A contribution to the discussion of the matter-antimatter asymmetry problem
| dc.creator | Urbanowski, K. | |
| dc.date | 1999-05-10 | |
| dc.date.accessioned | 2026-07-07T04:07:02Z | |
| dc.date.available | 2026-07-07T04:07:02Z | |
| dc.description | Using a more accurate effective Hamiltonian governing the time evolution in the particle-antiparticle subspace of states than the one obtained within the Lee-Oehme--Yang approach we show that in the case of particles created at the initial instant t = 0 only the masses of a stable particle and its antiparticle are the same at all t > 0 in a CPT invariant system, whereas the masses of an unstable particle and its antiparticle are equal only at t = 0 and then during their time evolution they become slightly different for times t >> 0 if CP symmetry is violated but CPT symmetry holds. This property is used to show that if the baryon number B is not conserved then the asymmetry between numbers of unstable baryons and antibaryons can arise in a CPT invariant system at t >> 0 even in the thermal equilibrium state of this system. | |
| dc.description | LaTex2e, 35 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9905279 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9905279 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/49000 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | A contribution to the discussion of the matter-antimatter asymmetry problem | |
| dc.type | text |