Conveners
Fundamental Symmetries: Fundamental Symmetries
- Ralf Seidl
Understanding the nature of dark matter is crucial in modern physics.
Among the diff?erent possibilities, the idea that dark matter could be con-
ned into a `dark sector' is attracting growing interest in recent years.
A combination of diff?erent standard model anomalies can be solved by
introducing a mediator particle with mass lower than the weak scale, connecting the dark sector to the...
The PRad experiment is aimed to determine proton charge radius from electron-proton elastic scattering. The measurements were performed in the experimental Hall B of Jefferson Lab using a novel non-magnetic spectrometer technique and windowless hydrogen gas flow target. This allowed to measure $ep$ scattering at angles as small as $0.7~^\circ$ to access unprecedentedly low $Q^2$ down to...
The NA62 experiment at CERN SPS was designed to measure BR(K+ -> pi+ nu nu-bar) with in-flight decays, a novel technique for this channel. NA62 took its first physics data in 2016, reaching the sensitivity to the decay at the Standard Model BR. The experiment collected 10 times more statistics in 2017 and a similar amount of data is expected from the 2018 run.
The result on K+ to pi+ nu...
The asymmetry parameter $\alpha_-$ of the parity-violating weak decay $\Lambda \rightarrow p \pi^-$ is a result of interference between $s$- and $p$-waves. The BESIII collaboration recently reported a value of $\alpha_-$ as 0.750(9)(4) - which is significantly higher than the current PDG value of 0.642(13).
In the same time, most of the polarization observables (from CLAS measurements) also...
