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

By G. Luisoni, P. Nason, Carlo Oleari, Francesco Tramontano. Journal of High Energy Physics, 2013

368 citations recorded by the source corpus.

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 HV 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 HV + 1 jet production but also in HV production, i.e. when the associated jet is not resolved, yielding a further example of matched calculation with no matching scale.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/83821431f01856e25ad65a19ff3c39545537ef0d

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Citations in the corpus

Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “An alternative algorithm to treat radiation from heavy quarks in the Powheg NLO+PS framework has been presented in Ref.”
Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, methodology): “[106] with the histograms obtained with the program of ref.”
Search for Higgs boson pair production in the γ γ bb¯ final state with 13 TeV pp collision data collected by the ATLAS experiment (2018, neutral): “WH Powheg-Box (r3133) [62] Pythia PDF4LHC15 1370 NNLO(QCD)+NLO(EW) Full qq̄ → ZH Powheg-Box (r3133) [62] Pythia 8 PDF4LHC15 760 NNLO(QCD)+NLO(EW Full”
Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report (2016, methodology): “whereas the one-loop amplitudes were generated with GOSAM [44, 283] via the Binoth-LesHouches (BLHA) interface [332, 333], presented for the POWHEG BOX and GOSAM in [500].”
GoSam-2.0: a tool for automated one-loop calculations within the Standard Model and beyond (2014, methodology): “0 of the program GoSam [6], which has been used already to produce a multitude of NLO predictions both within [35, 37–47] and beyond [48, 49] the Standard Model.”
Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at s=13$$ \sqrt{s}=13 $$ TeV (2017, background): “For WH and ZH the MINLO HVJ [33] extension of POWHEG 2.”
Collider physics at the precision frontier (2020, methodology): “The combination of fixed-order QCD computations with parton showers has been studied at NLO+PS in association with up to one jet [204] and at NNLOPS [205, 206, 133] using the MiNLO procedure in Powheg [207].”
Combined measurements of Higgs boson production and decay using up to $80$ fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment (2019, methodology): “The qq → VH production processes were simulated to NLO accuracy in QCD using the POWHEG BOX, GOSAM [72] and MINLO [51,73] generators with the PDF4LHC15 set of PDFs.”