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The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 at the Brookhaven National Laboratory AGS. The E821 result appears to be greater than the…

Instrumentation and Detectors · Physics 2018-05-15 J. Grange , V. Guarino , P. Winter , K. Wood , H. Zhao , R. M. Carey , D. Gastler , E. Hazen , N. Kinnaird , J. P. Miller , J. Mott , B. L. Roberts , J. Benante , J. Crnkovic , W. M. Morse , H. Sayed , V. Tishchenko , V. P. Druzhinin , B. I. Khazin , I. A. Koop , I. Logashenko , Y. M. Shatunov , E. Solodov , M. Korostelev , D. Newton , A. Wolski , A. Chapelain , R. Bjorkquist , N. Eggert , A. Frankenthal , L. Gibbons , S. Kim , A. Mikhailichenko , Y. Orlov , D. Rubin , D. Sweigart , D. Allspach , G. Annala , E. Barzi , K. Bourland , G. Brown , B. C. K. Casey , S. Chappa , M. E. Convery , B. Drendel , H. Friedsam , T. Gadfort , K. Hardin , S. Hawke , S. Hayes , W. Jaskierny , C. Johnstone , J. Johnstone , V. Kashikhin , C. Kendziora , B. Kiburg , A. Klebaner , I. Kourbanis , J. Kyle , N. Larson , A. Leveling , A. L. Lyon , D. Markley , D. McArthur , K. W. Merritt , N. Mokhov , J. P. Morgan , H. Nguyen , J-F. Ostiguy , A. Para , C. C. Polly M. Popovic , E. Ramberg , M. Rominsky , D. Schoo , R. Schultz , D. Still , A. K. Soha , S. Strigonov , G. Tassotto , D. Turrioni , E. Villegas , E. Voirin , G. Velev , L. Welty-Rieger , D. Wolff , C. Worel , J-Y. Wu , R. Zifko , K. Jungmann , C. J. G. Onderwater , P. T. Debevec , S. Ganguly , M. Kasten , S. Leo , K. Pitts , C. Schlesier , M. Gaisser , S. Haciomeroglu , Y-I. Kim , S. Lee , M-J Lee , Y. K. Semertzidis , K. Giovanetti , V. A. Baranov , V. N. Duginov , N. V. Khomutov , V. A. Krylov , N. A. Kuchinskiy , V. P. Volnykh , C. Crawford , R. Fatemi , W. P. Gohn , T. P. Gorringe , W. Korsch , B. Plaster , A. Anastasi , D. Babusci , S. Dabagov , C. Ferrari , A. Fioretti , C. Gabbanini , D. Hampai , A. Palladino , G. Venanzoni , T. Bowcock , J. Carroll , B. King , S. Maxfield , K. McCormick , J. Price , D. Sim , A. Smith , T. Teubner , W. Turner , M. Whitley , M. Wormald , R. Chislett , S. Kilani , M. Lancaster , E. Motuk , T. Stuttard , M. Warren , D. Flay , D. Kawall , Z. Meadows , T. Chupp , R. Raymond , A. Tewlsey-Booth , M. J. Syphers , D. Tarazona , S. Catalonotti , R. Di Stefano , M. Iacovacci , S. Mastroianni , S. Chattopadhyay , M. Eads , M. Fortner , D. Hedin , N. Pohlman , A. de Gouvea , H. Schellman , L. Welty-Rieger , F. Azfar , S. Henry , G. D. Alkhazov , V. L. Golovtsov , P. V. Neustroev , L. N. Uvarov , A. A. Vasilyev , A. A. Vorobyov , M. B. Zhalov , L. Cerrito , F. Gray , G. Di Sciascio , D. Moricciani , C. Fu , X. Ji , L. Li , H. Yang , D. Stöckinger , G. Cantatore , D. Cauz , M. Karuza , G. Pauletta , L. Santi , S. Baeßler , M. Bychkov , E. Frlez , D. Pocanic , L. P. Alonzi , M. Fertl , A. Fienberg , N. Froemming , A. Garcia , D. W. Hertzog J. Kaspar , P. Kammel , R. Osofsky , M. Smith , E. Swanson , T. van Wechel , K. Lynch

The upcoming muon (g-2) experiment at Fermilab will measure the anomalous magnetic moment of the muon to a relative precision of 140 ppb, 4 times better than the previous experiment at BNL. The new experiment is motivated by the persistent…

Instrumentation and Detectors · Physics 2015-04-07 J. Kaspar

In this study, we investigate the anomalous magnetic moment of the muon $(g_\mu-2)$ as reported by Fermilab (FNAL), along with the recent measurement of the $W$-boson mass by the CDF-II collaboration. Both findings show significant…

High Energy Physics - Phenomenology · Physics 2024-01-05 Rachid Benbrik , Mohammed Boukidi , Bouzid Manaut

The muon magnetic anomaly, $a_{\mu}=(g_{\mu}-2)/2$, plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of this fundamental quantity provide a stringent test of the SM and a window to the…

High Energy Physics - Experiment · Physics 2025-06-17 Alex Keshavarzi , Kim Siang Khaw , Tamaki Yoshioka

