Parton Model with Variable Intermediate-State Parton Mass

Greenberg, O. W.; Bhaumik, Debajyoti

doi:10.1103/physrevd.4.2048

Cited by 28 publications

(15 citation statements)

References 15 publications

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“…where F (0) 2 is the structure function in the M 2 /Q 2 → 0 limit. Here the massless limit functions are evaluated in terms of the modified scaling variable ξ [46,47],…”

Section: B Heavy Quarksmentioning

confidence: 99%

Constraints on large-xparton distributions from new weak boson production and deep-inelastic scattering data

et al. 2016

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We present a new set of leading twist parton distribution functions, referred to as "CJ15", which take advantage of developments in the theoretical treatment of nuclear corrections as well as new data. The analysis includes for the first time data on the free neutron structure function from Jefferson Lab, and new high-precision charged lepton and W -boson asymmetry data from Fermilab. These significantly reduce the uncertainty on the d/u ratio at large values of x and provide new insights into the partonic structure of bound nucleons.

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“…where F (0) 2 is the structure function in the M 2 /Q 2 → 0 limit. Here the massless limit functions are evaluated in terms of the modified scaling variable ξ [46,47],…”

Section: B Heavy Quarksmentioning

confidence: 99%

Constraints on large-xparton distributions from new weak boson production and deep-inelastic scattering data

et al. 2016

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show abstract

“…The simplest of these are the target mass corrections, which in the operator product expansion are associated with matrix elements of twist-2 operators with insertions of covariant derivatives [43]. These do not alter the twist classification, but lead to corrections to the structure functions that scale with the Nachtmann variable ξ, where [43,44]…”

Section: B Structure Functions In Qcdmentioning

confidence: 99%

Iterative Monte Carlo analysis of spin-dependent parton distributions

et al. 2016

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We present a comprehensive new global QCD analysis of polarized inclusive deep-inelastic scattering, including the latest high-precision data on longitudinal and transverse polarization asymmetries from Jefferson Lab and elsewhere. The analysis is performed using a new iterative Monte Carlo fitting technique which generates stable fits to polarized parton distribution functions (PDFs) with statistically rigorous uncertainties. Inclusion of the Jefferson Lab data leads to a reduction in the PDF errors for the valence and sea quarks, as well as in the gluon polarization uncertainty at x 0.1. The study also provides the first determination of the flavor-separated twist-3 PDFs and the d 2 moment of the nucleon within a global PDF analysis.

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“…is the Nachtmann scaling variable [33,35], with x = Q 2 /(W 2 − M 2 + Q 2 ) the Bjorken scaling variable, ρ 2 = 1 + 4M 2 x 2 /Q 2 , and M the nucleon mass. The variable η n is given by and vanishes in the Q 2 → ∞ limit.…”

Section: Duality In Electromagnetic Structure Functionsmentioning

confidence: 99%

Quark–hadron duality constraints on γZ box corrections to parity-violating elastic scattering

et al. 2016

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We examine the interference γZ box corrections to parity-violating elastic electron-proton scattering in the light of the recent observation of quark-hadron duality in parity-violating deep-inelastic scattering from the deuteron, and the approximate isospin independence of duality in the electromagnetic nucleon structure functions down to Q 2 ≈ 1 GeV 2 . Assuming that a similar behavior also holds for the γZ proton structure functions, we find that duality constrains the γZ box correction to the proton's weak charge to be e V γZ = (5.4 ± 0.4) × 10 −3 at the kinematics of the Q weak experiment. Within the same model we also provide estimates of the γZ corrections for future parity-violating experiments, such as MOLLER at Jefferson Lab and MESA at Mainz.

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Parton Model with Variable Intermediate-State Parton Mass

Cited by 28 publications

References 15 publications

Constraints on large-xparton distributions from new weak boson production and deep-inelastic scattering data

Constraints on large-xparton distributions from new weak boson production and deep-inelastic scattering data

Iterative Monte Carlo analysis of spin-dependent parton distributions

Quark–hadron duality constraints on γZ box corrections to parity-violating elastic scattering

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