Experimental search for neutron–mirror neutron oscillations using storage of ultracold neutrons

Serebrov, A. P.; Aleksandrov, E. B.; Dovator, N. A.; Dmitriev, S. P.; Fomin, A. K.; Geltenbort, P.; Харитонов, А. Г.; Krasnoschekova, I. A.; Lasakov, M. S.; Murashkin, A. N.; Shmelev, G.E.; Varlamov, V. E.; Vassiljev, A. V.; Zherebtsov, O. M.; Zimmer, O.

doi:10.1016/j.physletb.2008.04.014

Cited by 111 publications

(185 citation statements)

References 26 publications

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“…The emergent discussion for dark matter and dark energy triggered further use of UCNs to search for exotic physics beyond the Standard Model of particle physics, like searches for mirror matter [34][35][36], for Lorentz violation effects [37], for exotic interactions induced by axionlike particles [38][39][40][41][42], dark matter [43,44], or probing dark energy [45][46][47]. The sensitivities of all such UCN experiments depend directly on the total UCN statistics available in the measurement, hence on high UCN densities in sizeable storage vessels.…”

Section: Introductionmentioning

confidence: 99%

Comparison of ultracold neutron sources for fundamental physics measurements

et al. 2017

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Ultracold neutrons (UCNs) are key for precision studies of fundamental parameters of the neutron and in searches for new CP violating processes or exotic interactions beyond the Standard Model of particle physics. The most prominent example is the search for a permanent electric dipole moment of the neutron (nEDM). We have performed an experimental comparison of the leading UCN sources currently operating. We have used a 'standard' UCN storage bottle with a volume of 32 liters, comparable in size to nEDM experiments, which allows us to compare the UCN density available at a given beam port.

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Section: Introductionmentioning

confidence: 99%

Comparison of ultracold neutron sources for fundamental physics measurements

et al. 2017

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“…Shortly thereafter, an improved result of nn 0 > 414 s (90% C.L.) was reported [12] and further improved to nn 0 > 448 s (90% C.L.) [13].…”

Section: Introductionmentioning

confidence: 99%

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

Altarev¹,

Baker²,

Ban³

et al. 2009

Phys. Rev. D

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Article (Published Version) http://sro.sussex.ac.uk Alterev, I, Harris, Philip, Shiers, David and et al, (2009) Neutron to mirror-neutron oscillations in the presence of mirror magnetic fields. Physical Review D, 80 (3). 032003. ISSN 1550-7998 This version is available from Sussex Research Online: http://sro.sussex.ac.uk/16039/ This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way.Neutron to mirror-neutron oscillations in the presence of mirror magnetic fields We performed ultracold neutron storage measurements to search for additional losses due to neutron (n) to mirror-neutron (n 0 ) oscillations as a function of an applied magnetic field B. In the presence of a mirror magnetic field B 0 , ultracold neutron losses would be maximal for B % B 0 . We did not observe any indication for nn 0 oscillations and placed a lower limit on the oscillation time of nn 0 > 12:0sat 95% C.L. for any B 0 between 0 and 12:5 T.

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“…The best limits for nn oscillations stem from bound neutrons inside nuclei [25,26]. Present limits for nn and nn oscillations from free neutrons are from 1994 [27] respectively the late 2000s [28,29,30]. New experiments are proposed at the SNS [31], PNPI [32], and at the ESS [14,33].…”

Section: Fundamental Neutron Physicsmentioning

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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Experimental search for neutron–mirror neutron oscillations using storage of ultracold neutrons

Cited by 111 publications

References 26 publications

Comparison of ultracold neutron sources for fundamental physics measurements

Comparison of ultracold neutron sources for fundamental physics measurements

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

Cold and Ultra-cold Neutrons as Probes of New Physics

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