Measurement of the chi_{c2} Polarization in psi(2S) to gamma chi_{c2}
| dc.creator | Ablikim, M. | |
| dc.date | 2004-09-11 | |
| dc.date.accessioned | 2026-07-07T10:28:28Z | |
| dc.date.available | 2026-07-07T10:28:28Z | |
| dc.description | The polarization of the chi_{c2} produced in psi(2S) decays into gamma chi_{c2} is measured using a sample of 14*10^6 psi(2S) events collected by BESII at the BEPC. A fit to the chi_{c2} production and decay angular distributions in psi(2S) to gamma chi_{c2}, chi_{c2} to pi pi and KK yields values x=A_1/A_0=2.08+/-0.44 and y=A_2/A_0=3.03 +/-0.66, with a correlation rho=0.92 between them, where A_{0,1,2} are the chi_{c2} helicity amplitudes. The measurement agrees with a pure E1 transition, and M2 and E3 contributions do not differ significantly from zero. | |
| dc.description | 6 pages, 4 figures, 1 table | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0409034 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0409034 | |
| dc.identifier | Phys.Rev.D70:092004,2004 | |
| dc.identifier | doi:10.1103/PhysRevD.70.092004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177459 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the chi_{c2} Polarization in psi(2S) to gamma chi_{c2} | |
| dc.type | text |