Cosmological Bound on the Decay $π^0\rightarrowγX$
| dc.creator | Ng, Kin-Wang | |
| dc.date | 1993-06-29 | |
| dc.date.accessioned | 2026-07-07T10:34:58Z | |
| dc.date.available | 2026-07-07T10:34:58Z | |
| dc.description | Using the upper bound on the effective number of light neutrino species during primordial nucleosynthesis and the cosmological pion-pole mechanism $γγ\rightarrow π^0\rightarrow γX$, we obtain an upper limit on the branching ratio for the decay BR$(π^0\rightarrow γX)<3\times 10^{-13}$, where $X$ is any long-lived weakly interacting neutral vector particle with mass smaller than the neutral pion mass. | |
| dc.description | 7 pages, IP-ASTP-03-93 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9306326 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9306326 | |
| dc.identifier | Phys.Rev.D48:2941-2942,1993 | |
| dc.identifier | doi:10.1103/PhysRevD.48.2941 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179620 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Cosmological Bound on the Decay $π^0\rightarrowγX$ | |
| dc.type | text |