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12 lines
586 B
12 lines
586 B
\midheading{Direct $\gamma$ + heavy flavour production, processes 283--284}
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\label{subsec:heavyfl}
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These processes represent the production a real photon with a $b$
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quark or a $c$ quark Since this process includes a real photon, the
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cross section diverges when the photon is very soft or in the
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direction of the beam. Thus in order to produce sensible results, the
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input file must supply values for both {\tt gammptmin} and {\tt
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gammrapmax}. This will ensure that the cross section is
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well-defined.
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The calculation of process {\tt 283}--{\tt 284} is only available at leading order.
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