Production of the W and Z bosons in the nucleon-(anti)nucleon collisions and the meson cloud in the nucleon

Szczurek, Antoni; Uleshchenko, V.V.; Holtmann, H.; Speth, J.

doi:10.1016/s0375-9474(97)88959-2

Cited by 10 publications

(6 citation statements)

References 52 publications

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“…The solid band is computed using minimum and maximum values of the splitting functions shown in Fig. 3, using the bare sea of [47]. The dashed band includes the effects of varying the bare sea by a factor of 0.75 or 1.25.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Holtmann et al [14] explained that the bare proton sea cannot directly be determined from experimental data, which includes contributions from the pion cloud. They ultimately [47] used a fit to DIS data that included corrections for the pion cloud to determine the bare proton sea. We use their symmetric sea: 15.6 (1 + 0.625x).…”

Section: Application To Parton Distributionsmentioning

confidence: 99%

“…In the upper panel, the domain of the plot includes the range of x covered in the SeaQuest experiment[6]. The solid band is computed using minimum and maximum values of the splitting functions shown in Fig.3, using the bare sea of[47]. The dashed band includes the effects of varying the bare sea by a factor of 0.75 or 1.25.…”

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confidence: 99%

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Chiral light-front perturbation theory and the flavor dependence of the light-quark nucleon sea

Alberg

Miller

2019

Phys. Rev. C

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The light-quark flavor dependence of the proton sea has been of great interest for many years because of its close connection with non-perturbative effects. One hypothesis is that this dependence arises from the pion cloud of the proton. We apply light cone perturbation theory and experimental constraints to a chiral Lagrangian to compute the relevant Fock-space components of the nucleon wave function with well-defined uncertainties. Existing experimental information regarding the light flavor sea is studied, and predictions for future experimental results are provided. Future experiments have the ability to rule out this hypothesis and have profound implications for understanding the nucleon-nucleon force. arXiv:1712.05814v3 [nucl-th]

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Application To Parton Distributionsmentioning

confidence: 99%

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Chiral light-front perturbation theory and the flavor dependence of the light-quark nucleon sea

Alberg

Miller

2019

Phys. Rev. C

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“…For related work on electro-magnetic properties of nucleons and W -boson and jet production in nucleon-nucleon collisions see[13,14].…”

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confidence: 99%

Leading proton spectrum from DIS at HERA

Szczurek¹,

Николаев²,

Speth³

1998

Physics Letters B

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The QCD hardness scale for secondary particles ($h$) production in semi-inclusive deep inelastic scattering (DIS), $e p \to e' X h$, gradually decreases from $Q^{2}$, the photon virtuality which determines the hard scale in the virtual photon (current) fragmentation region to a soft, hadronic, scale in the proton fragmentation region. This suggests similarity of the inclusive spectra of leading protons and neutrons, $h=p,n$, in high energy hadron-proton and virtual photon-proton collisions. We explore this similarity extending to the DIS regime the nonperturbative peripheral mechanisms of inelastic scattering traditionally used in hadronic interactions to explain fast nucleons production. While the production of leading neutrons is known to be exhausted by DIS off charged pions, the production of leading protons by DIS off neutral pions must be supplemented by a substantial contribution from isoscalar reggeon ($f_{0}$) exchange extrapolated down to moderate values of $x_{L}$. We comment on the $x$ and $Q^{2}$ dependence of leading proton production as a probe of a universal pattern of the $x,Q^{2}$ evolution of the nucleon and meson (reggeon) structure functions at small $x$.Comment: 13 pages, 4 Postscript figure

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“…Therefore all the present analyses are to some extent biased by the explicit assumption of IS. In [ 19] we have suggested how to test the ū − d asymmetry avoiding the assumption of IS. We suggested to measure at RHIC the asymmetry…”

mentioning

confidence: 99%