Hadronic loop contributions to $J/ψ$ and $ψ^\prime$ radiative decays into $γη_c$ or $γη_c^\prime$
| dc.creator | Li, Gang | |
| dc.creator | Zhao, Qiang | |
| dc.date | 2007-09-28 | |
| dc.date | 2008-10-22 | |
| dc.date.accessioned | 2026-07-07T12:13:46Z | |
| dc.date.available | 2026-07-07T12:13:46Z | |
| dc.description | Intermediate hadronic meson loop contributions to $J/ψ$, $ψ^\prime \to γη_c$ ($γη_c^\prime$) are studied apart from the dominant M1 transitions in an effective Lagrangian approach. Due to the property of the unique antisymmetric tensor coupling in $V\to VP$, the hadronic loop transitions provide explicit corrections to the M1 transition amplitudes derived from the naive "quenched" $c\bar{c}$ transitions via the coupling form factors. This mechanism interfering with the M1 transition amplitudes naturally accounts for the deviations from the Godfrey-Isgur model predictions in $J/ψ$ and $ψ^\prime\to γη_c$. It also predicts a small branching ratio of $ψ^\prime\to γη_c^\prime$, which can be examined by experimental measurements at BES and CLEO-c. | |
| dc.description | 10 pages, 2 eps figures, revtex4; version to appear on Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/0709.4639 | |
| dc.identifier | http://arxiv.org/abs/0709.4639 | |
| dc.identifier | Phys.Lett.B670:55-60,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.10.033 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/210963 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Hadronic loop contributions to $J/ψ$ and $ψ^\prime$ radiative decays into $γη_c$ or $γη_c^\prime$ | |
| dc.type | text |