Clues for the existence of two $K_1(1270)$ resonances
| dc.creator | Geng, L. S. | |
| dc.creator | Oset, E. | |
| dc.creator | Roca, L. | |
| dc.creator | Oller, J. A. | |
| dc.date | 2006-10-17 | |
| dc.date | 2007-01-28 | |
| dc.date.accessioned | 2026-07-07T11:05:55Z | |
| dc.date.available | 2026-07-07T11:05:55Z | |
| dc.description | The axial vector meson $K_1(1270)$ was studied within the chiral unitary approach, where it was shown that it has a two-pole structure. We reanalyze the high-statistics WA3 experiment $K^- p\to K^-π^+π^- p$ at 63 GeV, which established the existence of both $K_1(1270)$ and $K_1(1400)$, and we show that it clearly favors our two-pole interpretation. We also reanalyze the traditional K-matrix interpretation of the WA3 data and find that the good fit of the data obtained there comes from large cancellations of terms of unclear physical interpretation. | |
| dc.description | published version in PRD; typos corrected; title changed to "Clues for the existence of two $K_1(1270)$ resonances" | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0610217 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0610217 | |
| dc.identifier | Phys.Rev.D75:014017,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.014017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189354 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Clues for the existence of two $K_1(1270)$ resonances | |
| dc.type | text |