Explicit model realizing parton-hadron duality

Fiore, R.; Flachi, Antonino; Jenkovszky, L. L.; Lengyel, A.; Magas, V. K.

doi:10.1140/epja/i2002-10047-3

Cited by 37 publications

(62 citation statements)

References 19 publications

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“…The numbers presented in table 1 obtained with the code pptoll agrees with the Monte Carlo code lpair [9]. We note large differences between results obtained with the SU and the parametrizations by Fiore et al (labeled as FFJLM) [7] for inelastic-inelastic contribution for different models of F 2 structure functions, especially for high-p T cuts. We shall return to this point in the conclusion section.…”

Section: Results Of K T -Factorization Approachsupporting

confidence: 66%

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Central μ + μ − production via photon-photon fusion in proton-proton collisions with proton dissociation

Silveira

Forthomme

Piotrzkowski

et al. 2015

J. High Energ. Phys.

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We present a formalism which uses fluxes of equivalent photons including transverse momenta of the intermediate photons. The formalism reminds the familiar k tfactorization approach used, e.g., to study the two-gluon production of cc or bb pairs. The results of the new method are compared with those obtained using the code lpair, and a good agreement is obtained. The inclusion of the photon transverse momenta is necessary in studies of correlation observables. We present distributions for the dimuon invariant mass, transverse momentum of the muon pair and relative azimuthal angle between muons separately for elastic-elastic, elastic-inelastic, inelastic-elastic and inelastic-inelastic mechanisms. For typical experimental cuts all mechanisms give similar contributions. The results are shown for different sets of cuts relevant for the LHC experiments. The cross sections in different regions of phase space depend on F 2 structure function in different regions of x and Q 2 . A comment on F 2 is made.

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Section: Results Of K T -Factorization Approachsupporting

confidence: 66%

“…The very low Q 2 region was parametrized in ref. [7] including pronounced resonance states by fitting data from SLAC and JLAB.…”

Section: Introductionmentioning

confidence: 99%

Central μ + μ − production via photon-photon fusion in proton-proton collisions with proton dissociation

Silveira

Forthomme

Piotrzkowski

et al. 2015

J. High Energ. Phys.

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“…Our recent study [13] showed, that here it is best to use a parametrization of F 2 given in [14]. In the left panel of Fig.…”

Section: Pos(dis2016)205mentioning

confidence: 99%

Photoproduction of $J/\psi$ and $Upsilon$ states in exclusive and proton-dissociative diffractive events

Schäfer¹,

Szczurek²,

Cisek³

2016

Proceedings of XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2016)

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The amplitude for γ p → V p, where V is a J/ψ or ϒ ground state or excited vector meson, is calculated in a pQCD k T -factorization approach. We use this amplitude to predict the cross section for exclusive photoproduction of J/ψ, ψ ′ , ϒ mesons in proton-proton collisions. Calculations are performed for a variety of unintegrated gluon distributions, and we compare our results to LHCb data. Here we especially focus on the possibilty of constraining saturation effects. Compared to earlier calculations we include both Dirac and Pauli electromagnetic form factors. We discuss the role of the QQ light-cone wave functions for differential distributions for ratios such as σ (ψ ′ )/σ (J/ψ). Absorption effects are always taken into account.

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“…[4] (see also earlier references cited there) and applied recently to the "golden plate" diffractive processes of J/Psi electroproduction The non-resonance direct-channel pole terms with exotic trajectories, dual to the Pomeron exchange, are (when applied to SDD, Q 2 should be replaced by −t and s by M 2 ) energy.…”

Section: And Sec 4 Of Ref [3])mentioning

confidence: 99%