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Gravitational Depolarization of Ultracold Neutrons: Comparison with Data

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arxiv 1506.06563 v3 pith:I65JKVVY submitted 2015-06-22 physics.ins-det hep-ex

Gravitational Depolarization of Ultracold Neutrons: Comparison with Data

S. Afach , N.J. Ayres , C.A. Baker , G. Ban , G. Bison , K. Bodek , M. Fertl , B. Franke
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P. Geltenbort K. Green W.C. Griffith M. van der Grinten Z.D. Grujic P.G. Harris W. Heil V. Helaine P. Iaydjiev S.N. Ivanov M. Kasprzak Y. Kermaidic K. Kirch H.-C. Koch S. Komposch A. Kozela J. Krempel B. Lauss T. Lefort Y. Lemiere M. Musgrave O. Naviliat-Cunic J.M. Pendlebury F.M. Piegsa G. Pignol C. Plonka-Spehr P.N. Prashanth G. Quemener M. Rawlik D. Rebreyend D. Ries S. Roccia D. Rozpedzik P. Schmidt-Wellenburg N. Severijns D. Shiers J.A. Thorne A. Weis E. Wursten J. Zejma J. Zenner G. Zsigmond
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classification physics.ins-det hep-ex
keywords depolarizationdataenhancedgradientsgravitationallyneutronsultracoldaccounting
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We compare the expected effects of so-called gravitationally enhanced depolarization of ultracold neutrons to measurements carried out in a spin-precession chamber exposed to a variety of vertical magnetic-field gradients. In particular, we have investigated the dependence upon these field gradients of spin depolarization rates and also of shifts in the measured neutron Larmor precession frequency. We find excellent qualitative agreement, with gravitationally enhanced depolarization accounting for several previously unexplained features in the data.

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