Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

Published: 2021-04-07
Venue: Physical Review Letters, vol. 126, no. 14
Cited by: 1,271
Open access: Yes, hybrid
DOI: 10.1103/physrevlett.126.141801

Abstract

We present the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g -2 Experiment for the positive muon magnetic anomaly a μ ≡ ðg μ -2Þ=2.The anomaly is determined from the precision measurements of two angular frequencies.Intensity variation of high-energy positrons from muon decays directly encodes the difference frequency ω a between the spin-precession and cyclotron frequencies for polarized muons in a magnetic storage ring.The storage ring magnetic field is measured using nuclear magnetic resonance probes calibrated in terms of the equivalent proton spin precession frequency ω0 p in a spherical water sample at 34.7 °C.The ratio ω a = ω0 p , together with known fundamental constants, determines a μ ðFNALÞ ¼ 116 592 040ð54Þ × 10 -11 (0.46 ppm).The result is 3.3 standard deviations greater than the standard model prediction and is in excellent agreement with the previous Brookhaven National Laboratory (BNL) E821 measurement.After combination with previous measurements of both μ þ and μ -, the new experimental average of a μ ðExpÞ ¼ 116 592 061ð41Þ × 10 -11 (0.35 ppm) increases the tension between experiment and theory to 4.2 standard deviations.

@article{abi2021measurement, title = {{Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm}}, author = {B. Abi and T. Albahri and S. Al-Kilani and D. H. Allspach and L. P. Alonzi and Antonio Anastasi and A. V. Anisenkov and F. Azfar and Karie E. Badgley and S. Baeßler and I. Bailey and V. A. Baranov and E. Barlas-Yucel and Tucker Barrett and E. Barzi and A. Basti and F. Bedeschi and A. Behnke and Martin Berz and Meghna Bhattacharya and H. P. Binney and Robin Bjorkquist and Paul C Bloom and J. Bono and E. Bottalico and T. J. V. Bowcock and Daniel Boyden and G. Cantatore and R. M. Carey and J. Carroll and B. C. K. Casey and D. Cauz and S. Ceravolo and R. Chakraborty and S. P. Chang and A. Chapelain and S. Chappa and S. Charity and Rebecca Thalatta Chislett and Jihoon Choi and Z. Chu and T. E. Chupp and M. E. Convery and Alexander Conway and G. Corradi and S. Corrodi and Lorenzo Cotrozzi and J. Crnkovic and Sultan B. Dabagov and Patrick M. De Lurgio and P. T. Debevec and S. Di Falco and Paolo Di Meo and G. Di Sciascio and R. Di Stefano and B. Drendel and A. Driutti and V. N. Duginov and M. Eads and N. Eggert and Aaron Epps and J. Esquivel and M. Farooq and Renee Fatemi and Carlo Ferrari and M. Fertl and Andrew J. Fiedler and Aaron T. Fienberg and A. Fioretti and D. Flay and S. B. Foster and H. Friedsam and E. Frlež and N. S. Froemming and J. R. Fry and Changbo Fu and C. Gabbanini and M. D. Galati and Sudeshna Ganguly and A. Garcı́a and Daniel Gastler and J. George and L. Gibbons and A. Gioiosa and K. L. Giovanetti and P. Girotti and Wesley P. Gohn and T. P. Gorringe and J. Grange and S. Grant and F. Gray and Selçuk Hacıömeroğlu and D. Hahn and T. Halewood-leagas and D. Hampai and F. Han and Eric Shearer Hazen and J. Hempstead and S. Henry and Alexander T. Herrod and David W. Hertzog and G. Hesketh and A. Hibbert and Z. Hodge and J. L. Holzbauer and Kyun Woo Hong and R. Hong and Michele Iacovacci and Marco Incagli and C. Johnstone and John Johnstone and P. Kammel and M. Kargiantoulakis and Marin Karuza and J. Kašpar and D. Kawall and L. Kelton and A. Keshavarzi and D. Kessler and Kim Siang Khaw and Zepyoor Khechadoorian and N. V. Khomutov and B. Kiburg and M. Kiburg and On Kim and S. C. Kim and Y. I. Kim and B. T. King and N. Kinnaird and M. Korostelev and I. Kourbanis and E. Kraegeloh and В. А. Крылов and Anjaneyulu Kuchibhotla and N. A. Kuchinskiy and K. R. Labe and J.J. LaBounty and M. Lancaster and M. J. Lee and Soohyung Lee and S. Leo and Bingzhi Li and D. Li and L. Li and I.B. Logashenko and A. Lorente Campos and Alessandra Lucà and G. Lukicov and G. Luo and Alberto Lusiani and A. L. Lyon and B. MacCoy and R. Madrak and Kyoko Makino and Fabrizio Marignetti and S. Mastroianni and S. J. Maxfield and M. McEvoy and W. Merritt and ALEXANDER A. MIKHAILICHENKO and James P. Miller and Silvia Miozzi and James P. Morgan and W. M. Morse and James Mott and E. Motuk and Atanu Nath and D. Newton and H. Nguyen and Michael Oberling and Rachel Osofsky and J.-F. Ostiguy and S. Park and Giovanni Pauletta and G. Piacentino and Riccardo Nunzio Pilato and Kevin T. Pitts and Brad Plaster and Dinko Počanič and Nicholas A. Pohlman and C. C. Polly and Milorad B. Popovic and J. Price and B. Quinn and N. Raha and S. Ramachandran and Erik J. Ramberg and N. Rider and J. L. Ritchie and B. L. Roberts and D. L. Rubin and Lorenzo Gianni Santi and Deepak Sathyan and Heidi Marie Schellman and C. Schlesier and A. Schreckenberger and Yannis Kyriakos Semertzidis and Y.M. Shatunov and Dmitry Nikolaevich Shemyakin and M. Shenk and D. Sim and M.W.E. Smith and A. Smith and Aria Soha and Matteo Sorbara and Dominik Stöckinger A and J. Stapleton and Dean A. Still and Chris Stoughton and Diktys Stratakis and C. Strohman and Thomas Stuttard and H. E. Swanson and G. Sweetmore and D. A. Sweigart and Michael J. Syphers and D. A. Tarazona and T. Teubner and A. E. Tewsley-Booth and K. A. Thomson and V. Tishchenko and Nam Hoai Tran and Will Turner and Eremey Valetov and D. Vasilkova and G. Venanzoni and V. P. Volnykh and T. Walton and Matt Warren and A. Weisskopf and Leah Christine Welty-Rieger and M. Whitley and PETER M. WINTER and Andrzej Wolski and Michael Wormald and W. Wu and C. Yoshikawa}, journal = {Physical Review Letters}, year = {2021}, volume = {126}, number = {14}, doi = {10.1103/physrevlett.126.141801}, url = {https://doi.org/10.1103/physrevlett.126.141801} }

