BRAND – search for BSM physics at TeV scale by exploring transverse polarization of electrons emitted in neutron decay
| Autor: | M. Kuzniak, L. De Keukeleere, K. Lojek, Jacek Zejma, T. Soldner, K. Pysz, H. Przybilski, M. Perkowski, Nathal Severijns, D. Rozpedzik, M. Kolodziej, A. Kozela, Kazimierz Bodek, A. R. Young |
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| Přispěvatelé: | Institut Laue-Langevin (ILL), ILL |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
scale: TeV
QC1-999 interaction: tensor n: decay Electron Weak interaction [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences n: correlation Nuclear physics effective field theory weak interaction 0103 physical sciences polarization: transverse Neutron 010306 general physics Nuclear Experiment Physics nucleus: semileptonic decay 010308 nuclear & particles physics Polarization (waves) coupling: tensor Beta decay final-state interaction electron: spectrum Transverse plane Beamline electron: polarization proposed experiment: sensitivity |
| Zdroj: | EPJ Web Conf. International Workshop on Particle Physics at Neutron Sources 2018 International Workshop on Particle Physics at Neutron Sources 2018, May 2018, Grenoble, France. pp.04001, ⟨10.1051/epjconf/201921904001⟩ EPJ Web of Conferences, Vol 219, p 04001 (2019) 'EPJ Web of Conferences ', vol: 219, pages: 04001-1-04001-10 (2019) |
| DOI: | 10.1051/epjconf/201921904001⟩ |
| Popis: | Neutron and nuclear beta decay correlation coefficients are linearly sensitive to the exotic scalar and tensor interactions that are not included in the Standard Model (SM). The proposed experiment will measure simultaneously 11 neutron correlation coefficients (a, a, B, D, H, L, N, R, S, U, V) where 7 of them (H, L, N, R, S, U, V) depend on the transverse electron polarization – a quantity that vanishes for the SM weak interaction. The neutron decay correlation coefficients H, L, S, U, V were never attempted experimentally before. The expected ultimate sensitivity of the proposed experiment that currently takes off on the cold neutron beamline PF1B at the Institut Laue-Langevin, Grenoble, France, is comparable to that of the planned electron spectrum shape measurements in neutron and nuclear β decays but offers completely different systematics and additional sensitivity to imaginary parts of the scalar and tensor couplings. |
| Databáze: | OpenAIRE |
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