Reweighting QCD matrix-element and parton-shower calculations
Reweighting QCD matrix-element and parton-shower calculations
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DOI:
10.1140/epjc/s10052-016-4430-0
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发表时间:
2016-06
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影响因子:
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通讯作者:
E. Bothmann;M. Schönherr;S. Schumann
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文献类型:
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作者:
E. Bothmann;M. Schönherr;S. Schumann
We present the implementation and validation of the techniques used to efficiently evaluate parametric and perturbative theoretical uncertainties in matrix-element plus parton-shower simulations within theSherpaevent-generator framework. By tracing the fulland PDF dependences, including the parton-shower component, as well as the fixed-order scale uncertainties, we compute variational event weights on-the-fly, thereby greatly reducing the computational costs to obtain theoretical-uncertainty estimates.