Reweighting QCD matrix-element and parton-shower calculations

被引：77

作者：

Bothmann, Enrico ^{[1
]}

Schonherr, Marek ^{[2
]}

Schumann, Steffen ^{[1
]}

机构：

[1] Univ Gottingen, Inst Phys 2, D-37077 Gottingen, Germany

[2] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

来源：

EUROPEAN PHYSICAL JOURNAL C | 2016年 / 76卷 / 11期

关键词：

CROSS-SECTION CALCULATIONS; COLLISIONS; ALGORITHM;

D O I：

10.1140/epjc/s10052-016-4430-0

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 the Sherpa event-generator framework. By tracing the full as and 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.

引用

页数：24

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