Measurement of the Positive Muon Anomalous Magnetic Moment to 127 ppb

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

doi:10.1103/7clf-sm2v

A new measurement of the magnetic anomaly aμ 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 the total statistics of our previous results. From the ratio of the precession frequencies for muons and protons in our storage ring magnetic field, together with precisely known ratios of fundamental constants, we determine aμ=1 165 920 710(162)×10-12 (139 ppb) for the new datasets, and aμ=1 165 920 705(148)×10-12 (127 ppb) when combined with our previous results. The new experimental world average, dominated by the measurements at FNAL, is aμ(exp)=1 165 920 715(145)×10-12 (124 ppb). The measurements at FNAL have improved the precision on the world average by over a factor of 4.

Measurement of the Positive Muon Anomalous Magnetic Moment to 127 ppb

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

2025

Abstract

A new measurement of the magnetic anomaly aμ 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 the total statistics of our previous results. From the ratio of the precession frequencies for muons and protons in our storage ring magnetic field, together with precisely known ratios of fundamental constants, we determine aμ=1 165 920 710(162)×10-12 (139 ppb) for the new datasets, and aμ=1 165 920 705(148)×10-12 (127 ppb) when combined with our previous results. The new experimental world average, dominated by the measurements at FNAL, is aμ(exp)=1 165 920 715(145)×10-12 (124 ppb). The measurements at FNAL have improved the precision on the world average by over a factor of 4.

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Scheda completa

Scheda completa (DC)

	Anno di pubblicazione
	
				2025
			
	Settore Scientifico Disciplinare (validi fino a 24/06/2024)
	
				Settore FIS/01 - Fisica Sperimentale
			
	Settore Scientifico Disciplinare (validi dal 09/05/2024)
	
				Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
			
	Titolo Rivista
	
				PHYSICAL REVIEW LETTERS
			
	DOI
	
				https://dx.doi.org/10.1103/7clf-sm2v
			
	Parole chiave
	
				Muon anomalous magnetic moment; precision-measurement; electron; digital storage; magnetic storage; nuclear instrumentation; storage rings
			
	Progetti che finanziano la ricerca
	
	Titolo Progetto
	
									advanced Muon Campus in US and Europe contribution
								
	Acronimo
	
									aMUSE
								
	Nome finanziatore
	
										European Commission
									
	Finanziamento
	
									Horizon 2020 Framework Programme - RISE
								
	N. Contratto
	
									101006726
								
	Titolo Progetto
	
									NEw WindowS on the universe and technological advancements from trilateral EU-US-Japan collaboration
								
	Acronimo
	
									NEWS
								
	Nome finanziatore
	
										European Commission
									
	Finanziamento
	
									Horizon 2020 Framework Programme - RISE
								
	N. Contratto
	
									734303
								
	Titolo Progetto
	
									The strong interaction at the frontier of knowledge: fundamental research and applications
								
	Acronimo
	
									STRONG-2020
								
	Nome finanziatore
	
										European Commission
									
	Finanziamento
	
									Horizon 2020 Framework Programme - Research and Innovation action
								
	N. Contratto
	
									824093
								
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