Charm and bottom photoproduction at HERA with MC@NLO

Toll, T.; Frixione, Stefano

doi:10.1016/j.physletb.2011.08.021

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…All these processes are implemented for hadron-hadron collisions. Heavy quark photoproduction has been considered in [18]. The aMC@NLO project, developing a fully automated NLO event generator based on the MC@NLO scheme, with loop corrections from MadLoop [19] using the OPP method [20,21], has provided results on a range of more complex processes of interest [22,23,24].…”

Section: Mc@nlomentioning

confidence: 99%

Next-to-Leading-Order Event Generators

Nason

Webber

2012

Annu. Rev. Nucl. Part. Sci.

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We review the methods developed for combining the parton shower approximation to QCD with fixed-order perturbation theory, in such a way as to achieve next-toleading-order (NLO) accuracy for inclusive observables. This has made it possible to generate fully-simulated hadronic final states with the precision and stability of NLO calculations. We explain the underlying theory of the existing methods, MC@NLO and POWHEG, together with their similarities, differences, achievements and limitations. For illustration we mainly compare results on Higgs boson production at the LHC, with particular emphasis on the residual uncertainties arising from the different treatment of effects beyond NLO. We also briefly summarize the difference between these NLO + parton shower methods and matrix-element + parton shower matching, and current efforts to combine the two approaches.

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Section: Mc@nlomentioning

confidence: 99%

Next-to-Leading-Order Event Generators

Nason

Webber

2012

Annu. Rev. Nucl. Part. Sci.

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“…The data show a larger relative contribution from resolved photon processes in beauty compared to charm production. The data are reasonably well described by the MC models and the MC@NLO [8] calculation with the exception of HER-WIG [9] which is low in normalisation. For charm production the central prediction of MC@NLO fall also below the data.…”

Section: Charm and Beauty Photoproduction Using Semi-muonic Decays Inmentioning

confidence: 94%

Measurement of Beauty and Charm Photoproduction at HERA

Daum¹

2013

Proceedings of XXI International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS 2013)

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On behalf of the H1 collaboration Recent measurements of open beauty and charm photoproduction cross sections from the H1 Collaboration at HERA are summarised. Results from two new analyses are presented which are based on the identification of heavy quark production via semi-leptonic decays of heavy flavour hadrons. Leading and next-to-leading order QCD predictions are compared to these measurements.

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“…For this process, ggg, qqg collinear as well as interference terms need to be taken into account; these are given by Eqns. (58), (46), and (61) respectively. We have for the collinear subtraction terms…”

Section: 22mentioning

confidence: 99%

“…More accurate predictions therefore call for the inclusion of these NLO calculations in Monte Carlo event generators, which provide predictions for fully differential corrections to the LO process. Many such generators exist at parton level [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], and in recent years a lot of progress has equally been made to automatize the matching of these processes with parton showers in the Powheg and (a)MC@NLO [22,[41][42][43][44][45][46][47][48][49]] frameworks 1 .…”

Section: Introductionmentioning

confidence: 99%

Nagy-Soper subtraction scheme for multiparton final states

Chung

Robens

2013

Phys. Rev. D

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In this work, we present the extension of an alternative subtraction scheme for next-to-leading order QCD calculations to the case of an arbitrary number of massless final-state partons. The scheme is based on the splitting kernels of an improved parton shower and comes with a reduced number of final state momentum mappings. While a previous publication including the setup of the scheme has been restricted to cases with maximally two massless partons in the final state, we here provide the final state real emission and integrated subtraction terms for processes with any number of massless partons. We apply our scheme to three jet production at lepton colliders at next-to-leading order and present results for the differential C parameter distribution.Comment: 45 pages, 5 figures v2: several references added; v3: title changed, references and a discussion of further scaling improvement added. Corresponds to published journal versio

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Charm and bottom photoproduction at HERA with MC@NLO

Cited by 8 publications

References 19 publications

Next-to-Leading-Order Event Generators

Next-to-Leading-Order Event Generators

Measurement of Beauty and Charm Photoproduction at HERA

Nagy-Soper subtraction scheme for multiparton final states

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