% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @INPROCEEDINGS{Wunderle:291432, author = {Wunderle, Alexander and Zimmer, Oliver and Virot, Romain and Theroine, Camille and Soldner, Torsten and Simson, Martin and Schmidt, Christian and Maisonobe, Romain and Konrad, Gertrud and Heil, Werner and Glück, Ferenc and Beck, Marcus and Baeßler, Stefan}, title = {{L}atest results from the $a${SPECT} experiment}, address = {Hamburg}, publisher = {Deutsches Elektronen-Synchrotron, DESY}, reportid = {PUBDB-2015-05404, DESY-PROC-2014-04}, pages = {452-455}, year = {2014}, abstract = {The $a$SPECT retardation spectrometer measures the $\beta - \bar{\nu}_e$ angular correlation coefficient \textit{a} in the $\beta$-decay of the free neutron.This measurement can be used to determine the ratio $\lambda = \frac{g_A}{g_V}$ of the weak coupling constants, as well as to search for physics beyond the standard electroweak model. In spring/summer 2013 \textit{a}SPECT had a successful beam time at the Institut Laue-Langevin (ILL), Grenoble/France. The goal of this beam time is to improve the current uncertainty of \textit{a} from $\frac{\Delta a}{a} \sim 5\\%$ to about 1\\%. To achieve this goal the systematic uncertainties of \textit{a}SPECT have to be understood accordingly. This is achieved via systematic tests, measurements of \textit{a} with different systematic parameter settings during the beam time and measurements afterwards, like the work-function fluctuations of electrodes or the magnetic field ratio of our spectrometer. Sophisticated simulations of our spectrometer are used to understand and reduce the systematic uncertainties further.}, month = {Aug}, date = {2014-08-25}, organization = {Panic2014, Hamburg (Germany), 25 Aug 2014 - 29 Aug 2014}, keywords = {electroweak interaction: model (autogen) / spectrometer (autogen) / angular correlation (autogen) / magnetic field (autogen) / weak coupling (autogen) / fluctuation (autogen) / electrode (autogen)}, cin = {ATLAS / CMS / UNI/EXP}, cid = {I:(DE-H253)ATLAS-20120731 / I:(DE-H253)CMS-20120731 / $I:(DE-H253)UNI_EXP-20120731$}, pnm = {611 - Fundamental Particles and Forces (POF3-611)}, pid = {G:(DE-HGF)POF3-611}, experiment = {EXP:(DE-MLZ)NOSPEC-20140101}, typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)15}, doi = {10.3204/DESY-PROC-2014-04/72}, url = {https://bib-pubdb1.desy.de/record/291432}, }