Frontiers in Particle and Astroparticle Physics

Asymmetric dark matter and CP violating scatterings in a UV complete model

I Baldes, NF Bell, AJ Millar, RR Volkas

2015-10-21

We explore possible asymmetric dark matter models using CP violating scatterings to generate an asymmetry. In particular, we intro..

Dark matter at the LHC: Effective field theories and gauge invariance

NF Bell, Y Cai, JB Dent, RK Leane, TJ Weiler

2015-09-15

Effective field theory (EFT) formulations of dark matter interactions are a convenient and popular way to quantify LHC bounds on d..

Annihilating asymmetric dark matter

NF Bell, S Horiuchi, IM Shoemaker

2015-01-05

The relic abundance of particle and antiparticle dark matter (DM) need not be vastly different in thermal asymmetric dark matter (..

The role of CP violating scatterings in baryogenesis - Case study of the neutron portal

I Baldes, NF Bell, A Millar, K Petraki, RR Volkas

2014-11-01

Many baryogenesis scenarios invoke the charge parity (CP) violating out-of-equilibrium decay of a heavy particle in order to expla..

Particle-antiparticle asymmetries from annihilations

I Baldes, NF Bell, K Petraki, RR Volkas

2014-10-30

An extensively studied mechanism to create particle-antiparticle asymmetries is the out-of-equilibrium and CP violating decay of a..

Leptophilic dark matter with Z′ interactions

NF Bell, Y Cai, RK Leane, AD Medina

2014-08-28

We consider a scenario where dark matter (DM) interacts exclusively with Standard Model leptons at tree level. Because of the abse..

Co-annihilating dark matter: Effective operator analysis and collider phenomenology

NF Bell, Y Cai, AD Medina

2014-06-02

We study dark matter (DM) models in which there are two dark sector particles, χ1 and χ2, of near mass. In such models, co-annihil..

Realistic neutron star constraints on bosonic asymmetric dark matter

NF Bell, A Melatos, K Petraki

2013-06-07

It has been argued that the existence of old neutron stars excludes the possibility of nonannihilating light bosonic dark matter, ..