activity
19972026
most citedMeasurement of the permanent electric dipole moment of the neutron

619 citations · 3k across the 83 of their papers we have counts for

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hep-ex2026

Laboratory constraints on peV-scale mass splitting between ordinary and sterile neutron states

N. J. Ayres, Z. Berezhiani, G. Bison +19

Sterile states of matter, represented by a parallel ``mirror'' sector, may contribute to the observed dark matter in the Universe. We investigated the parameter space of neutron $(…

hep-ex2025

Ultracold neutron energy spectrum and storage properties from magnetically induced spin depolarization

N. J. Ayres, G. Ban, G. Bison +53

We present a novel method for extracting the energy spectrum of ultracold neutrons from magnetically induced spin depolarization measurements using the n2EDM apparatus. This method…

hep-ex2020★ 619 cited

Measurement of the permanent electric dipole moment of the neutron

C. Abel, S. Afach, N. J. Ayres +81

We present the result of an experiment to measure the electric dipole moment (EDM) of the neutron at the Paul Scherrer Institute using Ramsey's method of separated oscillating magn…

hep-ex2015★ 453 cited

A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron

J. M. Pendlebury, S. Afach, N. J. Ayres +47

We present for the first time a detailed and comprehensive analysis of the experimental results that set the current world sensitivity limit on the magnitude of the electric dipole…

hep-ex2014★ 41 cited

Constraining interactions mediated by axion-like particles with ultracold neutrons

S. Afach, G. Ban, G. Bison +35

We report a new limit on a possible short range spin-dependent interaction from the precise measurement of the ratio of Larmor precession frequencies of stored ultracold neutrons a…

hep-ex2013

MuLan Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant

T. P. Gorringe

We report results from the MuLan measurement of the positive muon lifetime. The experiment was conducted at the Paul Scherrer Institute using a time-structured surface muon beam an…