Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Märkisch Bastian"'
Autor:
Lommatzsch Ina, Holderer Olaf, Frielinghaus Henrich, Su Yixi, Pedersen Björn, Meven Martin, Busch Sebastian, Stieghorst Christian, Senyshyn Anatoliy, Georgii Robert, Märkisch Bastian, Pasini Stefano, Förster Stephan, Müller Martin, Müller-Buschbaum Peter
Publikováno v:
EPJ Web of Conferences, Vol 286, p 00001 (2023)
This edition of the European Conference on Neutron Scattering, which is held every four years, took place in Garching, Germany and gathered over 500 people from all areas of neutron science. From new source or instrumental concepts to fundamental phy
Externí odkaz:
https://doaj.org/article/66dcf0b40b1f4f7b9364279104a71b2a
Publikováno v:
EPJ Web of Conferences, Vol 219, p 05007 (2019)
Discrepancies from beam and bottle type experiments measuring the neutron lifetime are on the 4σ level. In recent publications Fornal and Grinstein proposed that the puzzle could be solved if the neutron would decay on the one percent level via a da
Externí odkaz:
https://doaj.org/article/1d7f916ccebe4843b3d37f37ff1f0aec
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, Vol 219, p 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:
https://doaj.org/article/03e01ccddfd549ccbc31c70865751bc1
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
Publikováno v:
EPJ Web of Conferences, Vol 219, p 04006 (2019)
In addition to the common 3-body decay of the neutron n → pe-ν̅e 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 magnetic quantum numbers.
Externí odkaz:
https://doaj.org/article/5563f676a38b4892922a1b114940823e
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, Vol 219, p 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:
https://doaj.org/article/78aafc8d2dd641c283a5ef32cb75dcde
Publikováno v:
EPJ Web of Conferences, Vol 219, p 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:
https://doaj.org/article/0bb3848b39bd42aeaed93fc04fbe080c
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:
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