0000000000367234

AUTHOR

R. Stoepler

showing 3 related works from this author

Neutron to mirror-neutron oscillations in the presence of mirror magnetic fields

2009

We performed ultracold neutron (UCN) storage measurements to search for additional losses due to neutron (n) to mirror-neutron (n') oscillations as a function of an applied magnetic field B. In the presence of a mirror magnetic field B', UCN losses would be maximal for B = B'. We did not observe any indication for nn' oscillations and placed a lower limit on the oscillation time of tau_{nn'} > 12.0 s at 95% C.L. for any B' between 0 and 12.5 uT.

PhysicsNuclear and High Energy PhysicsAntiparticle010308 nuclear & particles physicsOscillationAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesHardware_PERFORMANCEANDRELIABILITYFermion[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciences3. Good healthMagnetic fieldNuclear physicsTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITYAntimatter0103 physical sciencesUltracold neutronsNeutronNuclear Experiment (nucl-ex)010306 general physicsNucleonNuclear ExperimentNuclear Experiment
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Towards a new measurement of the neutron electric dipole moment

2009

International audience; The effort towards a new measurement of the neutron electric dipole moment (nEDM) at the Paul Scherrer Institut's (PSI) new high intensity source of ultracold neutrons (UCN) is described. The experimental technique relies on Ramsey's method of separated oscillatory fields, using UCN in vacuum with the apparatus at ambient temperature. In the first phase, R&D towards the upgrade of the RAL/Sussex/ILL apparatus is being performed at the Institut Laue-Langevin (ILL). In the second phase the apparatus, moved from ILL to PSI, will allow an improvement in experimental sensitivity by a factor of 5. In the third phase, a new spectrometer should gain another order of magnitud…

PhysicsNuclear and High Energy PhysicsTime reversal violationElectric dipole momentSpectrometerNeutron electric dipole momentPhysics::Instrumentation and Detectors010308 nuclear & particles physicsMagnetometerPhase (waves)[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]7. Clean energy01 natural sciencesMagnetic fieldlaw.inventionElectric dipole momentlawElectric field0103 physical sciencesUltracold neutronsAtomic physicsUltracold neutronsNuclear Experiment010306 general physicsInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Additional results from the first dedicated search for neutron–mirror neutron oscillations

2008

International audience; The existence of a mirror world holding a copy of our ordinary particle spectrum could lead to oscillations between the neutron (n) and its mirror partner (n′). Such oscillations could manifest themselves in storage experiments with ultracold neutrons whose storage lifetime would depend on the applied magnetic field. Here, extended details and measurements from the first dedicated experimental search for nn′ oscillations published in [G. Ban, K. Bodek, M. Daum, R. Henneck, S. Heule, M. Kasprzak, N. Khomutov, K. Kirch, S. Kistryn, A. Knecht, P. Knowles, M. Kuźniak, T. Lefort, A. Mtchedlishvili, O. Naviliat-Cuncic, C. Plonka, G. Quéméner, M. Rebetez, D. Rebreyend, S. R…

PhysicsNuclear and High Energy Physics010308 nuclear & particles physicsDark matter[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]Mirror neutrons01 natural sciencesNeutronoscillationsMagnetic fieldNuclear physics0103 physical sciencesUltracold neutronsNeutron010306 general physicsUltracold neutronsInstrumentation
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