Threshold effects in excited charmed baryon decays
| dc.creator | Blechman, Andrew E. | |
| dc.creator | Falk, Adam F. | |
| dc.creator | Pirjol, Dan | |
| dc.creator | Yelton, John M. | |
| dc.date | 2003-02-05 | |
| dc.date.accessioned | 2026-07-07T10:33:15Z | |
| dc.date.available | 2026-07-07T10:33:15Z | |
| dc.description | Motivated by recent results on charmed baryons from CLEO and FOCUS, we reexamine the couplings of the orbitally excited charmed baryons. Due to its proximity to the [Sigma_c pi] threshold, the strong decays of the Lambda_c(2593) are sensitive to finite width effects. This distorts the shape of the invariant mass spectrum in Lambda_{c1}-> Lambda_c pi^+pi^- from a simple Breit-Wigner resonance, which has implications for the experimental extraction of the Lambda_c(2593) mass and couplings. We perform a fit to unpublished CLEO data which gives M(Lambda_c(2593)) - M(Lambda_c) = 305.6 +- 0.3 MeV and h2^2 = 0.24^{+0.23}_{-0.11}, with h2 the Lambda_{c1}-> Sigma_c pi strong coupling in the chiral Lagrangian. We also comment on the new orbitally excited states recently observed by CLEO. | |
| dc.description | 9 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0302040 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0302040 | |
| dc.identifier | Phys.Rev.D67:074033,2003 | |
| dc.identifier | doi:10.1103/PhysRevD.67.074033 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179045 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Threshold effects in excited charmed baryon decays | |
| dc.type | text |