Neutron Decay with PERC: a Progress Report

Konrad, Gertrud; Abele, H.; Beck, M.; Drescher, C; Dubbers, D.; Erhart, Jaqueline; Fillunger, H.; Gösselsberger, C.; Heil, W.; Horvath, M; Jericha, E.; Klauser, Christine; Klenke, J.; Märkisch, Bastian; Maix, R.; Mest, Holger; Nowak, S.; Rebrova, N.V.; Roick, Christoph; Sauerzopf, C.; Schmidt, Ulrich; Söldner, T.; Wang, X; Zimmer, O.

doi:10.1088/1742-6596/340/1/012048

Cited by 25 publications

(31 citation statements)

References 27 publications

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“…Precise symmetry tests of various kinds are coming within reach with the proposed facilities Nab [25] and PERC [26,27]. The spectra and angular distributions of the emerging decay particles will be distortion-free on the level of 10 −4 , more than 10 times better than achieved today [28].…”

Section: Neutron β-Decay Within Priority Area Bmentioning

confidence: 99%

Precision experiments with cold and ultra-cold neutrons

Abele

2016

Hyperfine Interact

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We present selected results from the first round of the Priority Programme SPP 1491. This programme gets funding from the German DFG and the Austrian FWF funding agencies. The aim of this programme is to address basic open questions in particle and astrophysics using a specific tool: the neutron, which allows the search for new physics becoming manifest itself as small deviations from expectations.Keywords Standard model neutron β-decay · The quantum bouncing ball qBOUNCE

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Section: Neutron β-Decay Within Priority Area Bmentioning

confidence: 99%

Precision experiments with cold and ultra-cold neutrons

Abele

2016

Hyperfine Interact

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“…The PERC experiment also includes a measurement of b in the scientific program [93]. The setup will use a cold neutron beam and a long super-conducting channel where neutrons decay.…”

Section: The Fierz Interference Term Bmentioning

confidence: 99%

Prospects for precision measurements in nuclear decay in the LHC era

2013

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Precision measurements in nuclear β decay offer a sensitive window to search for new physics beyond the standard electroweak model. Searches for new physics are also a strong motivation for experiments carried out at the high energy frontier. It is instructive to confront results from the low energy and the high energy frontiers in order to look for possible complementarities. This paper reviews the constraints on new physics obtained from nuclear and neutron decays and compares them to those from other semi-leptonic processes and from the LHC. The sensitivity requirements of new precision experiments in β decay, to impact the search for new physics at the light of current and projected LHC results, are updated. Experimental developments in nuclear and neutron β decay are discussed with emphasis on their projected goals to improve the limits on exotic weak couplings.

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“…In order to improve the precision of neutron decay correlations, several new instruments have been built or are presently under construction worldwide: aSPECT [96,97,98,99], aCORN [100,101], PERKEO III [102], UCNb [103], UCNB [104,105], Nab [106,107,108], PERC [109,110]. New results for a and A from aSPECT [111], aCORN [112], and PERKEO III are expected soon.…”

Section: Angular Correlation Coefficientsmentioning

confidence: 99%

Cold and Ultra-cold Neutrons as Probes of New Physics

Konrad¹,

Abele²

2017

Proceedings of the 26th International Nuclear Physics Conference — PoS(INPC2016)

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Despite the great success of the Standard Model, many key questions in particle physics, astrophysics, and cosmology are unanswered. In particular, more than 95 % of the universe consists of unknown dark matter and dark energy. Today, a major goal of particle physics is to look for evidence of new physics beyond the Standard Model. Collider searches for new physics are well suited to the direct production of new high-mass particles, whereas low-energy precision experiments search for traces that new particles leave in known processes. Direct and indirect evidence of new physics are highly complementary. High-precision experiments with extremely slow, cold and ultra-cold neutrons address some of the unanswered questions, for instance, on the nature of the fundamental forces and underlying symmetries, the origin, evolution, and fate of the universe, or on the nature of the gravitational force at very small distances. For example, the limit on the electric dipole moment of the neutron constrains the CP violating phases, the lifetime of the neutron determines the relative helium abundance in the universe, and neutrons bouncing over a mirror probe dark matter and dark energy. New facilities and technological developments now give window for significant improvement in precision by one to two orders of magnitude. In this paper, we will give an overview of current and planned facilities and experiments, as well as an overview of some of the applications of neutrons to astrophysics, cosmology, and physics beyond the Standard Model.

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Neutron Decay with PERC: a Progress Report

Cited by 25 publications

References 27 publications

Precision experiments with cold and ultra-cold neutrons

Precision experiments with cold and ultra-cold neutrons

Prospects for precision measurements in nuclear decay in the LHC era

Cold and Ultra-cold Neutrons as Probes of New Physics

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