Interaction region of high energy protons

Dremin, I.

doi:10.3367/ufne.0185.201501d.0065

Cited by 56 publications

(77 citation statements)

References 23 publications

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“…As noted in [33][34][35] the region near the central collision (b = 0 fm) presents a growing gray area indicating a tendency for higher energies, corroborated by [63,64]. Moreover, the inelastic overlap function is well-described only by the use of at least two Gaussian [64].…”

Section: Final Remarksmentioning

confidence: 73%

The Tsallis entropy and the BKT-like phase transition in the impact parameter space for pp and $\bar{p}p$ collisions

2020

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In this paper, one uses the Tsallis entropy in the impact parameter space to study pp andpp inelastic overlap function and the energy density filling up mechanism responsible by the so-called black disk limit as the energy increases. The Tsallis entropy is non-additive and non-extensive and these features are of fundamental importance since the internal constituents of pp andpp are strongly correlated and also the existence of the multifractal character of the total cross-section. The entropy approach presented here takes into account a phase transition occurring inside the hadrons as the energy increases. This phase transition in the impact parameter space is quite similar to the Berezinskii-Kosterlitz-Thouless phase transition, possessing also a topological feature due to the multifractal dimension of the total cross-sections in pp andpp scattering.

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Section: Final Remarksmentioning

confidence: 73%

The Tsallis entropy and the BKT-like phase transition in the impact parameter space for pp and $\bar{p}p$ collisions

2020

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“…Therefore, compared to ISR data, the darkness of central collisions strongly increases at the LHC. The inelastic interaction region becomes completely black at impact parameters b up to 0.5 fm [7]. The interaction region is completely absorptive (G(s, 0) = 1) in the center only at ζ = 1 and the absorption diminishes for other values of ζ. Eq.…”

Section: Profilesmentioning

confidence: 96%

Will protons become gray at 13 TeV and 100 TeV?

Dremin

2017

Bull. Lebedev Phys. Inst.

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It is shown that the regime of pp-interactions at 7 TeV is a critical one. The LHC data about elastic pp-scattering at 7 and 8 TeV are used to get some information about both elastic and inelastic profiles of pp-collisions. They are discussed in the context of two phenomenological models which intend to describe the high energy pp-data with high accuracy. Some predictions following from these models for LHC energy 13 TeV and for energy 95 TeV of the newly proposed collider are discussed. It is claimed that the center of the inelastic interaction region will become less dark with increase of energy albeit very slowly.

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“…43,44 . The problem of parton cloud structure of hadrons with ultrahigh energy is a subject of lively discussions [45][46][47][48][49][50] . A slow growth of the parton cloud radius with energy increase argues for a glueball origin of the parton clouds [23][24][25] , the glueball origin of the parton clouds leads to the universality of all hadron total cross sections 51 .…”

Section: Resultsmentioning

confidence: 99%

Asymptotic regimes for hadron diffractive scatterings and Coulomb interaction: Arguments for the black disk mode

Anisovich

Nikonov

Nyíri

2016

Int. J. Mod. Phys. A

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Comparative analysis of the interplay of hadron and Coulomb interactions in pp ± scattering amplitudes is performed in a broad energy interval, √ s = 1 − 10 6 TeV, for two extreme cases: for the asymptotic interactions of hadrons in black disk and resonant disk modes. The interactions are discussed in terms of the K-matrix function technique. In the asymptotic regime the real part of the hadronic amplitude is concentrated in both cases on the boundary of the disks in the impact parameter space but the LHC energy region is not asymptotic for the resonant disk mode that lead to a specific interplay of hadronic and coulombic amplitudes. For the pp scattering at √ s ∼ 10 TeV an interplay of the hadron and Coulomb interactions in the resonant disk modes is realized in a shoulder in dσ el /dq 2 at q 2 ∼ 0.0025 − 0.0075 GeV 2 . The absence of such a shoulder in the data at 8 TeV can be considered as an argument against the resonant disk mode.

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Interaction region of high energy protons

Cited by 56 publications

References 23 publications

The Tsallis entropy and the BKT-like phase transition in the impact parameter space for pp and $\bar{p}p$ collisions

The Tsallis entropy and the BKT-like phase transition in the impact parameter space for pp and $\bar{p}p$ collisions

Will protons become gray at 13 TeV and 100 TeV?

Asymptotic regimes for hadron diffractive scatterings and Coulomb interaction: Arguments for the black disk mode

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