Standard model radiative corrections in the pion form factor measurements do not explain the a(mu) anomaly
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F19%3A50016097" target="_blank" >RIV/62690094:18470/19:50016097 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prd/pdf/10.1103/PhysRevD.100.076004" target="_blank" >https://journals.aps.org/prd/pdf/10.1103/PhysRevD.100.076004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.100.076004" target="_blank" >10.1103/PhysRevD.100.076004</a>
Alternative languages
Result language
angličtina
Original language name
Standard model radiative corrections in the pion form factor measurements do not explain the a(mu) anomaly
Original language description
In this paper, we address the question of whether the almost four standard deviations difference between theory and experiment for the muon anomalous magnetic moment a(mu) can be explained as a higher-order Standard Model perturbation effect in the pion form factor measurements. This question has, until now, remained open, obscuring the source of discrepancies between the measurements. We calculate the last radiative corrections for the extraction of the pion form factor, which were believed to be potentially substantial enough to explain the data within the Standard Model. We find that the corrections are too small to diminish existing discrepancies in the determination of the pion form factor for different kinematical configurations of low-energy BABAR, BES-III and KLOE experiments. Consequently, they cannot noticeably change the previous predictions for a(mu) and decrease the deviations between theory and direct measurements. To solve the above issues, new data and better understanding of low-energy experimental setups are needed, especially as new direct a(mu) measurements at Fermilab and J-PARC will provide new insights and substantially shrink the experimental error.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICAL REVIEW D
ISSN
2470-0010
e-ISSN
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Volume of the periodical
100
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
"Article Number: 076004"
UT code for WoS article
000489577800008
EID of the result in the Scopus database
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