Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Maerkisch, Bastian"'
High-precision measurements require optimal setups and analysis tools to achieve continuous improvements. Systematic corrections need to be modeled with high accuracy and known uncertainty to reconstruct underlying physical phenomena. To this end, we
Externí odkaz:
http://arxiv.org/abs/2205.07625
Autor:
Dubbers, Dirk, Märkisch, Bastian
Publikováno v:
Annual Review of Nuclear and Particle Science, Volume 71, 139-63, 2021
The impact of new and highly precise neutron \b{eta} decay data is reviewed. We focus on recent results from neutron lifetime, \b{eta} asymmetry, and electron-neutrino correlation experiments. From these results, weak interaction parameters are extra
Externí odkaz:
http://arxiv.org/abs/2106.02345
Autor:
Saul, Heiko, Roick, Christoph, Abele, Hartmut, Mest, Holger, Klopf, Michael, Petukhov, Alexander, Soldner, Torsten, Wang, Xiangzun, Werder, Dominik, Märkisch, Bastian
Publikováno v:
Phys. Rev. Lett. 125, 112501 (2020)
In the standard model of particle physics, the weak interaction is described by vector and axial-vector couplings only. Non-zero scalar or tensor interactions would imply an additional contribution to the differential decay rate of the neutron, the F
Externí odkaz:
http://arxiv.org/abs/1911.01766
Autor:
Schott, Wolfgang, Gutsmiedl, Erwin, Bernert, Karina, Engels, Ralf, Gernhäuser, Roman, Huber, Stefan, Konorov, Igor, Märkisch, Bastian, Paul, Stephan, Roick, Christoph, Saul, Heiko, Spasova, Suzana
In addition to the common 3-body decay of the neutron $n\rightarrow p e^-\overline{\nu_e}$ there should exist an effective 2-body subset with the electron and proton forming a Hydrogen bound state with well defined total momentum, total spin and magn
Externí odkaz:
http://arxiv.org/abs/1910.04885
Autor:
Wang, Xiangzun, Ziener, Carmen, Abele, Hartmut, Bodmaier, Stefan, Dubbers, Dirk, Erhart, Jaqueline, Hollering, Alexander, Jericha, Erwin, Klenke, Jens, Fillunger, Harald, Heil, Werner, Klauser, Christine, Konrad, Gertrud, Lamparth, Max, Lauer, Thorsten, Klopf, Michael, Maix, Reinhard, Märkisch, Bastian, Mach, Wilfried, Mest, Holger, Moser, Daniel, Pethoukov, Alexander, Raffelt, Lukas, Rebrova, Nataliya, Roick, Christoph, Saul, Heiko, Schmidt, Ulrich, Soldner, Torsten, Virot, Romain, Zimmer, Oliver
Publikováno v:
EPJ Web of Conferences 219, 04007 (2019)
The PERC (Proton and Electron Radiation Channel) facility is currently under construction at the research reactor FRM II, Garching. It will serve as an intense and clean source of electrons and protons from neutron beta decay for precision studies. I
Externí odkaz:
http://arxiv.org/abs/1905.10249
Publikováno v:
EPJ Web of Conferences 219, 04005 (2019)
The beta asymmetry in neutron beta decay is used to determine the ratio of axial-vector coupling to vector coupling most precisely. In electron spectroscopy, backscattering of electrons from detectors can be a major source of systematic error. We pre
Externí odkaz:
http://arxiv.org/abs/1905.10189
Autor:
Märkisch, Bastian, Mest, Holger, Saul, Heiko, Wang, Xiangzun, Abele, Hartmut, Dubbers, Dirk, Klopf, Michael, Petoukhov, Alexander, Roick, Christoph, Soldner, Torsten, Werder, Dominik
Publikováno v:
Phys. Rev. Lett. 122, 242501 (2019)
We present a precision measurement of the axial-vector coupling constant $g_A$ in the decay of polarized free neutrons. For the first time, a pulsed cold neutron beam was used for this purpose. By this method, leading sources of systematic uncertaint
Externí odkaz:
http://arxiv.org/abs/1812.04666
Autor:
Soldner, Torsten, Abele, Hartmut, Konrad, Gertrud, Märkisch, Bastian, Piegsa, Florian M., Schmidt, Ulrich, Theroine, Camille, Sánchez, Pablo Torres
Publikováno v:
EPJ Web of Conferences 219, 10003 (2019)
Pulsed beams have tremendous advantages for precision experiments with cold neutrons. In order to minimise and measure systematic effects, they are used at continuous sources in spite of the related substantial decrease in intensity. At the European
Externí odkaz:
http://arxiv.org/abs/1811.11692
Autor:
Abele, Hartmut, Jenke, Tobias, Jericha, Erwin, Konrad, Gertrud, Märkisch, Bastian, Plonka, Christian, Schmidt, Ulrich, Soldner, Torsten
This work presents selected results from the first round of the DFG Priority Programme SPP 1491 "precision experiments in particle and astroparticle physics with cold and ultra-cold neutrons".
Comment: 8 pages, 4 figures, JPS Conference Proceedi
Comment: 8 pages, 4 figures, JPS Conference Proceedi
Externí odkaz:
http://arxiv.org/abs/1412.5013
Autor:
Maerkisch, Bastian, Abele, Hartmut
The matrix element \Vud of the CKM matrix can be determined by two independent measurements in neutron decay: the neutron lifetime $\tau_n$ and the ratio of coupling constants $\lambda=g_A/g_V$, which is most precisely determined by measurements of t
Externí odkaz:
http://arxiv.org/abs/1410.4220