Branching Fractions for $ψ(2S) to γη'$ and $γη$
| dc.creator | Bai, J. Z. | |
| dc.date | 1998-06-03 | |
| dc.date.accessioned | 2026-07-07T10:32:18Z | |
| dc.date.available | 2026-07-07T10:32:18Z | |
| dc.description | We report the first measurements of the branching fractions: $B(ψ(2S) -> γη') = (1.54 \pm 0.31 \pm 0.23) x 10^{-4}$ and $B(ψ(2S) -> γη) = (0.53 \pm 0.31 \pm 0.08) x 10^{-4}$. The $ψ(2S)$ to $γη'$ result is consistent with expectations of a model that considers the possibility of $η' - η$ mixing. The ratio of the $ψ(2S)$ to $γη'$ and $ψ(2S)$ to $γη$ rates is used to determine the pseudoscalar octet-singlet mixing angle. | |
| dc.description | 10 pages with 3 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9806002 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9806002 | |
| dc.identifier | Phys.Rev.D58:097101,1998 | |
| dc.identifier | doi:10.1103/PhysRevD.58.097101 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178709 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Branching Fractions for $ψ(2S) to γη'$ and $γη$ | |
| dc.type | text |