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تسجيل مستخدم جديدMeasurements of low energy e+e- hadronic cross sections and implications for the muon g-2
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B. Malaescu
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Numerous channels of the cross section e+e- --> hadrons have been measured by the BABAR experiment using the ISR method. For the pi+pi-(gamma) and K+K-(gamma) channels, BABAR has pioneered the method based on the ratio between the hadronic mass spectra and mu+mu-(gamma). Many systematic uncertainties cancel in the ratio, hence the precise measured cross sections. These measurements have been exploited for phenomenological studies, like the determination of the hadronic contribution to the anomalous magnetic moment of the muon (g-2)_mu.
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The BABAR collaboration has nearly completed a program of precise measurements of the cross sections for the dominant channels of e+e- --> hadrons from threshold to an energy of 3-5 GeV using the initial-state radiation (ISR) method, i.e. the measure
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The Born cross sections are measured for the first time for the processes $e^+e^-to D_s^{*+}D_{s0}^*(2317)^- +c.c.$ and $e^+e^-to D_s^{*+}D_{s1}(2460)^- +c.c.$ at the center-of-mass energy $sqrt{s}=$ 4.600~GeV, 4.612~GeV, 4.626~GeV, 4.640~GeV, 4.660~
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