The kappa in E791 data for D->K-pi-pi
| dc.creator | Bugg, D. V. | |
| dc.date | 2005-10-06 | |
| dc.date | 2005-11-26 | |
| dc.date.accessioned | 2026-07-07T10:28:35Z | |
| dc.date.available | 2026-07-07T10:28:35Z | |
| dc.description | A combined fit is made to E791 data on D->K-pi-pi, LASS data on K-pi elastic scattering, and BES II data on J/Psi->K*(890)-K-pi.In all cases, the K-pi S-wave is fitted well with a kappa resonance and Ko(1430); the kappa requires an s-dependent width with an Adler zero near threshold. The pole position of the kappa is at M - iGamma/2 = (750 +30 -55) - i(342 +- 60) MeV. The E791 collaboration fitted their data using a form factor for the production process D->kappa-pi. It is shown that this form factor is not needed. The data require point-like production with an RMS radius <0.38 fm with 95 percent confidence. | |
| dc.description | 11 pages, 4 figures. Typos corrected. Material added to explain how a pole is possible without the phase shift on the real s-axis going through 90 degrees | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0510019 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0510019 | |
| dc.identifier | Phys.Lett.B632:471-474,2006 | |
| dc.identifier | doi:10.1016/j.physletb.2005.11.019 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177496 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | The kappa in E791 data for D->K-pi-pi | |
| dc.type | text |