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A new measurement of the magnetic anomaly $a_{\mu}$ of the positive muon is presented based on data taken from 2020 to 2023 by the Muon $g-2$ Experiment at Fermi National Accelerator Laboratory (FNAL). This dataset contains over 2.5 times…

High Energy Physics - Experiment · Physics 2025-06-04 The Muon $g-2$ Collaboration , : , D. P. Aguillard , T. Albahri , D. Allspach , J. Annala , K. Badgley , S. Baeßler , I. Bailey , L. Bailey , E. Barlas-Yucel , T. Barrett , E. Barzi , F. Bedeschi , M. Berz , M. Bhattacharya , H. P. Binney , P. Bloom , J. Bono , E. Bottalico , T. Bowcock , S. Braun , M. Bressler , G. Cantatore , R. M. Carey , B. C. K. Casey , D. Cauz , R. Chakraborty , A. Chapelain , S. Chappa , S. Charity , C. Chen , M. Cheng , R. Chislett , Z. Chu , T. E. Chupp , C. Claessens , F. Confortini , M. E. Convery , S. Corrodi , L. Cotrozzi , J. D. Crnkovic , S. Dabagov , P. T. Debevec , S. Di Falco , G. Di Sciascio , S. Donati , B. Drendel , A. Driutti , M. Eads , A. Edmonds , J. Esquivel , M. Farooq , R. Fatemi , K. Ferraby , C. Ferrari , M. Fertl , A. T. Fienberg , A. Fioretti , D. Flay , S. B. Foster , H. Friedsam , N. S. Froemming , C. Gabbanini , I. Gaines , S. Ganguly , J. George , L. K. Gibbons , A. Gioiosa , K. L. Giovanetti , P. Girotti , W. Gohn , L. Goodenough , T. Gorringe , J. Grange , S. Grant , F. Gray , S. Haciomeroglu , T. Halewood-Leagas , D. Hampai , F. Han , J. Hempstead , D. W. Hertzog , G. Hesketh , E. Hess , A. Hibbert , Z. Hodge , S. Y. Hoh , K. W. Hong , R. Hong , T. Hu , Y. Hu , M. Iacovacci , M. Incagli , S. Israel , P. Kammel , M. Kargiantoulakis , M. Karuza , J. Kaspar , D. Kawall , L. Kelton , A. Keshavarzi , D. S. Kessler , K. S. Khaw , Z. Khechadoorian , B. Kiburg , M. Kiburg , O. Kim , N. Kinnaird , E. Kraegeloh , J. LaBounty , K. R. Labe , M. Lancaster , S. Lee , B. Li , D. Li , L. Li , I. Logashenko , A. Lorente Campos , Z. Lu , A. Lucà , G. Lukicov , A. Lusiani , A. L. Lyon , B. MacCoy , R. Madrak , K. Makino , S. Mastroianni , R. McCarthy , J. P. Miller , S. Miozzi , B. Mitra , J. P. Morgan , W. M. Morse , J. Mott , A. Nath , J. K. Ng , H. Nguyen , Y. Oksuzian , Z. Omarov , W. Osar , R. Osofsky , S. Park , G. Pauletta , J. Peck , G. M. Piacentino , R. N. Pilato , K. T. Pitts , B. Plaster , N. Pohlman , C. C. Polly , D. Počanić , J. Price , B. Quinn , M. U. H. Qureshi , G. Rakness , S. Ramachandran , E. Ramberg , R. Reimann , B. L. Roberts , D. L. Rubin , M. Sakurai , L. Santi , C. Schlesier , A. Schreckenberger , Y. K. Semertzidis , M. Sorbara , J. Stapleton , D. Still , C. Stoughton , D. Stratakis , D. Stöckinger , H. E. Swanson , G. Sweetmore , D. A. Sweigart , M. J. Syphers , Y. Takeuchi , D. A. Tarazona , T. Teubner , A. E. Tewsley-Booth , V. Tishchenko , N. H. Tran , W. Turner , E. Valetov , D. Vasilkova , G. Venanzoni , T. Walton , A. Weisskopf , L. Welty-Rieger , P. Winter , Y. Wu , B. Yu , M. Yucel , E. Zaid , Y. Zeng , C. Zhang

The Muon $g\textrm{-}2$ Experiment (E989) at Fermilab has a goal of measuring the muon anomaly ($a_\mu$) with unprecedented precision using positive muons. This measurement is motivated by the difference between the previous Brookhaven…

Accelerator Physics · Physics 2020-09-25 Eremey Valetov

The muon magnetic anomaly, $a_{\mu}$, is a powerful test of the Standard Model of particle physics. A new experiment at Fermilab has recently measured $a_{\mu}$ with unprecedented precision, confirming the results of the earlier Brookhaven…

High Energy Physics - Experiment · Physics 2022-05-16 K. R. Labe

The Muon g-2/EDM Experiment at J-PARC will employ a novel way to measure the muon magnetic anomaly, a_mu = (g-2)_mu/2, by using a low-emittance beam of positive muons stored in a compact muon storage magnet. The experimental method includes…

High Energy Physics - Experiment · Physics 2025-12-24 Graziano Venanzoni

We study the muon anomalous magnetic moment $(g-2)_{\mu}$ in the context of the reduced minimal 3-3-1 model recently proposed in the literature. In particular, its spectrum contains a doubly charged scalar ($H^{\pm \pm}$) and gauge boson…

