TY  - JOUR
AU  - Aitken, K.
AU  - McKeen, D.
AU  - Neder, T.
AU  - Nelson, A. E.
PY  - 2017
DA  - 2017//
TI  - Baryogenesis from oscillations of charmed or beautiful baryons
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 075009
EP  - 15pp
VL  - 96
IS  - 7
PB  - Amer Physical Soc
AB  - We propose a model for CP-violating oscillations of neutral, heavy-flavor baryons into antibaryons at rates which are within a few orders of magnitude of their lifetimes. The flavor structure of the baryon violation suppresses neutron oscillations and baryon-number-violating nuclear decays to experimentally allowed rates. We also propose a scenario for producing such baryons in the early Universe via the out-of-equilibrium decays of a neutral particle, after hadronization but before nucleosynthesis. We find parameters where CP-violating baryon oscillations at a temperature of a few MeV could result in the observed asymmetry between baryons and antibaryons. Furthermore, part of the relevant parameter space for baryogenesis is potentially testable at Belle II via decays of heavy-flavor baryons into an exotic neutral fermion. The model introduces four new particles: three light Majorana fermions and a colored scalar. The lightest of these fermions is typically long lived on collider time scales and may be produced in decays of bottom and possibly charmed hadrons.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1708.01259
UR  - https://doi.org/10.1103/PhysRevD.96.075009
DO  - 10.1103/PhysRevD.96.075009
LA  - English
N1  - WOS:000412516100001
ID  - Aitken_etal2017
ER  -