Hadron production in e^+e^- annihilation at BABAR, and implication for the muon anomalous magnetic moment
- Creators
- Porter, Frank C.
- BaBar Collaboration
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^- → K^+K^-, π^+π^-, and e^+e^- → 4 hadrons.
Additional Information
Paper presented at: DPF 2013. The Meeting of the American Physical Society Division of Particles and Fields Santa Cruz, California, August 13-17, 2013. I am grateful to my BABAR colleagues for many stimulating discussions. This work is supported in part by the U. S. Department of Energy under grant DE-FG02-92-ER40701.Attached Files
Submitted - 1310.3300v1.pdf
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Additional details
- Eprint ID
- 42099
- Resolver ID
- CaltechAUTHORS:20131028-140659194
- DE-FG02-92-ER40701
- Department of Energy (DOE)
- Created
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2013-10-28Created from EPrint's datestamp field
- Updated
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2023-06-02Created from EPrint's last_modified field