A Tau-Charm Fa&ory at BEPC
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چکیده
منابع مشابه
The BES - III experiment at the high luminosity Tau - Charm factory
In early 80’s, Chinese government decided to build an ee collider running at the tau-charm energy region, called BEPC, which is completed in 1989. The only detector at the machine is called Beijing spectrometer(BES). In mid 90’s, there has been a minor upgrade of the detector, which is then called BESII. Since then, hundreds of papers have been published on the international journals, some with...
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The BEPC e+e− storage ring and the BES detector have made important contributions to our understanding of the τ -lepton and charmed quark systems. For instance, measurements of R = σ(e+e− → hadrons)/σ(e+e− → μ+μ−), crucial for determining the hadronic contribution to the vacuum polarization in the BEPC energy region, have had a profound impact on the determination of αQED at the mass scale of t...
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تاریخ انتشار 1998