Limits on New Long Range Nuclear Spin-Dependent Forces Set with a K-{sup 3}He Comagnetometer

Journal Article · Thu Dec 31 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.261801· OSTI ID:21370923

Vasilakis, G; Brown, J M; Kornack, T W; Romalis, M V ^[1]

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1. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)

A magnetometer using spin-polarized K and {sup 3}He atoms occupying the same volume is used to search for anomalous nuclear spin-dependent forces generated by a separate {sup 3}He spin source. We measure changes in the {sup 3}He spin precession frequency with a resolution of 18 pHz and constrain anomalous spin forces between neutrons to be less than 2x10{sup -8} of their magnetic or less than 2x10{sup -3} of their gravitational interactions on a length scale of 50 cm. We present new limits on neutron coupling to light pseudoscalar and vector particles, including torsion, and constraints on recently proposed models involving unparticles and spontaneous breaking of Lorentz symmetry.

• OSTI ID: 21370923
• Journal Information: Physical Review Letters, Vol. 103, Issue 26; Other Information: DOI: 10.1103/PhysRevLett.103.261801; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ATOMS
GRAVITATIONAL INTERACTIONS
HELIUM 3
MAGNETOMETERS
NEUTRONS
RESOLUTION
SPIN
SPIN ORIENTATION
SYMMETRY
TORSION
VECTORS
ANGULAR MOMENTUM
BARYONS
BASIC INTERACTIONS
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HELIUM ISOTOPES
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
NUCLEI
NUCLEONS
ORIENTATION
PARTICLE PROPERTIES
STABLE ISOTOPES
TENSORS