Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He

Lehnert, Ralf; Snow, W. M.; Xiao, Zhi; Xu, Rui

doi:10.1016/j.physletb.2017.07.059

Title: Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He

Abstract

General spacetime nonmetricity coupled to neutrons is studied. In this context, it is shown that certain nonmetricity components can generate a rotation of the neutron's spin. Available data on this effect obtained from slow-neutron propagation in liquid helium are then used to constrain isotropic nonmetricity components at the level of 10^-22GeV. These results represent the first limit on the nonmetricity ζ(⁶)₂S₀₀₀ parameter as well as the first measurement of nonmetricity inside matter.

Authors:: Lehnert, Ralf; Snow, W. M.; Xiao, Zhi; Xu, Rui

Publication Date:: Fri Sep 01 00:00:00 EDT 2017

Research Org.:: Indiana Univ., Bloomington, IN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); National Science Foundation of China; Chinese Scholarship Council

OSTI Identifier:: 1437718

Alternate Identifier(s):: OSTI ID: 1424584

Grant/Contract Number:: SC0010120; sc0010120; PHY-1614545; 11605056

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 772 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Lehnert, Ralf, Snow, W. M., Xiao, Zhi, and Xu, Rui. Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He.  Netherlands: N. p., 2017. 
Web.  doi:10.1016/j.physletb.2017.07.059.

Copy to clipboard


                    Lehnert, Ralf, Snow, W. M., Xiao, Zhi, & Xu, Rui. Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He.  Netherlands.  https://doi.org/10.1016/j.physletb.2017.07.059

Copy to clipboard


                    Lehnert, Ralf, Snow, W. M., Xiao, Zhi, and Xu, Rui. Fri .  
"Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He".  Netherlands.  https://doi.org/10.1016/j.physletb.2017.07.059.

Copy to clipboard


                    
@article{osti_1437718,

  title        = {Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He},

  author       = {Lehnert, Ralf and Snow, W. M. and Xiao, Zhi and Xu, Rui},

  abstractNote = {General spacetime nonmetricity coupled to neutrons is studied. In this context, it is shown that certain nonmetricity components can generate a rotation of the neutron's spin. Available data on this effect obtained from slow-neutron propagation in liquid helium are then used to constrain isotropic nonmetricity components at the level of 10-22GeV. These results represent the first limit on the nonmetricity ζ(6)2S000 parameter as well as the first measurement of nonmetricity inside matter.},

  doi          = {10.1016/j.physletb.2017.07.059},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 772,

  place        = {Netherlands},

  year         = {Fri Sep 01 00:00:00 EDT 2017},

  month        = {Fri Sep 01 00:00:00 EDT 2017}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2017.07.059

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 19 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referencing / citing this record:

Experimental upper bound and theoretical expectations for parity-violating neutron spin rotation in ${}^{4}{He}$
journal, July 2019

Swanson, H. E.; Heckel, B. R.; Bass, C. D.
Physical Review C, Vol. 100, Issue 1
DOI: 10.1103/physrevc.100.015204

Gauge field theories with Lorentz-violating operators of arbitrary dimension
journal, March 2019

Kostelecký, V. Alan; Li, Zonghao
Physical Review D, Vol. 99, Issue 5
DOI: 10.1103/physrevd.99.056016

Search for new physics with atoms and molecules
journal, June 2018

Safronova, M. S.; Budker, D.; DeMille, D.
Reviews of Modern Physics, Vol. 90, Issue 2
DOI: 10.1103/revmodphys.90.025008

Similar Records in DOE PAGES and OSTI.GOV collections:

Measurement of the absolute neutron beam polarization from a supermirror polarizer and the absolute efficiency of a neutron spin rotator for the NPDGamma experiment using a polarized ³He neutron spin-filter

Journal Article Musgrave, M. M. ; Baeßler, S. ; Balascuta, S. ; ... - Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

Accurately measuring the neutron beam polarization of a high flux, large area neutron beam is necessary for many neutron physics experiments. The Fundamental Neutron Physics Beamline (FnPB) at the Spallation Neutron Source (SNS) is a pulsed neutron beam that was polarized with a supermirror polarizer for the NPDGamma experiment. The polarized neutron beam had a flux of ~10⁹ neutrons per second per cm² and a cross sectional area of 10 x 12 cm². The polarization of this neutron beam and the efficiency of a RF neutron spin rotator installed downstream on this beam were measured by neutron transmission through amore »« less
Cited by 10
https://doi.org/10.1016/j.nima.2018.03.055

