Helicity Zero Particles
| dc.creator | Perkins, W. A. | |
| dc.date | 2004-09-14 | |
| dc.date.accessioned | 2026-07-07T03:53:27Z | |
| dc.date.available | 2026-07-07T03:53:27Z | |
| dc.description | In this paper we consider the possibility that a vector particle with mass might exist in only one helicity state, rather than the usual three states with helicity equal to +1, -1, and 0. Massless particles, of course, need only have one helicity state. (For invariance under parity, they need two.) We show that a massive vector particle can exist only in the helicity-0 state, if it is composed of a fermion-antifermion pair and they are massless. This requires the mass to be generated by the interaction between the massless particles. An interaction of the form Psi^dagger i gamma_4 gamma_mu Psi is attractive between particle and antiparticle and preserves helicity. Methods for experimentally distinguishing an helicity-0 vector particle from both a spin-0 pseudoscalar particle and a spin-1 vector particle are discussed. | |
| dc.description | LaTex, 11 pages, 2 Postscript (EPS) figures, 16 references | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0409166 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0409166 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/43839 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Helicity Zero Particles | |
| dc.type | text |