Updates of PDFs for the 2nd LHC run

Harland–Lang, Lucian; Martin, A. D.; Motylinski, Patrick; Thorne, R. S.

doi:10.1063/1.4915959

Cited by 79 publications

(207 citation statements)

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“…[1], is an example of such a program. APFEL is a parton distribution function (PDF) evolution library [2,3,4,5,6] which specialises in the solution of the DGLAP evolution equations with QED corrections. The library also provides a native graphical user interface (APFEL GUI) with plotting tools for PDF comparison, luminosities, deep-inelastic scattering (DIS) observables and theoretical prediction computed through the APPLgrid interface [7].…”

Section: Introductionmentioning

confidence: 99%

APFEL Web: a web-based application for the graphical visualization of parton distribution functions

Carrazza

Ferrara

Palazzo

et al. 2015

J. Phys. G: Nucl. Part. Phys.

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Abstract. We present APFEL Web, a Web-based application designed to provide a flexible user-friendly tool for the graphical visualization of parton distribution functions (PDFs). In this note we describe the technical design of the APFEL Web application, motivating the choices and the framework used for the development of this project. We document the basic usage of APFEL Web and show how it can be used to provide useful input for a variety of collider phenomenological studies. Finally we provide some examples showing the output generated by the application.

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Section: Introductionmentioning

confidence: 99%

APFEL Web: a web-based application for the graphical visualization of parton distribution functions

Carrazza

Ferrara

Palazzo

et al. 2015

J. Phys. G: Nucl. Part. Phys.

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“…Such a conclusion does not however follow in general at the LHC, where the larger √ s implies that much of the data lie very far from threshold, while those data that do not in fact probe a kinematically very similar region to the existing Tevatron data. For this reason LHC jet data were omitted from the fit, although a number of exploratory studies with different toy models for the NNLO K-factors were performed in [1], and the impact on the gluon PDF was found to be relatively minor. However, in [11] the first calculation of fully differential jet production at NNLO was presented, allowing LHC jet data to be correctly included in a NNLO PDF fit for the first time.…”

Section: The Impact Of Lhc Jet Datamentioning

confidence: 99%

“…It combines a range of theoretical updates with new data, including for the first time measurements from the LHC. Subsequent studies on the α s determination [3] and heavy quark mass dependence [4] were performed. More recently, the impact of the final combined HERA I+II data set [5] was examined [6].…”

Section: Introductionmentioning

confidence: 99%

“…Subsequent studies on the α s determination [3] and heavy quark mass dependence [4] were performed. More recently, the impact of the final combined HERA I+II data set [5] was examined [6]. Here, the MMHT14 PDFs were found to give a good description of the HERA data, with the central * Presented at XXIII Cracow Epiphany Conference.…”

Section: Introductionmentioning

confidence: 99%

“…The MMHT14 parton distribution function (PDF) set [1] is the successor to the MSTW08 [2] PDFs. It combines a range of theoretical updates with new data, including for the first time measurements from the LHC.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

MMHT PDFs: Updates and Outlook

Harland–Lang¹,

Martin²,

Nathvani³

et al. 2017

Acta Phys. Pol. B

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We present the latest results of studies within the MMHT PDF framework. We discuss the impact of the most recent ATLAS 7 TeV jet data, demonstrating that while a good fit can be achieved for individual jet rapidity bins, it is not possible to achieve a good description of the data when all bins are fitted. We examine the role that the experimental correlated systematic uncertainties play in this, and demonstrate that by simply decorrelating no more than two sources of error between rapidity bins a remarkably improved description of the data can be achieved. We then study the impact of NNLO corrections, showing that a mild decrease in the fit quality is produced. We also present the results of including new LHC W , Z, W + c and tt data on the MMHT14 PDF set, showing that a marked decrease in the s + s uncertainty is in particular achieved. Finally, some discussion of the latest work towards the inclusion of the photon PDF within the MMHT framework is presented.

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Zγ production in vector-boson scattering at next-to-leading order QCD

Campanario

Kerner

Zeppenfeld³

2018

J. High Energ. Phys.

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Cross sections and differential distributions for Zγ production in association with two jets via vector boson fusion are presented at next-to-leading order in QCD. The leptonic decays of the Z boson with full off-shell effects and spin correlations are taken into account. The uncertainties due to different scale choices and pdf sets are studied. Furthermore, we analyze the effect of including anomalous quartic gauge couplings at NLO QCD.

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Updates of PDFs for the 2nd LHC run

Cited by 79 publications

References 0 publications

APFEL Web: a web-based application for the graphical visualization of parton distribution functions

APFEL Web: a web-based application for the graphical visualization of parton distribution functions

MMHT PDFs: Updates and Outlook

Zγ production in vector-boson scattering at next-to-leading order QCD

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