Poster

The discovery of the Higgs boson in 2012 by the CMS and ATLAS collaborations marked the start of the exploration of the Higgs sector of particle physics. The properties of the Higgs sector under CP symmetry have been investigated mostly in its couplings to gauge bosons. [...]

The use of Effective Field Theories (EFTs) in the search of NP is becoming more and more important given the lack of clear experimental signs of BSM physics. In particular, the Standard Model EFT (SMEFT) has become one of the most popular choices. [...]

We study axion effective field theories (EFTs), with a focus on axion couplings to massive chiral gauge fields. We investigate the EFT interactions that participate in processes with an axion and two gauge bosons, and we show that, when massive chiral gauge fields are present, such interactions do not entirely originate from the usual anomalous EFT terms. [...]

The use of Effective Field Theories (EFTs) in the search of NP is becoming more and more important given the lack of clear experimental signs of BSM physics. In particular, the Standard Model EFT (SMEFT) has become one of the most popular choices. [...]

The use of Effective Field Theories (EFTs) in the search of New Physics is becoming more and more important given the lack of clear experimental signs of BSM physics. In particular, the Standard Model EFT (SMEFT) has become one of the most popular choices. [...]

Artificial antiferromagnets have a long tradition in the study of spin transport in magnetic materials. Here we use multilayer spin emitters prepared by oblique incidence deposition (OID) [1] that sets a uniaxial anisotropy in the magnetic materials such that the magnetic static interlayer coupling is not needed to stabilize the antiferromagnetic state. [...]

Laser-plasma acceleration[1], among others[2,3],promises to be a powerful technology for driving future compact light sources. LUX, which is operated by University of Hamburg,is such a laser-plasma accelerator [...]

The LUX laser-plasma-accelerator [1], built in close collaboration of the University of Hamburg and DESY, isdesigned to provide plasma electron beams with enhanced stability as a driver for future compact light sources.After significant in-house development of the driving 200 TW ANGUS laser system, the laser has reached anoperational stability, that enables us to repeatedly demonstrate day-long operation of the laser-plasma acceleratorwith several 10k consecutive electron beams and high availability. The electron beam quality is sufficient to drivea miniature undulator, generating synchrotron-type undulator radiation at wavelengths well below 9 nm.We report on experimental results of the long-term stability of the ANGUS laser system with sub 2% energystability over a full day, and pulse duration stability on the 1% level, that have been enabled through activefeedback loops at various stages within the amplification chain [...]

RNO-G targets neutrino energies above 10 PeV. It uses the detection of the produced radio signals from the particle showers due to highly energetic neu- trinos interacting in the ice. [...]