600)$, and the ${\ensuremath{\pi}}_{1}(2015)$. For all of these states, there are questions about their identification and even if some of them exist. In this article, we will review both the theoretical work and the experimental evidence associated with…
51 Citations
New results on the search for spin-exotic mesons with COMPASS
• Physics
• 2011
The COMPASS fixed-target experiment at the CERN-SPS studies the structure and spectrum of hadrons. One important goal using hadron beams is the search for new states, in particular spin-exotic mesons
The mass spectra and decay properties of dimesonic states, using the Hellmann potential
• Physics
• 2015
Mass spectra of the dimesonic (meson–antimeson) molecular states are computed using the Hellmann potential in a variational approach, which consists of a relativistic correction to the kinetic energy
Meson Spectroscopy at COMPASS
The goal of the COMPASS experiment at CERN is to study the structure and dynamics of hadrons. The two-stage spectrometer used by the experiment has large acceptance and covers a wide kinematic range
Mass spectra of dimesonic states in light flavour sector
• Physics
• 2016
Masses of the dimesonic (meson–antimeson) molecular states are calculated using Yukawa like and meson exchange potential in semi-relativistic approach. The digamma decay width of the dimesonic
Quasi-exotic open-flavor mesons
• Physics
• 2016
Abstract.Meson states with exotic quantum numbers arise naturally in a covariant bound-state framework in QCD. We investigate the consequences of shifting quark masses such that the states are no
Decays of an exotic 1−+ hybrid meson resonance in QCD
• Physics
• 2020
We present the first determination of the hadronic decays of the lightest exotic $J^{PC}=1^{-+}$ resonance in lattice QCD. Working with SU(3) flavor symmetry, where the up, down and strange quark
Hybrid Mesons
• Physics
• 2015
Glueballs as the Ithaca of meson spectroscopy
This compact review about gluonium focuses on a slate of theoretical efforts; among the many standing works, I have selected several that are meant to assist in the identification, among ordinary
A possible global group structure for exotic states
• Physics
• 2014
Based on the fact that the long expected pentaquark which possesses the exotic quantum numbers of $$B=1$$B=1 and $$S=1$$S=1 was not experimentally found, although exotic states of $$XYZ$$XYZ have
Meson Spectroscopy at JLab@12 GeV
Meson, being the simplest hadronic bound system, is the ideal "laboratory" to study the interaction between quarks, to understand the role of the gluons inside hadrons and to investigate the origin

## References

SHOWING 1-10 OF 201 REFERENCES
Charge exchange rho0 pi+ photoproduction and implications for searches of exotic meson
• Physics, Materials Science
• 2000
We analyze the processes $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\gamma}}+\stackrel{\ensuremath{\rightarrow}}{p}{\ensuremath{\rho}}^{0}{\ensuremath{\pi}}^{+}n$ at low momentum transfer
1-+ exotic meson at light quark masses
• Physics
• 2005
The mass of the 1{sup -+} exotic meson, created with hybrid interpolating fields, is explored in numerical simulations of quenched QCD on large (20{sup 3}x40) lattices to obtain good control of
Lattice calculation of 1-+ hybrid mesons with improved Kogut-Susskind fermions
• Physics
• 2003
We report on a lattice determination of the mass of the exotic ${1}^{\ensuremath{-}+}$ hybrid meson using an improved Kogut-Susskind action. Results from both quenched and dynamical quark simulations
Exotic and excited-state radiative transitions in charmonium from lattice QCD
• Physics
• 2009
We compute, for the first time using lattice QCD methods, radiative transition rates involving excited charmonium states, states of high spin and exotics. Utilizing a large basis of interpolating
Higher Quarkonia
• Physics
• 1996
We discriminate gluonic hadrons from conventional $q\bar q$ states by surveying radial and orbital excitations of all I=0 and I=1 $n\bar n$ systems anticipated up to 2.1 GeV. We give detailed
Exotic mesons in quenched lattice QCD
• Physics
• 1997
Since gluons in QCD are interacting fundamental constituents just as quarks are, we expect that in addition to mesons made from a quark and an antiquark, there should also be glueballs and hybrids
Decay width of light quark hybrid meson from the lattice
• Physics
• 2006
Lattice QCD with N{sub f}=2 flavours of sea quark is used to explore the spectrum and decay of a J{sup PC}=1{sup -+} spin-exotic hybrid meson. We test lattice determination of S-wave decay amplitudes
Evidence for exotic JPC=1-+ meson production in the reaction π-p→ηπ-p at 18 GeV/c
• Physics
• 1999
Details of the analysis of the eta pi- system studied in the reaction pi^{-} p --> eta pi^{-} p at 18 GeV/c are given. Separate analyses for the 2 gamma and pi+ pi- pi0 decay modes of the eta are
Lattice study of light scalar tetraquarks with I=0,2,1/2,3/2: are sigma and kappa tetraquarks?
• Physics
• 2010
We investigate whether the lightest scalar mesons {sigma} and {kappa} have a large tetraquark component qqqq, as is strongly supported by many phenomenological studies. A search for possible light