The effect of the recently observed 2.6 sigma deviation of the muon anomalous magnetic moment (a_mu = (g_mu -2)/2) from its Standard Model prediction is examined within the framework of supergravity models with grand unification and R…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. Arnowitt , B. Dutta , B. Hu , Y. Santoso

The recent measurement of the muon $g - 2$ anomaly continues to defy a Standard Model explanation, but can be accommodated within the framework of two Higgs doublet models. If one further includes extra fermion content in the form of a…

High Energy Physics - Phenomenology · Physics 2021-09-29 P. M. Ferreira , B. L. Gonçalves , F. R. Joaquim , Marc Sher

The Fermilab Muon $g-2$ experiment recently reported its first measurement of the anomalous magnetic moment $a_\mu^{\textrm{FNAL}}$, which is in full agreement with the previous BNL measurement and pushes the world average deviation $\Delta…

High Energy Physics - Phenomenology · Physics 2021-10-11 Peter Athron , Csaba Balázs , Douglas HJ Jacob , Wojciech Kotlarski , Dominik Stöckinger , Hyejung Stöckinger-Kim

The recent measurement of the muon anomalous magnetic moment a_\mu\equiv (g-2)_\mu/2 by the Fermilab Muon g-2 experiment sharpens an earlier discrepancy between theory and the BNL E821 experiment. We examine the predicted \Delta a_\mu\equiv…

High Energy Physics - Phenomenology · Physics 2021-07-07 Howard Baer , Vernon Barger , Hasan Serce

The long-standing muon $g-2$ anomaly has been confirmed recently at the Fermilab. The combined discrepancy from Fermilab and Brookhaven results shows a difference from the theory at a significance of 4.2 $\sigma$. In addition, the LHC has…

High Energy Physics - Phenomenology · Physics 2021-06-04 Wen Yin

The current $\sim3.5\sigma$ discrepancy between the experimental measurement and theoretical prediction of the muon magnetic anomaly, $a_{\mu}$, stands as a potential indication of the existence of new physics. The Muon $g-2$ experiment at…

High Energy Physics - Experiment · Physics 2019-07-24 Alexander Keshavarzi

The Fermilab Muon $g-2$ collaboration recently announced the first result of measurement of the muon anomalous magnetic moment ($g-2$), which confirmed the previous result at the Brookhaven National Laboratory and thus the discrepancy with…

High Energy Physics - Phenomenology · Physics 2021-07-14 Motoi Endo , Koichi Hamaguchi , Sho Iwamoto , Teppei Kitahara

We show that a unified framework based on an $SU(2)_H$ horizontal symmetry which generates a naturally large neutrino transition magnetic moment and explains the XENON1T electron recoil excess also predicts a positive shift in the muon…

High Energy Physics - Phenomenology · Physics 2022-01-11 K. S. Babu , Sudip Jana , Manfred Lindner , Vishnu P. K

We study the Two-Higgs-Doublet Model with the aligned Yukawa sector (A2HDM) in light of the observed excess measured in the muon anomalous magnetic moment. We take into account the existing theoretical and experimental constraints with…

High Energy Physics - Phenomenology · Physics 2016-03-23 Tao Han , Sin Kyu Kang , Joshua Sayre

The Muon g-2 experiment at Fermilab seeks to measure the muon magnetic moment anomaly, $a_\mu =(g-2)/2$, with a final target precision of 0.14 parts-per-million (ppm). The experiment's initial result, published in 2021 using Run 1 data from…

High Energy Physics - Experiment · Physics 2025-06-27 Estifa'a Zaid

This paper will cover the physics and methods behind Fermilab's Muon g-2 Experiment, along with the long-awaited results from Run-1. The experiment was undertaken to resolve the tension between the Standard Model and the previous…

High Energy Physics - Experiment · Physics 2022-02-24 Alexander Tewsley-Booth

The new measurement of the anomalous magnetic moment of muon at the Fermilab Muon $g-2$ experiment has strengthened the significance of the discrepancy between the standard model prediction and the experimental observation from the BNL…

High Energy Physics - Phenomenology · Physics 2021-10-11 Kwang Sik Jeong , Junichiro Kawamura , Chan Beom Park

The muon anomalous magnetic moment measurement has, for more than a decade, been a long-standing anomaly hinting the physics beyond the Standard Model (BSM). The recently announced results from muon $g-2$ collaboration, corresponding to…

High Energy Physics - Phenomenology · Physics 2021-07-29 Vedran Brdar , Sudip Jana , Jisuke Kubo , Manfred Lindner

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 upcoming Fermilab E989 experiment will measure the muon anomalous magnetic moment $a_{\mu}$ . This measurement is motivated by the previous measurement performed in 2001 by the BNL E821 experiment that reported a 3-4 standard deviation…

Instrumentation and Detectors · Physics 2017-04-05 Antoine Chapelain

In this note, we show how one can attribute the anomaly currently present in the measurement of the anomalous magnetic moment of the muon ($a_\mu$) to the presence of an underlying Aligned 2-Higgs Doublet Model (A2HDM) with Right-Handed…

High Energy Physics - Phenomenology · Physics 2022-01-25 Luigi Delle Rose , Shaaban Khalil , Stefano Moretti