Precision measurement of the hadronic contribution to the muon anomalous magnetic moment

Open Access

Precision measurement of the hadronic contribution to the muon anomalous magnetic moment

T. Xiao, S. Dobbs, A. Tomaradze, Kamal K. Seth, and G. Bonvicini

Phys. Rev. D 97, 032012 – Published 27 February 2018

Abstract

We report on a precision measurement of the cross section for the reaction $e^{+} e^{-} \to π^{+} π^{-}$ in the mass range $0.30 < M_{π π} < 1.00 GeV / c^{2}$ with the initial state radiation (ISR) method, using $817 {pb}^{- 1}$ of data at $e^{+} e^{-}$ center-of-mass energies near 3.77 GeV and $586 {pb}^{- 1}$ of data at $e^{+} e^{-}$ center-of-mass energies near 4.17 GeV, collected with the CLEO-c detector at the CESR $e^{+} e^{-}$ collider at Cornell University. The integrated cross sections in the range $0.30 < M_{π π} < 1.00 GeV / c^{2}$ for the process $e^{+} e^{-} \to π^{+} π^{-}$ are determined with a statistical uncertainty of 0.7% and a systematic uncertainty of 1.6%. The leading-order hadronic contribution to the muon anomalous magnetic moment calculated using these measured $e^{+} e^{-} \to π^{+} π^{-}$ cross sections in the range $M_{π π} = 0.30$ to $1.00 GeV / c^{2}$ is calculated to be $(500.6 \pm 3.6 (stat) \pm 8.0 (syst)) \times 10^{- 10}$ .

7 More

Received 11 December 2017

DOI:https://doi.org/10.1103/PhysRevD.97.032012

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Hadronic decays Lepton-lepton interactions Quantum chromodynamics

Particles & FieldsNuclear Physics

Authors & Affiliations

T. Xiao¹, S. Dobbs^1,*, A. Tomaradze¹, Kamal K. Seth¹, and G. Bonvicini²

¹Northwestern University, Evanston, Illinois 60208, USA
²Wayne State University, Detroit, Michigan 48202, USA

^*Present address: Florida State University, Tallahassee, Florida 32306, USA.

Article Text

Click to Expand

References

Click to Expand

Issue

Vol. 97, Iss. 3 — 1 February 2018

Reuse & Permissions

Author publication services for translation and copyediting assistance advertisement

Physical Review D

covering particles, fields, gravitation, and cosmology