Year: 2026
Type: article
Abstract: A bstract We propose a novel collider probe of baryogenesis at TeV scale by measuring decay asymmetries into particle and anti-particle final states. Motivated by the idea of Dirac leptogenesis, we consider an extension of the standard model with new colored and SU(2) L singlet particles in such a way that the out-of-equilibrium decay of heavy colored fermions creates equal and opposite CP asymmetries in two sectors, prevented from equilibrating with each other. While the TeV scale viability of this mechanism requires a resonantly enhanced CP asymmetry, the latter also plays a crucial role leading to observable decay asymmetries in colliders. In addition to discussing conventional signatures of such heavy colored particles, namely, mono-jet plus missing transverse energy, displaced vertex, colored track at hadron colliders, we also show the unique possibility of measuring decay asymmetries via forward-backward and charge asymmetries at future muon colliders. In addition to being a verifiable TeV-scale baryogenesis scenario, the model also predicts a singlet scalar dark matter candidate consistent with the required thermal dark matter properties near the Higgs resonance.
Source: Journal of High Energy Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G130463927, G2214728054, G2229954460, G2432923657, G2595738051, PARTICLE PHYSICS AT THE UNIVERSITY OF PITTSBURGH, Investigations in High Energy Physics, Global QCD Analysis and Precision Electroweak Physics in High Energy Collider Phenomenology, Refining Searches for Physics Beyond the Standard Model, G6334714091, G638484911, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, G7879737111
OpenAlex ID: W4414787788
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