What does kinematical target mass sensitivity in DIS reveal about hadron structure?

Moffat, Eric; Rogers, T. C.; Melnitchouk, Wally; Sato, Nobuo; Steffens, Fernanda

doi:10.1103/physrevd.99.096008

Cited by 18 publications

(14 citation statements)

References 57 publications

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“…In inclusive electronproton scattering, the transition from the low-energy resonance region to the high-energy regime (i.e. DIS) offers broad grounds for exploration [489,491,[497][498][499][500][501][502][503][504]. Leading twist approximations 6 are found to be accurate at describing the region of invariant masses W above the resonances, at sufficiently large photon virtualities, Q 2 1-2 GeV 2 .…”

Section: Nucleon Resonance Contributions To Inclusive Electron Scatte...mentioning

confidence: 99%

Novel approaches in Hadron Spectroscopy

Albaladejo,

Bibrzycki,

Dawid

et al. 2021

Preprint

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The last two decades have witnessed the discovery of a myriad of new and unexpected hadrons. The future holds more surprises for us, thanks to new-generation experiments. Understanding the signals and determining the properties of the states requires a parallel theoretical effort. To make full use of available and forthcoming data, a careful amplitude modeling is required, together with a sound treatment of the statistical uncertainties, and a systematic survey of the model dependencies. We review the contributions made by the Joint Physics Analysis Center to the field of hadron spectroscopy.

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Section: Nucleon Resonance Contributions To Inclusive Electron Scatte...mentioning

confidence: 99%

Novel approaches in Hadron Spectroscopy

Albaladejo,

Bibrzycki,

Dawid

et al. 2021

Preprint

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“…In contrast, the JAM19 analysis [6] applies more conservative cuts that exclude lower-W data, taking W 2 > 10 GeV 2 . Moreover, since the implementation of the TMCs is not unique [47,48,110], the CJ15 analysis adopts the OPE based prescription of Georgi and Politzer [109], while the JAM19 fit employs the collinear factorization (CF) framework throughout, for which the TMCs were evaluated by Aivazis, Olness and Tung (AOT) [111]. The CJ15 parametrization also fitted the higher twist, powersuppressed correction to F 2 (see Appendix A), while the JAM19 [6] analysis was not sensitive to these effects because of the higher-W cuts imposed.…”

Section: A Local Quark-hadron Dualitymentioning

confidence: 99%

“…There are interesting theoretical predictions for the PDFs in the limit x → 1 [42][43][44][45][46], which have never been quantitatively tested. However, extracting information from data in this region requires careful treatment of subleading effects such as target mass corrections [5,7,47,48] and higher twists, as well as factorization breaking corrections. Furthermore, at W < 2 GeV, the inclusive structure functions exhibit peaks related to the contributions from the excited states of the nucleon.…”

Section: Introductionmentioning

confidence: 99%

Resonant contributions to inclusive nucleon structure functions from exclusive meson electroproduction data

Blin,

Melnitchouk,

Mokeev

et al. 2021

Preprint

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Nucleon resonance contributions to the inclusive proton F2 and FL structure functions are computed from resonance electroexcitation amplitudes in the mass range up to 1.75 GeV extracted from CLAS exclusive meson electroproduction data. Taking into account for the first time quantum interference effects, the resonance contributions are compared with inclusive proton structure functions evaluated from (e, e X) cross section data and the longitudinal to transverse cross section ratio. Contributions from isospin-1/2 and 3/2 resonances remain substantial over the entire range of photon virtualities Q 2 4 GeV 2 , where their electroexcitation amplitudes have been obtained, and their Q 2 evolution displays pronounced differences in the first, second and third resonance regions. We compare the structure functions in the resonance region with those computed from parton distributions fitted to deep-inelastic scattering data, and extrapolated to the resonance region, providing new quantitative assessments of quark-hadron duality in inclusive electron-proton scattering.

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“…For the DIS theory, we include corrections that are known to be necessary to accurately describe the highx region. These include target mass corrections, as described by Moffat et al [43], parameterized higher twist corrections, and nuclear corrections for deuterium data. Further details regarding these corrections will be discussed in a future publication [44].…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Bayesian Monte Carlo extraction of sea asymmetry with SeaQuest and STAR data

Cocuzza,

Melnitchouk,

Metz

et al. 2021

Preprint

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We perform a global QCD analysis of unpolarized parton distributions within a Bayesian Monte Carlo framework, including the new W -lepton production data from the STAR Collaboration at RHIC and Drell-Yan di-muon data from the SeaQuest experiment at Fermilab. We assess the impact of these two new measurements on the light antiquark sea in the proton, and the d − ū asymmetry in particular. The SeaQuest data are found to significantly reduce the uncertainty on the d/ū ratio at large parton momentum fractions x, strongly favoring an enhanced d sea up to x ≈ 0.4, in general agreement with nonperturbative calculations based on chiral symmetry breaking in QCD.

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What does kinematical target mass sensitivity in DIS reveal about hadron structure?

Cited by 18 publications

References 57 publications

Novel approaches in Hadron Spectroscopy

Novel approaches in Hadron Spectroscopy

Resonant contributions to inclusive nucleon structure functions from exclusive meson electroproduction data

Bayesian Monte Carlo extraction of sea asymmetry with SeaQuest and STAR data

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