TY - JOUR AU - Abi, B. AU - Albahri, T. AU - Al-Kilani, S. AU - Allspach, D. H. AU - Alonzi, L. P. AU - Anastasi, Antonio AU - Anisenkov, A. V. AU - Azfar, F. AU - Badgley, Karie E. AU - Baeßler, S. AU - Bailey, I. AU - Baranov, V. A. AU - Barlas-Yucel, E. AU - Barrett, Tucker AU - Barzi, E. AU - Basti, A. AU - Bedeschi, F. AU - Behnke, A. AU - Berz, Martin AU - Bhattacharya, Meghna AU - Binney, H. P. AU - Bjorkquist, Robin AU - Bloom, Paul C AU - Bono, J. AU - Bottalico, E. AU - Bowcock, T. J. V. AU - Boyden, Daniel AU - Cantatore, G. AU - Carey, R. M. AU - Carroll, J. AU - Casey, B. C. K. AU - Cauz, D. AU - Ceravolo, S. AU - Chakraborty, R. AU - Chang, S. P. AU - Chapelain, A. AU - Chappa, S. AU - Charity, S. AU - Chislett, Rebecca Thalatta AU - Choi, Jihoon AU - Chu, Z. AU - Chupp, T. E. AU - Convery, M. E. AU - Conway, Alexander AU - Corradi, G. AU - Corrodi, S. AU - Cotrozzi, Lorenzo AU - Crnkovic, J. AU - Dabagov, Sultan B. AU - Lurgio, Patrick M. De AU - Debevec, P. T. AU - Falco, S. Di AU - Meo, Paolo Di AU - Sciascio, G. Di AU - Stefano, R. Di AU - Drendel, B. AU - Driutti, A. AU - Duginov, V. N. AU - Eads, M. AU - Eggert, N. AU - Epps, Aaron AU - Esquivel, J. AU - Farooq, M. AU - Fatemi, Renee AU - Ferrari, Carlo AU - Fertl, M. AU - Fiedler, Andrew J. AU - Fienberg, Aaron T. AU - Fioretti, A. AU - Flay, D. AU - Foster, S. B. AU - Friedsam, H. AU - Frlež, E. AU - Froemming, N. S. AU - Fry, J. R. AU - Fu, Changbo AU - Gabbanini, C. AU - Galati, M. D. AU - Ganguly, Sudeshna AU - Garcı́a, A. AU - Gastler, Daniel AU - George, J. AU - Gibbons, L. AU - Gioiosa, A. AU - Giovanetti, K. L. AU - Girotti, P. AU - Gohn, Wesley P. AU - Gorringe, T. P. AU - Grange, J. AU - Grant, S. AU - Gray, F. AU - Hacıömeroğlu, Selçuk AU - Hahn, D. AU - Halewood-leagas, T. AU - Hampai, D. AU - Han, F. AU - Hazen, Eric Shearer AU - Hempstead, J. AU - Henry, S. AU - Herrod, Alexander T. AU - Hertzog, David W. AU - Hesketh, G. AU - Hibbert, A. AU - Hodge, Z. AU - Holzbauer, J. L. AU - Hong, Kyun Woo AU - Hong, R. AU - Iacovacci, Michele AU - Incagli, Marco AU - Johnstone, C. AU - Johnstone, John AU - Kammel, P. AU - Kargiantoulakis, M. AU - Karuza, Marin AU - Kašpar, J. AU - Kawall, D. AU - Kelton, L. AU - Keshavarzi, A. AU - Kessler, D. AU - Khaw, Kim Siang AU - Khechadoorian, Zepyoor AU - Khomutov, N. V. AU - Kiburg, B. AU - Kiburg, M. AU - Kim, On AU - Kim, S. C. AU - Kim, Y. I. AU - King, B. T. AU - Kinnaird, N. AU - Korostelev, M. AU - Kourbanis, I. AU - Kraegeloh, E. AU - Крылов, В. А. AU - Kuchibhotla, Anjaneyulu AU - Kuchinskiy, N. A. AU - Labe, K. R. AU - LaBounty, J.J. AU - Lancaster, M. AU - Lee, M. J. AU - Lee, Soohyung AU - Leo, S. AU - Li, Bingzhi AU - Li, D. AU - Li, L. AU - Logashenko, I.B. AU - Campos, A. Lorente AU - Lucà, Alessandra AU - Lukicov, G. AU - Luo, G. AU - Lusiani, Alberto AU - Lyon, A. L. AU - MacCoy, B. AU - Madrak, R. AU - Makino, Kyoko AU - Marignetti, Fabrizio AU - Mastroianni, S. AU - Maxfield, S. J. AU - McEvoy, M. AU - Merritt, W. AU - MIKHAILICHENKO, ALEXANDER A. AU - Miller, James P. AU - Miozzi, Silvia AU - Morgan, James P. AU - Morse, W. M. AU - Mott, James AU - Motuk, E. AU - Nath, Atanu AU - Newton, D. AU - Nguyen, H. AU - Oberling, Michael AU - Osofsky, Rachel AU - Ostiguy, J.-F. AU - Park, S. AU - Pauletta, Giovanni AU - Piacentino, G. AU - Pilato, Riccardo Nunzio AU - Pitts, Kevin T. AU - Plaster, Brad AU - Počanič, Dinko AU - Pohlman, Nicholas A. AU - Polly, C. C. AU - Popovic, Milorad B. AU - Price, J. AU - Quinn, B. AU - Raha, N. AU - Ramachandran, S. AU - Ramberg, Erik J. AU - Rider, N. AU - Ritchie, J. L. AU - Roberts, B. L. AU - Rubin, D. L. AU - Santi, Lorenzo Gianni AU - Sathyan, Deepak AU - Schellman, Heidi Marie AU - Schlesier, C. AU - Schreckenberger, A. AU - Semertzidis, Yannis Kyriakos AU - Shatunov, Y.M. AU - Shemyakin, Dmitry Nikolaevich AU - Shenk, M. AU - Sim, D. AU - Smith, M.W.E. AU - Smith, A. AU - Soha, Aria AU - Sorbara, Matteo AU - A, Dominik Stöckinger AU - Stapleton, J. AU - Still, Dean A. AU - Stoughton, Chris AU - Stratakis, Diktys AU - Strohman, C. AU - Stuttard, Thomas AU - Swanson, H. E. AU - Sweetmore, G. AU - Sweigart, D. A. AU - Syphers, Michael J. AU - Tarazona, D. A. AU - Teubner, T. AU - Tewsley-Booth, A. E. AU - Thomson, K. A. AU - Tishchenko, V. AU - Tran, Nam Hoai AU - Turner, Will AU - Valetov, Eremey AU - Vasilkova, D. AU - Venanzoni, G. AU - Volnykh, V. P. AU - Walton, T. AU - Warren, Matt AU - Weisskopf, A. AU - Welty-Rieger, Leah Christine AU - Whitley, M. AU - WINTER, PETER M. AU - Wolski, Andrzej AU - Wormald, Michael AU - Wu, W. AU - Yoshikawa, C. TI - Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm JO - Physical Review Letters VL - 126 IS - 14 PY - 2021 DA - 2021/04/07 DO - 10.1103/physrevlett.126.141801 UR - https://doi.org/10.1103/physrevlett.126.141801 ER -

Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

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Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

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