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

We report on a precision measurement of the cross section for the reaction e(+)e(-) -> pi(+) pi(-) in the mass range 0.30 < M-pi pi < 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-pi pi < 1.00 GeV/c(2) for the process e(+)e(-) -> pi(+) pi(-) 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(-) -> pi(+) pi(-) cross sections in the range M-pi pi = 0.30 to 1.00 GeV/c(2) is calculated to be (500.6 +/- 3.6(stat) +/- 8.0 (syst)) x 10(-10).