High Energy Physics - Phenomenology · Physics 2014-06-20 Chris Kelso , P. R. D. Pinheiro , Farinaldo S. Queiroz , William Shepherd

The recently published result from the Fermilab "MUON G-2" experiment has confirmed the persistent 3-4 $\sigma$ discrepancy between the experimental result from BNL for the anomalous magnetic moment of the muon, $(g-2)_\mu$ , and its…

High Energy Physics - Phenomenology · Physics 2021-11-02 Manimala Chakraborti , Sven Heinemeyer , Ipsita Saha

The muon (g-2) experiment at Brookhaven National Laboratory has measured the anomalous magnetic moment of the positive muon with a precision of 0.7 ppm. This paper presents that result, concentrating on some of the important experimental…

High Energy Physics - Experiment · Physics 2007-05-23 F. E. Gray

Anomalous magnetic moment of the muon, $a_{\mu}=(g_{\mu}-2)/2$, is one of the most precisely measured quantities in particle physics and it provides a stringent test of the Standard Model. The planned improvements of the experimental…

High Energy Physics - Lattice · Physics 2017-04-24 Marina Krstic Marinkovic

The muon anomalous magnetic moment is one of the most precisely measured quantities in particle physics. In a recent experiment at Brookhaven it has been measured with a remarkable 14-fold improvement of the previous CERN experiment…

High Energy Physics - Phenomenology · Physics 2015-05-13 Fred Jegerlehner , Andreas Nyffeler

This paper introduces a new approach to measure the muon magnetic moment anomaly $a_{\mu} = (g-2)/2$, and the muon electric dipole moment (EDM) $d_{\mu}$ at the J-PARC muon facility. The goal of our experiment is to measure $a_{\mu}$ and…

The magnetic moment anomaly a_mu = (g_mu - 2) / 2 of the positive muon has been measured at the Brookhaven Alternating Gradient Synchrotron with an uncertainty of 0.7 ppm. The new result, based on data taken in 2000, agrees well with…

High Energy Physics - Experiment · Physics 2009-11-07 M. Deile

Starting this summer, Fermilab will host a key experiment dedicated to the search for signals of new physics: The Fermilab Muon g-2 Experiment. Its aim is to precisely measure the anomalous magnetic moment of the muon. In full operation, in…

The new measurement of the muon's anomalous magnetic moment released by the Muon g-2 experiment at Fermilab sets strong constraints on the properties of many new particles. Using an effective field theory approach to the interactions of…

High Energy Physics - Phenomenology · Physics 2021-07-07 Juan C. Criado , Abdelhak Djouadi , Niko Koivunen , Kristjan Müürsepp , Martti Raidal , Hardi Veermäe

The $\mu\nu$SSM is a highly predictive alternative model to the MSSM. In particular, the electroweak sector of the model can explain the longstanding discrepancy between the experimental result for the anomalous magnetic moment of the muon,…

High Energy Physics - Phenomenology · Physics 2021-09-29 Sven Heinemeyer , Essodjolo Kpatcha , Iñaki Lara , Daniel E. López-Fogliani , Carlos Muñoz , Natsumi Nagata

We review the role of the anomalous magnetic moment of the muon a_\mu as a powerful probe of physics beyond the Standard Model (BSM), taking advantage of the final result of the Fermilab g-2 experiment and the recently updated Standard…

High Energy Physics - Phenomenology · Physics 2026-02-27 Peter Athron , Kilian Möhling , Dominik Stöckinger , Hyejung Stöckinger-Kim

The anomalous magnetic moment of the muon has been measured to 0.5 ppm in a series of precision experiments at the Brookhaven Alternating Gradient Synchrotron. The individual results for each sign: a(mu+)= 11 659 204(7)(5) E-10 and a(mu-) =…

High Energy Physics - Phenomenology · Physics 2007-05-23 Priscilla Cushman

The Fermi National Accelerator Laboratory (FNAL) Muon $g-2$ Experiment has measured the positive muon magnetic anomaly $a_{\mu} \equiv (g_{\mu}-2)/2$ with a precision of 0.46 parts per million, with data collected during its first physics…

High Energy Physics - Experiment · Physics 2022-03-07 Alessandra Lucà

Anomalous magnetic moment of the muon (muon g-2) is one of the most precisely measured quantities in particle physics. At the same time, it can be evaluated in the Standard Model with an unprecedented accuracy. The Muon g-2 experiment at…

High Energy Physics - Lattice · Physics 2021-02-03 Marina Krstic Marinkovic , Nuno Cardoso

Since its discovery, the muon has proven to be an invaluable probe of the Standard Model (SM). Muons are readily available in tertiary beams in facilities around the world. They do not decay hadronically and have a lifetime of a few $\mu$…

High Energy Physics - Experiment · Physics 2025-02-04 Sophie Middleton

The new experiment data of muon g-2 is reported by the workers at Fermilab National Accelerator Laboratory(FNAL). Combined with the previous Brookhaven National Laboratory(BNL) E821 result, the departure from the standard model prediction…

High Energy Physics - Phenomenology · Physics 2022-04-13 Shu-Min Zhao , Lu-Hao Su , Xing-Xing Dong , Tong-Tong Wang , Tai-Fu Feng