Full Text Available
Hamiltonian of a spinning test particle in curved spacetime

Journal Article Barausse, Enrico ; Racine, Etienne ; Buonanno, Alessandra - Physical Review. D, Particles Fields

Using a Legendre transformation, we compute the unconstrained Hamiltonian of a spinning test particle in a curved spacetime at linear order in the particle spin. The equations of motion of this unconstrained Hamiltonian coincide with the Mathisson-Papapetrou-Pirani equations. We then use the formalism of Dirac brackets to derive the constrained Hamiltonian and the corresponding phase space algebra in the Newton-Wigner spin supplementary condition, suitably generalized to curved spacetime, and find that the phase space algebra (q,p,S) is canonical at linear order in the particle spin. We provide explicit expressions for this Hamiltonian in a spherically symmetric spacetime, both in isotropicmore »« less
https://doi.org/10.1103/PHYSREVD.80.104025
First Direct Measurement Constraining the Ar 34 ( α , p ) K 37 Reaction Cross Section for Mixed Hydrogen and Helium Burning in Accreting Neutron Stars

Journal Article Browne, J. ; Chipps, K. A. ; Schmidt, Konrad ; ... - Physical Review Letters

The rate of the final step in the astrophysical αp process, the ³⁴Ar(α,p)³⁷K reaction, suffers from large uncertainties due to a lack of experimental data, despite having a considerable impact on the observable light curves of x-ray bursts and the composition of the ashes of hydrogen and helium burning on accreting neutron stars. Here, we present the first direct measurement constraining the 34Ar(α,p)37K reaction cross section, using the Jet Experiments in Nuclear Structure and Astrophysics gas jet target. The combined cross section for the ³⁴Ar,Cl(α,p)³⁷K,Ar reaction is found to agree well with Hauser-Feshbach predictions. The ³⁴Ar(α,2p)³⁶Ar cross section, which canmore »« less
https://doi.org/10.1103/physrevlett.130.212701
Proposed Measurement of the Parity-Violating Neutron Spin Rotation in 4He

Journal Article Micherdzinska, A M ; Bass, C D ; Dawkins, J M ; ... - AIP Conference Proceedings

Weak interactions between u and d quarks induce weak interactions between nucleons. These weak-interaction effects can be isolated from strong interactions using parity-violation (PV). The nucleon-nucleon (NN) weak interaction amplitudes are constrained by neither theory nor experiment. We describe a proposed measurement of PV neutron spin rotation in liquid helium {phi}PV(n,{alpha}) that is scheduled to run in 2006 with a sensitivity of 3x10-7 rad/m.
https://doi.org/10.1063/1.2220386
Dynamical attractors in contracting spacetimes dominated by kinetically coupled scalar fields

Journal Article Ijjas, Anna ; Pretorius, Frans ; Steinhardt, Paul J. ; ... - Journal of Cosmology and Astroparticle Physics

We present non-perturbative numerical relativity simulations of slowly contracting spacetimes in which the scalar field driving slow contraction is coupled to a second scalar field through an exponential non-linear σ model-type kinetic interaction. These models are important because they can generate a nearly scale-invariant spectrum of super-Hubble density fluctuations fully consistent with cosmic microwave background observations. We show that the non-linear evolution rapidly approaches a homogeneous, isotropic and flat Friedmann-Robertson-Walker (FRW) geometry for a wide range of inhomogeneous and anisotropic initial conditions. Ultimately, we find, the kinetic coupling causes the evolution to deflect away from flat FRW and towards amore »« less
https://doi.org/10.1088/1475-7516/2021/12/030

Full Text Available

Similar Records

Title: Constraining spacetime nonmetricity with neutron spin rotation in liquid 4He

Abstract

Citation Formats

Experimental upper bound and theoretical expectations for parity-violating neutron spin rotation in He 4 journal, July 2019

Gauge field theories with Lorentz-violating operators of arbitrary dimension journal, March 2019

Search for new physics with atoms and molecules journal, June 2018

Experimental upper bound and theoretical expectations for parity-violating neutron spin rotation in ${}^{4}{He}$
journal, July 2019

Gauge field theories with Lorentz-violating operators of arbitrary dimension
journal, March 2019

Search for new physics with atoms and molecules
journal, June 2018