Gravitational effects on measurements of the muon dipole moments

Kobach, Andrew

doi:10.1016/j.nuclphysb.2016.08.011

Title: Gravitational effects on measurements of the muon dipole moments

Abstract

If one day the technology for muon storage rings permits sensitivity to precession at the order of 10^-8Hz, the local gravitational field of Earth can be a dominant contribution to the precession of the muon, which, if ignored, can fake the signal for a nonzero muon electric dipole moment (EDM). Specifically, the effects of Earth’s gravity on the motion of a muon’s spin is indistinguishable from it having a nonzero EDM of magnitude d_μ~10^-29e cm in a storage ring with vertical magnetic field of -1T, which is significantly larger than the expected upper limit in the Standard Model, d_μ ≲10^-36e cm. As a corollary, measurements of Earth’s local gravitational field using stored muons would be a unique test to distinguish classical gravity from general relativity with a bonafide quantum mechanical entity, i.e., an elementary particle’s spin.

Authors:

^[1]

Univ. of California San Diego, La Jolla, CA (United States). Physics Dept.

Publication Date:: 2016-10-01

Research Org.:: Univ. of California, San Diego, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1294705

Alternate Identifier(s):: OSTI ID: 1423954

Grant/Contract Number:: SC0009919

Resource Type:: Published Article

Journal Name:: Nuclear Physics. B

Additional Journal Information:: Journal Name: Nuclear Physics. B Journal Volume: 911 Journal Issue: C; Journal ID: ISSN 0550-3213

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Kobach, Andrew. Gravitational effects on measurements of the muon dipole moments.  Netherlands: N. p., 2016. 
Web.  doi:10.1016/j.nuclphysb.2016.08.011.

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                    Kobach, Andrew. Gravitational effects on measurements of the muon dipole moments.  Netherlands.  https://doi.org/10.1016/j.nuclphysb.2016.08.011

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                    Kobach, Andrew. Sat .  
"Gravitational effects on measurements of the muon dipole moments".  Netherlands.  https://doi.org/10.1016/j.nuclphysb.2016.08.011.

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@article{osti_1294705,

  title        = {Gravitational effects on measurements of the muon dipole moments},

  author       = {Kobach, Andrew},

  abstractNote = {If one day the technology for muon storage rings permits sensitivity to precession at the order of 10-8Hz, the local gravitational field of Earth can be a dominant contribution to the precession of the muon, which, if ignored, can fake the signal for a nonzero muon electric dipole moment (EDM). Specifically, the effects of Earth’s gravity on the motion of a muon’s spin is indistinguishable from it having a nonzero EDM of magnitude dμ~10-29e cm in a storage ring with vertical magnetic field of -1T, which is significantly larger than the expected upper limit in the Standard Model, dμ ≲10-36e cm. As a corollary, measurements of Earth’s local gravitational field using stored muons would be a unique test to distinguish classical gravity from general relativity with a bonafide quantum mechanical entity, i.e., an elementary particle’s spin.},

  doi          = {10.1016/j.nuclphysb.2016.08.011},

  journal      = {Nuclear Physics. B},

  number       = C,

  volume       = 911,

  place        = {Netherlands},

  year         = {2016},

  month        = {10}

}

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Works referencing / citing this record:

Nuclear electric dipole moment in the cluster model with a triton: ${}^{7}{Li}$ and ${}^{11}B$
journal, November 2019

Yamanaka, Nodoka; Yamada, Taiichi; Funaki, Yasuro
Physical Review C, Vol. 100, Issue 5
DOI: 10.1103/physrevc.100.055501

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journal, November 2019