The eta_c(2980) formation in two-photon collisions at LEP energies
| dc.creator | The DELPHI Collaboration | |
| dc.creator | Abdallah, J. | |
| dc.date | 2003-11-01 | |
| dc.date.accessioned | 2026-07-07T12:02:07Z | |
| dc.date.available | 2026-07-07T12:02:07Z | |
| dc.description | eta_c(2980) production in gamma-gamma interactions has been detected via its decays into K0_s K+/- pi-/+, K+ K- K+ K- and K+ K- pi+ pi- in the data taken with the DELPHI detector at LEP1 and LEP2 energies. The two-photon radiative width averaged over all observed decay channels is Γ_{γγ} = 13.9 +/- 2.0 (stat.) +/- 1.4 (syst.) +/- 2.7 (BR) keV. No direct decay channel eta_c -> pi+ pi- pi+ pi- has been observed. An upper limit $Γ_{γγ}$ < 5.5 keV at 95% confidence level has been evaluated for this decay mode. | |
| dc.description | 15 pages, 6 figures, Accepted by Eur. Phys. J. C | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0311002 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0311002 | |
| dc.identifier | Eur.Phys.J.C31:481-489,2003 | |
| dc.identifier | doi:10.1140/epjc/s2003-01384-0 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207330 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | The eta_c(2980) formation in two-photon collisions at LEP energies | |
| dc.type | text |