An Explanation for the rho-pi Puzzle of J/psi and psi' Decays
| dc.creator | Chen, Yu-Qi | |
| dc.creator | Braaten, Eric | |
| dc.date | 1998-01-06 | |
| dc.date | 1998-02-05 | |
| dc.date.accessioned | 2026-07-07T10:33:36Z | |
| dc.date.available | 2026-07-07T10:33:36Z | |
| dc.description | We propose a new explanation for the longstanding puzzle of the tiny branching fraction of psi' -> rho pi relative to that for J/psi -> rho pi. In the case of J/psi, we argue that this decay is dominated by a higher Fock state in which the ccbar pair is in a color-octet ^3S_1 state and via annihilate process ccbar -> qqbar. In the case of the psi', we argue that the probability for the ccbar pair in this higher Fock state to be close enough to annihilate is suppressed by a dynamical effect related to the small energy gap between the mass of the psi' and the DDbar threshold. | |
| dc.description | 9 pages, cut the paper, small change to the discussion about psi' suppresion mechanism | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9801226 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9801226 | |
| dc.identifier | Phys.Rev.Lett.80:5060-5063,1998 | |
| dc.identifier | doi:10.1103/PhysRevLett.80.5060 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179171 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | An Explanation for the rho-pi Puzzle of J/psi and psi' Decays | |
| dc.type | text |