RT Journal Article
T1 Light 1(-+) exotics: molecular resonances
A1 Llanes Estrada, Felipe José
A1 General, Ignacio J.
A1 Wang, Ping
A1 Cotanch, Stephen R.
AB Highlights in the search for nonconventional (non-q.q) meson states are the π1(1400) and π1(1600) exotic candidates. Should they exist, mounting theoretical arguments suggest that they are tetraquark molecular resonances excitable by meson rescattering.We report a new tetraquark calculation within a model field theory approximation to Quantum Chromodynamics in the Coulomb gauge supporting this conjecture. We also strengthen this claim by  consistentlycontrasting results with exotic state predictions for hybrid (q . qg) mesons within the same theoretical framework. Our findings confirm that molecular like configurations involving two color singlets (a resonance, not a bound state) are clearly favored over hybrid or color-exotic tetraquark meson (q . qq.q atoms) formation. Finally, to assist needed further experimental searches we document a useful off-plane correlator for establishing the structure of these exotic systems along with similar, but anticipated much narrower, states that should exist in the charmonium and bottomonium spectra.
PB Elsevier Science BV
SN 0370-2693
YR 2007
FD 2007-09-30
LK https://hdl.handle.net/20.500.14352/50793
UL https://hdl.handle.net/20.500.14352/50793
LA eng
NO © 2007 Elsevier B.V.This work was supported in part by grants FPA 2004-02602, 2005-02327, PR27/05-13955-BSCH (Spain) and US DOE DEFG02 97ER41048 and DE-FG02-03ER41260                                                   .
NO US DOE
NO BSCH (Spain)
DS Docta Complutense
RD 8 abr 2025