Hadron production in e+e- annihilation at BaBar, and implication for the muon anomalous magnetic moment
Abstract
The BaBar collaboration has an extensive program of studying hadronic cross sections in low-energy e+e- collisions, accessible via initial-state radiation. Our measurements allow significant improvements in the precision of the predicted value of the muon anomalous magnetic moment. These improvements are necessary for illuminating the current ~3.6 sigma difference between the predicted and the experimental values. We have published results on a number of processes with two to six hadrons in the final state. We report here the results of recent studies with final states that constitute the main contribution to the hadronic cross section in the energy region between 1 and 3 GeV, as e+e- to K+K-, pi+pi-, and e+e- to 4 hadrons.
Keywords
Cite
@article{arxiv.1310.3300,
title = {Hadron production in e+e- annihilation at BaBar, and implication for the muon anomalous magnetic moment},
author = {Frank C. Porter},
journal= {arXiv preprint arXiv:1310.3300},
year = {2013}
}
Comments
Presentation at the DPF 2013 Meeting of the American Physical Society Division of Particles and Fields, Santa Cruz, California, August 13-17, 2013. 10 pages, 8 figures, 2 tables