Covariant amplitudes for mesons
| dc.creator | Zhu, Jie-Jie | |
| dc.creator | Yan, Mu-Lin | |
| dc.date | 1999-03-15 | |
| dc.date.accessioned | 2026-07-07T04:06:37Z | |
| dc.date.available | 2026-07-07T04:06:37Z | |
| dc.description | We show how to construct covariant amplitudes for processes involving higher spins in this paper. First we give the explicit expressions of Rarita-Schwinger wave functions and propagators for bosons with spins, then kinematic singularity free 3-leg effective vertexes are derived and given in a list. Equivalence relations are worked out to get these independent vertexes. Constraints of space reflection symmetry and boson symmetry are considered and shown in a explicit way. Some helicity amplitudes for two-body decays in center of frame are calculated. Finally the covariant helicity amplitudes for the process $a_1\to π^+π^+π^-$ are constructed to illustrate how to include background (1PI) amplitudes. Both background amplitudes and resonance amplitudes are needed to give reliable descriptions to high energy reactions. | |
| dc.description | 30 pages, RevTeX, 3 eps figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9903349 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9903349 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48840 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Covariant amplitudes for mesons | |
| dc.type | text |