Parity-nonconserving (PNC) atomic effects originate from the electroweak interaction of atomic electrons with the nucleus via Z-boson exchange. Comparing experimental results with theoretical predictions of the standard model allows to search for ”new physics” beyond the standard model (e.g., a second Z-boson or new fermions) [1]. In the case of neutral atoms here is the discrepancy between the...

We investigate the properties of interacting Q-balls and boson stars that sit on top of each other in great detail. The model that describes these solutions is essentially a (gravitating) two-scalar field model where both scalar fields are complex. We construct interacting Qballs or boson stars with arbitrarily small charges but finite mass. We observe that in the interacting case – where the i...

The mass and the decay width of a Higgs boson in the minimal standard model are evaluated by a variational method in the limit of strong self-coupling interaction. The non-perturbative technique provides an interpolation scheme between strong-coupling regime and weak-coupling limit where the standard perturbative results are recovered. In the strong-coupling limit the physical mass and the deca...

Article history: Received 16 September 2016 Received in revised form 17 November 2016 Accepted 21 November 2016 Available online 24 November 2016 Editor: W.-D. Schlatter A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector a...

We study angularly excited as well as interacting non-topological solitons, so-called Qballs and their gravitating counterparts, so-called boson stars in 3 + 1 dimensions. Q-balls and boson stars carry a non-vanishing Noether charge and arise as solutions of complex scalar field models in a flat space-time background and coupled minimally to gravity, respectively. We present examples of interac...

We calculate the equal-time commutator of two fermionic currents within the framework of the 1+1 dimensional fully quantized theory, describing the interaction of massive fermions with a massive vector boson. It is shown that the interaction does not change the result obtained within the theory of free fermions.

The thermodynamic interaction of a free Fermion system is alternatively described by the coupling of particles with the vacuum of a scalar pseudo boson which features a self-interaction. The proper temperature is shown as a Lorentz scalar in a Lorentz invariant framework. At thermodynamic equilibrium, the Lorentz transformation of temperature is investigated based on the conceptions of the rela...

Article history: Received 16 September 2016 Received in revised form 17 November 2016 Accepted 21 November 2016 Available online 24 November 2016 Editor: W.-D. Schlatter A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector a...