Radiative decays of bottomonia into charmonia and light mesons
| dc.creator | Gao, Ying-Jia | |
| dc.creator | Zhang, Yu-Jie | |
| dc.creator | Chao, Kuang-Ta | |
| dc.date | 2007-01-01 | |
| dc.date | 2007-01-02 | |
| dc.date.accessioned | 2026-07-07T07:37:54Z | |
| dc.date.available | 2026-07-07T07:37:54Z | |
| dc.description | In the framework of nonrelativistic QCD, we study the radiative decays of bottomonia into charmonia, including $Υ\to χ_{cJ}γ$, $Υ\to η_cγ$, $η_b\to J/ψγ$, and $χ_{bJ}\to J/ψγ$. We give predictions for their branching ratios with numerical calculations. E.g., we predict the branching ratio for $η_b\to J/ψγ$ is about $1\times 10^{-7}$. As a phenomenological model study, we further extend our calculation to the radiative decays of bottomonia into light mesons by assuming the $f_2(1270)$, $f_2'(1525)$ and other light mesons to be described by nonrelativistic $q\bar q ~(q=u,d,s)$ bound states with constituent quark masses. The calculated branching ratios for $Υ\to f_2(1270)γ$ and $Υ\to f_2'(1525)γ$ are roughly consistent with the CLEO data. Comparisons with radiative decays of charmonium into light mesons such as $J/ψ\to f_2(1270)γ$ are also given. In all calculations the QED contributions are taken into account and found to be significant in some processes. | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0701009 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0701009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/120936 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Radiative decays of bottomonia into charmonia and light mesons | |
| dc.type | text |