Off-shell single-top production at NLO matched to parton showers

被引：44

作者：

Frederix, R. ^{[1
]}

Frixione, S. ^{[2
]}

Papanastasiou, A. S. ^{[3
]}

Prestel, S. ^{[4
]}

Torrielli, P. ^{[5
,6
]}

机构：

[1] Tech Univ Munich, Phys Dept T31, James Franck Str 1, D-85748 Garching, Germany

[2] Ist Nazl Fis Nucl, Sez Genova, Via Dodecaneso 33, I-16146 Genoa, Italy

[3] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 OHE, England

[4] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[5] Univ Turin, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy

[6] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 06期

基金：

英国科学技术设施理事会;

关键词：

NLO Computations; QCD Phenomenology; CROSS-SECTIONS; QUARK PRODUCTION;

D O I：

10.1007/JHEP06(2016)027

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 study the hadroproduction of a Wb pair in association with a light jet, focusing on the dominant t-channel contribution and including exactly at the matrix-element level all non-resonant and off-shell effects induced by the finite top-quark width. Our simulations are accurate to the next-to-leading order in QCD, and are matched to the HERWIG6 and PYTHIA8 parton showers through the MCANLO method. We present phenomenological results relevant to the 8 TeV LHC, and carry out a thorough comparison to the case of on-shell-t-channel single-top production. We formulate our approach so that it can be applied to the general case of matrix elements that feature coloured intermediate resonances and are matched to parton showers.

引用

页码：1 / 36

页数：36

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