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A quark mass definition adequate for threshold problems
Recent calculations of heavy quark cross sections near threshold at next-to-next-to-leading order have found second-order corrections as large as first-order ones. We analyse long-distance contributions to the heavy quark potential in momentum and coordinate space and demonstrate that long-distance...
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| Lenguaje: | eng |
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1998
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| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(98)00741-2 http://cds.cern.ch/record/351442 |