Conveners
Tu - 2
- Session Chair: Geoffrey Greene (University of Tennessee)
Dr
Andreas Ringwald
(DESY)
10/09/2013, 10:50
Oral
Worldwide a number of new X-ray free electron lasers are operating or being constructed currently. In this overview presentation we will consider their potential application for fundamental physics, in particular for non-linear and non-perturbative QED and for searches for very weakly interacting slim particles beyond the Standard Model, such as axion-like particles or hidden photons.
Prof.
Valery Fedorov
(Petersburg Nuclear Physics Institute)
10/09/2013, 11:20
Oral
Here we discuss a modern status of crystal diffraction experiment for searching the electric dipole moment of a neutron (nEDM) with the sensitivity comparable or exceeding that for the most sensitive now magnetic resonance method using ultra cold neutrons (the current best limit is D_n < 3x10^{-26} e cm at 90% C.L. obtained at the ILL reactor in Grenoble resulted the long-term efforts of PNPI...
Dr
Bastian Märkisch
(Physikalisches Institut, Universität Heidelberg)
10/09/2013, 11:40
Oral
Precision measurements of angular correlation coefficients in neutron beta decay provide unique information about the weak interaction and contribute significantly to precision tests of the standard model of particle physics. In particular, measuring the beta asymmetry A in polarized neutron decay is the most precise way to determine the ratio of axialvector and vector coupling constants. ...
Dr
Marcus Beck
(Helmholtz-Institut Mainz and Johannes Gutenberg Universität Mainz)
10/09/2013, 12:00
Oral
The aSPECT experiment aims to determine the beta-neutrino angular correlation in the decay of the free neutron to determine the ratio of the weak coupling constants gA/gV. The past years have been used to optimize the set-up and to investigate and minimize systematic effects. A new beam-time to determine the beta-neutrino angular correlation with an uncertainty of ~1% has taken place with...
Prof.
Joerg Pretz
(RWTH Aachen University)
10/09/2013, 12:20
Oral
The existence of permanent electric dipole moments (EDMs)
of elementary particles violates
two fundamental symmetries, time reversal, $\mathcal{T}$,
and parity $\mathcal{P}$.
Assuming that the combined symmetry transformation $\mathcal{CPT}$,
where $\mathcal{C}$ is the charge conjugation,
is conserved by all interactions, $\mathcal{T}$ violation is equivalent
to $\mathcal{CP}$...
Dr
Dieter Eversheim
(Helmholtz Institut fuer Strahlen- und Kernphysik, University Bonn, Germany)
10/09/2013, 12:45
Oral
At the Cooler Synchrotron COSY a novel (P-even, T-odd) true null test of time-reversal invariance is planned as an internal target transmission experiment, which is not sensitive to final state interactions. The parity conserving time-reversal violating observable, the total cross-section asymmetry Ay,xz, will be measured to an accuracy of 10-6. This quantity is determined using a 135 MeV...
