دورية أكاديمية
Constraints on the Dark Matter Interpretation $n \rightarrow \chi + e^+ e^-$ of the Neutron Decay Anomaly with the PERKEO II experiment
| العنوان: | Constraints on the Dark Matter Interpretation $n \rightarrow \chi + e^+ e^-$ of the Neutron Decay Anomaly with the PERKEO II experiment |
|---|---|
| المؤلفون: | Klopf, M., Jericha, E., Märkisch, B., Saul, H., Soldner, T., Abele, H. |
| المساهمون: | Institut Laue-Langevin (ILL), ILL |
| المصدر: | ISSN: 0031-9007. |
| بيانات النشر: | HAL CCSD American Physical Society |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | experimental results, interpretation of experiments, n: decay modes, branching ratio: upper limit, n: branching ratio, dark matter: mass: lower limit, electron: pair production, n: semileptonic decay, particle: stability, 14.20.Dh, S017:Desig=5, S030UDM, Nuclear Physics, lifetime: measured, n: rare decay, n: lifetime, 12.15.Ji, 12.60.-i, anomaly, 13.30.Ce, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], hist, phil |
| الوصف: | International audience ; Discrepancies from in-beam- and in-bottle-type experiments measuring the neutron lifetime are on the 4σ standard deviation level. In a recent publication Fornal and Grinstein proposed that the puzzle could be solved if the neutron would decay on the one percent level via a dark decay mode, one possible branch being n→χ+e+e-. With data from the Perkeo II experiment we set limits on the branching fraction and exclude a one percent contribution for 95% of the allowed mass range for the dark matter particle. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://hal.archives-ouvertes.fr/hal-02144179Test |
| الإتاحة: | https://doi.org/10.1103/PhysRevLett.122.222503Test https://hal.archives-ouvertes.fr/hal-02144179Test |
| حقوق: | undefined |
| رقم الانضمام: | edsbas.3CB74B4B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |