The A dependence of the nuclear structure function ratios

Arneodo, M.; Arvidson, Adam Regn; Badełek, B.; Ballintijn, M.; Baum, G.; Beaufays, J.; Bird, I.; Björkholm, P.; Botje, M.; Broggini, C.; Brückner, W.; Brüll, A.; Burger, W. J.; Ciborowski, J.; vanDantzig, R; Dyring, A.; Engelien, H.; Ferrero, M. I.; Fluri, L.; Gaul, U.; Granier, T.; Grosse‐Perdekamp, M.; vonHarrach, D; vanderHeijden, M; Heusch, C. A.; Ingram, Q.; DeJong, MJ; Kabuß, E. M.; Kaiser, R.; Ketel, T.; Klein, F.; Kullander, S.; Kurek, K.; Landgraf, U.; Lindqvist, T.; Mallot, G.K.; Mariotti, C.; vanMiddelkoop, G; Milsztajn, A.; Mizuno, Y.; Mücklich, A.; Nassalski, J.; Nowotny, D.; Oberski, J.E.J.; Paić, A.; Peroni, C.; Povh, Bogdan; Prytz, Kjell; Rieger, R.; Rith, Klaus; Röhrich, K.; Rondio, E.; Ropelewski, L.; Sandacz, A.; Sanders, D. A.; Scholz, Christoph; Seitz, R.; Sever, F.; Shibata, T. A.; Siebler, Mario; Simon, A.; Staiano, A.; Szleper, M.; Tłaczała, W.; Tzamouranis, Y.; Virchaux, M.; Vuilleumier, J. L.; Walcher, Th.; Windmolders, R.; Witzmann, A.; Заремба, К.; Zetsche, Frank

doi:10.1016/s0550-3213(96)90117-0

Cited by 45 publications

(33 citation statements)

References 35 publications

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“…The number of parameters used in our fitting procedure is equal to 16. It is worthmentioning that some groups have already worked on this subject and provided very elegant FORTRAN codes to analyze the DIS data concerning the nuclear reactions [45][46][47][48][49]. In Fig.…”

Section: Resultsmentioning

confidence: 99%

Nuclear parton densities and their uncertainties at the next-to-leading order

Tehrani

2012

Phys. Rev. C

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Considering the nuclear reactions which involve specific features at certain regions of the x-Bjorken variable which was first observed by the EMC group, we indicate that the parton distributions in nuclei are not simply as the parton densities in nucleons. In addition to the most commonly analyzed data sets for deep-inelastic scattering of charged leptons off nuclei, we also analyze the Drell-Yan dilepton production. We investigate parametrizations of nuclear parton distributions at the next-to-leading order (NLO) of α s . Finally, optimum nuclear structure functions are determined by a χ 2 analysis of experimental data for the nuclear structure function F A 2 /F A 2 and Drell-Yan cross-section ratios. The related uncertainties are estimated by the Hessian method. Our results are in good agreement with the available experimental data and better than the results of some other fitting parametrization methods.

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Section: Resultsmentioning

confidence: 99%

Nuclear parton densities and their uncertainties at the next-to-leading order

Tehrani

2012

Phys. Rev. C

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“…The phenomenon of nuclear shadowing for the quark sea (F 2A (x, Q 2 ) as the leading twist effect is well established experimentally, see e.g. [16] though in a rather limited range of DIS kinematics. Further studies of this phenomenon which is one of the key elements of the physics of AA collisions at LHC may be possible at HERA in a eA mode [17].…”

Section: Shadowing Of Quark Distributions Within a Nucleusmentioning

confidence: 93%

Diffractive production of charm in DIS and gluon nuclear shadowing

Alvero

Frankfurt

Strikman

1999

EPJ A

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We evaluate nuclear shadowing of the total cross section of charm particles production in DIS within the framework of Gribov theory of nuclear shadowing generalized to account for the QCD evolution. We use as an input the recent QCD Pomeron parton density analysis of the HERA diffractive data. Assuming that the QCD factorization theorem is applicable to the charm production off nuclei we also calculate shadowing of the gluon densities in nuclei and find it sufficiently large for heavy nuclei: G A∼200 (x, Q 2 )/AG N (x, Q 2 ) ∼ 0.45 − 0.5 · (A/200) −0.15 for x ∼ 10 −3÷−4 , Q 2 ∼ 20 ÷ 40GeV 2 to influence significantly the physics of heavy ion collisions at LHC. We evaluate also suppression of minijet and hidden charm production in the central AA collisions. We also discuss some * On leave of absence from PSU.

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“…In this analysis, we include all available inclusive DIS measurements of neutral-current structure functions on nuclear targets. In particular, we use data from the EMC [55][56][57][58], NMC [59][60][61][62], and BCDMS experiments at CERN, E139 measurements from SLAC [63], and E665 data from Fermilab. The measurements of nuclear structure functions are typically presented as ratios of the form…”

Section: Experimental Datamentioning

confidence: 99%

Nuclear parton distributions from lepton-nucleus scattering and the impact of an electron-ion collider

2019

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We present a first determination of the nuclear parton distribution functions (nPDF) based on the NNPDF methodology: nNNPDF1.0. This analysis is based on neutral-current deepinelastic structure function data and is performed up to NNLO in QCD calculations with heavy quark mass effects. For the first time in the NNPDF fits, the χ 2 minimization is achieved using stochastic gradient descent with reverse-mode automatic differentiation (backpropagation). We validate the robustness of the fitting methodology through closure tests, assess the perturbative stability of the resulting nPDFs, and compare them with other recent analyses. The nNNPDF1.0 distributions satisfy the boundary condition whereby the NNPDF3.1 proton PDF central values and uncertainties are reproduced at A = 1, which introduces important constraints particularly for low-A nuclei. We also investigate the information that would be provided by an Electron-Ion Collider (EIC), finding that EIC measurements would significantly constrain the nPDFs down to x 5 × 10 −4 . Our results represent the first-ever nPDF determination obtained using a Monte Carlo methodology consistent with that of state-of-the-art proton PDF fits, and provide the foundation for a subsequent global nPDF analyses including also proton-nucleus data.

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The A dependence of the nuclear structure function ratios

Cited by 45 publications

References 35 publications

Nuclear parton densities and their uncertainties at the next-to-leading order

Nuclear parton densities and their uncertainties at the next-to-leading order

Diffractive production of charm in DIS and gluon nuclear shadowing

Nuclear parton distributions from lepton-nucleus scattering and the impact of an electron-ion collider

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