Analysis of e^+e^- ->+circ;-circ;0̂0̂ via initial state radiation at BABAR

Details Analysis of e^+e^- ->+circ;-circ;0̂0̂ via initial state radiation at BABAR Analysis of e^+e^- ->+circ;-circ;0̂0̂ via initial state radiation at BABAR

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.g9005g&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #G9.005

Physics

Scientific paper

Hadronic cross sections are essential for the Standard-Model prediction of the muon anomalous magnetic moment gμ-2, which is currently different from the experimental value by 3.6 standard deviations. The largest hadronic uncertainty on the gμ-2 prediction originates from the energy range 1 < √s < 2 GeV, which consists mainly of the 4π channels +circ;-circ;+circ;-circ; and +circ;-circ;0̂0̂. This talk will focus on the +circ;-circ;0̂0̂ channel. The expected uncertainty on our cross-section measurement is approximately 5%, which will lead to significant improvement in the accuracy of the calculation of this contribution to gμ-2.

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