Hadron production in e⁺e^- annihilation at BABAR, and implication for the muon anomalous magnetic moment [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 539 Modern physics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of High Energy Physics ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
• Mô tả vật lý: Size: 10 p. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 268232
• Chủ đề: 1. 72 physics of elementary particles and fields; 2. Kaons minus; 3. Kaons plus; 4. Pions minus; 5. Pions plus

Tóm tắt

 The BABAR collaboration has an extensive program of studying hadronic cross sections in low-energy e<
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  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<
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  ? K<
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 , ?<
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 , and e<
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  ? 4 hadrons