Precise measurement of spin-averaged chi_{cJ}(1P) mass using photon conversions in psi(2S) -> gamma chi_{cJ}
| dc.creator | Ablikim, M. | |
| dc.creator | Bai, J. Z. | |
| dc.date | 2005-02-16 | |
| dc.date | 2005-03-29 | |
| dc.date.accessioned | 2026-07-07T10:28:32Z | |
| dc.date.available | 2026-07-07T10:28:32Z | |
| dc.description | Using photon conversions to e^+e^- pairs, the energy spectrum of inclusive photons from psi(2S) radiative decays is measured by BESII at the Beijing Electron-Positron Collider. The chi_{cJ}(1P) states (J=0,1,2) are clearly observed with energy resolution between 2.3 to 3.8 MeV, and their masses and the spin-averaged chi_{cJ} mass are determined to be M_{chi_{c0}}=3414.21\pm 0.39 \pm 0.27, M_{chi_{c1}}=3510.30\pm 0.14\pm 0.16, M_{chi_{c2}}=3555.70\pm 0.59 \pm 0.39 and M(^3P_{cog})=3524.85\pm 0.32 \pm 0.30 MeV/c^2. | |
| dc.description | 7 pages, 4 figures (one of them contain 3 sub-figtures). More descriptions on the fitting procedure are added. Additional figures, including the MC energy resolution distribution and pi0 mass distributions, are added | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0502031 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0502031 | |
| dc.identifier | Phys.Rev.D71:092002,2005 | |
| dc.identifier | doi:10.1103/PhysRevD.71.092002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177477 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Precise measurement of spin-averaged chi_{cJ}(1P) mass using photon conversions in psi(2S) -> gamma chi_{cJ} | |
| dc.type | text |