Measurement of the anomalous precession frequency of the muon in the Fermilab Muon g2 Experiment

T. Albahri (University of Liverpool, Liverpool, United Kingdom) ; A. Anastasi (INFN, Sezione di Pisa, Pisa, Italy) ; A. Anisenkov (Budker Institute of Nuclear Physics, Novosibirsk, Russia) ; K. Badgley (Fermi National Accelerator Laboratory, Batavia, Illinois, USA) ; S. Baeßler (University of Virginia, Charlottesville, Virginia, USA) ; et al. - Show all 178 authors

The Muon g2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency ωam to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run in 2018. When combined with a precision measurement of the magnetic field of the experiment’s muon storage ring, the precession frequency measurement determines a muon magnetic anomaly of aμ(FNAL)=116 592 040(54)×1011 (0.46 ppm). This article describes the multiple techniques employed in the reconstruction, analysis, and fitting of the data to measure the precession frequency. It also presents the averaging of the results from the 11 separate determinations of ωam, and the systematic uncertainties on the result.

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  "titles": [
    {
      "source": "APS", 
      "title": "Measurement of the anomalous precession frequency of the muon in the Fermilab Muon <math><mi>g</mi><mo>\u2212</mo><mn>2</mn></math> Experiment"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevD.103.072002"
    }
  ], 
  "publication_info": [
    {
      "journal_volume": "103", 
      "journal_title": "Physical Review D", 
      "material": "article", 
      "journal_issue": "7", 
      "year": 2021
    }
  ], 
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  "acquisition_source": {
    "date": "2022-04-05T09:17:30.698782", 
    "source": "APS", 
    "method": "APS", 
    "submission_number": "2cf5978cb4c111ec837fd6d834be26e1"
  }, 
  "page_nr": [
    29
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses/by/4.0/", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "statement": "Published by the American Physical Society", 
      "year": "2021"
    }
  ], 
  "control_number": "61215", 
  "collaborations": [
    {
      "value": "Muon <math xmlns=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><mi>g</mi><mo>\u2212</mo><mn>2</mn></math> Collaboration"
    }
  ], 
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    {
      "categories": [
        "hep-ex", 
        "nucl-ex"
      ], 
      "value": "2104.03247"
    }
  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "The Muon <math><mi>g</mi><mo>\u2212</mo><mn>2</mn></math> Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency <math><msubsup><mi>\u03c9</mi><mi>a</mi><mi>m</mi></msubsup></math> to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run in 2018. When combined with a precision measurement of the magnetic field of the experiment\u2019s muon storage ring, the precession frequency measurement determines a muon magnetic anomaly of <math><mrow><msub><mrow><mi>a</mi></mrow><mrow><mi>\u03bc</mi></mrow></msub><mo>(</mo><mrow><mi>FNAL</mi></mrow><mo>)</mo><mo>=</mo><mn>116</mn><mi> </mi><mn>592</mn><mi> </mi><mn>040</mn><mo>(</mo><mn>54</mn><mo>)</mo><mo>\u00d7</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>\u2212</mo><mn>11</mn></mrow></msup></mrow></math> (0.46 ppm). This article describes the multiple techniques employed in the reconstruction, analysis, and fitting of the data to measure the precession frequency. It also presents the averaging of the results from the 11 separate determinations of <math><msubsup><mi>\u03c9</mi><mi>a</mi><mi>m</mi></msubsup></math>, and the systematic uncertainties on the result."
    }
  ], 
  "imprints": [
    {
      "date": "2021-04-07", 
      "publisher": "APS"
    }
  ]
}
Published on:
07 April 2021
Publisher:
APS
Published in:
Physical Review D , Volume 103 (2021)
Issue 7
DOI:
https://doi.org/10.1103/PhysRevD.103.072002
arXiv:
2104.03247
Copyrights:
Published by the American Physical Society
Licence:
CC-BY-4.0

Fulltext files: