Measurement of Jet Production Cross Sections in Deep-inelastic ep Scattering at HERA

doi:10.48550/arxiv.1611.03421

Cited by 9 publications

(36 citation statements)

References 75 publications

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“…7.3.4. We also consider a selection of differential cross-sections for single-inclusive and dijet production in DIS measured by ZEUS [110][111][112] and H1-HeraII [113,114], again only in a variant determination that will be discussed in Sect. 7.3.5.…”

Section: Overview Of the Nnpdf40 Datasetmentioning

confidence: 99%

“…We consider a selection of DIS single-inclusive jet (1j) and dijet production (2j) cross-sections measured by ZEUS [110][111][112] in the high-Q (HQ) region and by H1-HeraII [113,114] in the HQ and low-Q (LQ) regions. Specifically we consider cross-sections double differential in Q 2 and in the transverse momentum of the jet or of the jet pair, listed in Table 2.2.…”

Section: Jet Production In Deep-inelastic Scatteringmentioning

confidence: 99%

“…Additional available measurements, in particular from H1-HeraI [157,158], are left for future studies. Likewise, variants of the H1-HeraII measurements [113,114], in which cross-sections are normalized to the inclusive NC cross-section integrated over the width of each Q 2 bin, are not yet considered. These normalized cross-sections might benefit from cancellations of systematic uncertainties and uncertainty correlation with HERA inclusive DIS measurements.…”

Section: Jet Production In Deep-inelastic Scatteringmentioning

confidence: 99%

“…We now discuss a number of PDF sets determined by adding specific measurements to the baseline. We consider in turn: the ATLAS 8 TeV W ± lepton rapidity distributions [79]; the EMC charm structure function data [42]; the 7 TeV ATLAS and CMS single-inclusive jet data [73,147] (in lieu of dijets); the NOMAD neutrino dimuon data [109]; and the HERA single-inclusive and dijet data [110,111,113,114]. In the last two cases, the impact of the additional measurements is studied by means of Bayesian reweighting [155,156], for the reasons explained in Sect.…”

Section: Pdfs From Extended Datasetsmentioning

confidence: 99%

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The Path to Proton Structure at One-Percent Accuracy

Ball,

Carrazza,

Cruz-Martinez

et al. 2021

Preprint

144

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We present a new set of parton distribution functions (PDFs) based on a fully global dataset and machine learning techniques: NNPDF4.0. We expand the NNPDF3.1 determination with 44 new datasets, mostly from the LHC. We derive a novel methodology through hyperparameter optimisation, leading to an efficient fitting algorithm built upon stochastic gradient descent. We use NNLO QCD calculations and account for NLO electroweak corrections and nuclear uncertainties. Theoretical improvements in the PDF description include a systematic implementation of positivity constraints and integrability of sum rules. We validate our methodology by means of closure tests and "future tests" (i.e. tests of backward and forward data compatibility), and assess its stability, specifically upon changes of PDF parametrization basis. We study the internal compatibility of our dataset, and investigate the dependence of results both upon the choice of input dataset and of fitting methodology. We perform a first study of the phenomenological implications of NNPDF4.0 on representative LHC processes. The software framework used to produce NNPDF4.0 is made available as an open-source package together with documentation and examples.

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Section: Overview Of the Nnpdf40 Datasetmentioning

confidence: 99%

Section: Jet Production In Deep-inelastic Scatteringmentioning

confidence: 99%

Section: Jet Production In Deep-inelastic Scatteringmentioning

confidence: 99%

Section: Pdfs From Extended Datasetsmentioning

confidence: 99%

See 2 more Smart Citations

The Path to Proton Structure at One-Percent Accuracy

Ball,

Carrazza,

Cruz-Martinez

et al. 2021

Preprint

144

View full text Add to dashboard Cite

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“…Cross sections for jet production in ep collisions have been measured by the H1 experiment at HERA at different center-of-mass energies and for different kinematic regions. Here, jet and dijet cross sections taken during the years 1995 to 2007 [3,4,5,7,6] are considered. Consistent to all data sets, jets are defined using the k t jet-algorithm with a parameter of R = 1, and jets are required to be contained in the pseudorapidity range −1 < η jet lab < 2.5 defined in the laboratory frame.…”

Section: Methodsmentioning

confidence: 99%

Determination of the strong coupling at NNLO from jet production in DIS

Britzger¹

2017

Proceedings of XXV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2017)

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A first determination of the strong coupling α s (m Z ) in next-to-next-to-leading order (NNLO) from inclusive jet and dijet production cross sections in deep-inelastic scattering at HERA is presented. Data collected by the H1 experiment in the years 1995 to 2007 covering the range of momentum transfer 5.5 < Q 2 < 15 000 GeV 2 and jet transverse momenta P jet T > 4.5 GeV are explored. The strong coupling is determined in a fit to inclusive jet and dijet data to α s (m Z ) = 0.1157 (6) exp ( +31 −26 ) theo . Further studies on the phenomenological application of the new NNLO calculations and on fits to the individual data sets are presented. The running of the strong coupling is probed in a single experiment over one order of magnitude in the remormalisation scale and consistency with the QCD expectations is found.

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Measurement and QCD analysis of double-differential inclusive jet cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV and cross section ratios to 2.76 and 7 TeV

Khachatryan¹,

Sirunyan²,

Tumasyan³

et al. 2017

J. High Energ. Phys.

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Measurement and QCD analysis of double-differential inclusive jet cross sections in pp collisions at √ s = 8 TeV and cross section ratios to 2.76 and 7 TeVThe CMS collaboration E-mail: cms-publication-committee-chair@cern.ch Abstract: A measurement of the double-differential inclusive jet cross section as a function of the jet transverse momentum p T and the absolute jet rapidity |y| is presented. Data from LHC proton-proton collisions at √ s = 8 TeV, corresponding to an integrated luminosity of 19.7 fb −1 , have been collected with the CMS detector. Jets are reconstructed using the anti-k T clustering algorithm with a size parameter of 0.7 in a phase space region covering jet p T from 74 GeV up to 2.5 TeV and jet absolute rapidity up to |y| = 3.0. The low-p T jet range between 21 and 74 GeV is also studied up to |y| = 4.7, using a dedicated data sample corresponding to an integrated luminosity of 5.6 pb −1 . The measured jet cross section is corrected for detector effects and compared with the predictions from perturbative QCD at next-to-leading order (NLO) using various sets of parton distribution functions (PDF). Cross section ratios to the corresponding measurements performed at 2.76 and 7 TeV are presented. From the measured double-differential jet cross section, the value of the strong coupling constant evaluated at the Z mass is α S (M Z ) = 0.1164−0.0043 , where the errors include the PDF, scale, nonperturbative effects and experimental uncertainties, using the CT10 NLO PDFs. Improved constraints on PDFs based on the inclusive jet cross section measurement are presented.

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Measurement of Jet Production Cross Sections in Deep-inelastic ep Scattering at HERA

Cited by 9 publications

References 75 publications

The Path to Proton Structure at One-Percent Accuracy

The Path to Proton Structure at One-Percent Accuracy

Determination of the strong coupling at NNLO from jet production in DIS

Measurement and QCD analysis of double-differential inclusive jet cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV and cross section ratios to 2.76 and 7 TeV

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