HW±/HZ+0 and 1 jet at NLO with the POWHEG BOX interfaced to GoSam and their merging within MiNLO

被引：158

作者：

Luisoni, Gionata ^{[1
]}

Nason, Paolo ^{[2
]}

Oleari, Carlo ^{[2
,3
]}

Tramontano, Francesco ^{[4
,5
]}

机构：

[1] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[2] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy

[3] Univ Milano Bicocca, I-20126 Milan, Italy

[4] Univ Naples Federico II, I-80126 Naples, Italy

[5] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 10期

关键词：

Monte Carlo Simulations; NLO Computations; SMALL TRANSVERSE-MOMENTUM; PARTON DISTRIBUTIONS; LOOP; GENERATION; INTEGRALS; LIBRARY; LHC;

D O I：

10.1007/JHEP10(2013)083

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 a generator for the production of a Higgs boson H in association with a vector boson V = W or Z (including subsequent V decay) plus zero and one jet, that can be used in conjunction with general-purpose shower Monte Carlo generators, according to the POWHEG method, as implemented within the POWHEG BOX framework. We have computed the virtual corrections using GoSam, a program for the automatic construction of virtual amplitudes. In order to do so, we have built a general interface of the POWHEG BOX to the GoSam package. With this addition, the construction of a POWHEG generator within the POWHEG BOX is now fully automatized, except for the construction of the Born phase space. Our HV + 1 jet generators can be run with the recently proposed MiNLO method for the choice of scales and the inclusion of Sudakov form factors. Since the H V production is very similar to V production, we were able to apply an improved MiNLO procedure, that was recently used in H and V production, also in the present case. This procedure is such that the resulting generator achieves NLO accuracy not only for inclusive distributions in H V + 1 jet production but also in H V production, i.e. when the associated jet is not resolved, yielding a further example of matched calculation with no matching scale.

引用

页数：22

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