Four- and Five-Body Scattering Calculations
| dc.creator | Hiyama, Emiko | |
| dc.creator | Suganuma, Hideo | |
| dc.creator | Kamimura, Masayasu | |
| dc.date | 2007-07-27 | |
| dc.date.accessioned | 2026-07-07T11:41:37Z | |
| dc.date.available | 2026-07-07T11:41:37Z | |
| dc.description | We study the five-quark system $uudd{\bar s}$ in the standard non-relativistic quark model by solving the scattering problem. Using the Gaussian Expansion Method (GEM), we perform the almost precise multi-quark calculations by treating a very large five-body modelspace including the NK scattering channel explicitly. Although a lot of pseudostates (discretized continuum states) with $J^π={1/2}^\pm$ and $J^π={3/2}^\pm$ are obtained within the bound-state approximation, all the states in $1.4-1.85$ GeV in mass around ${\rm {\rm Θ}}^+(1540)$ melt into non-resonant continuum states through the coupling with the NK scattering state in the realistic case, i.e., there is no five-quark resonance below 1.85GeV. Instead, we predict a five-quark resonance state of $J^π={1/2}^-$ with the mass of about 1.9GeV and the width of $Γ\simeq$ 2.68MeV. Similar calculation is done for the four-quark system $c{\bar c}q{\bar q}$ ($q=u,d$) in connection with X$^0$(3872). | |
| dc.identifier | https://arxiv.org/abs/0707.4044 | |
| dc.identifier | http://arxiv.org/abs/0707.4044 | |
| dc.identifier | Prog.Theor.Phys.Suppl.168:101-106,2007 | |
| dc.identifier | doi:10.1143/PTPS.168.101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200601 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Four- and Five-Body Scattering Calculations | |
| dc.type | text |