The multilayer structure of protons

Dremin, I.

doi:10.1140/epjc/s10052-020-7742-z

Cited by 14 publications

(12 citation statements)

References 19 publications

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“…One new finding is that at b = 0, the elastic scattering profile, dσ/db elas increases with the incident energy very quickly beyond 13 TeV, whereas the inelastic profile decreases. These properties are also reported in [55] and [53,54], respectively. The dominance of elastic process at b = 0 with quick energy variation predicted here, together with the increasing suppression ("hollowness") of inelastic channel, certainly introduces a new clue for the role of proton structure in very high energy collisions.…”

Section: Final Commentssupporting

confidence: 63%

“…Similar conjecture of the existence of a layer-structure in the proton, revealed in pp scattering at high energies, based on the observation that there is a range of nearly linear behaviour in dσ/dt, is discussed by Dremin [55] (and references therein for related work). In contrast to the above mentioned [53,54] approach, this work deals with the elastic profile.…”

Section: Models On the Space Structure Of The Protonsupporting

confidence: 62%

“…As mentioned before, our prediction for 50 GeV shows much more clearly the "hard core" structure of the elastic profile function for central collisions. Unfortunately, a direct quantitative comparison of this work [55] with our result is not available. (11,14) and Table 1 in solid line, BSW model [49] in dashed line and Selyugin's HEGS model [50][51][52] in dotted line.…”

Section: Models On the Space Structure Of The Protonmentioning

confidence: 81%

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Analytical representation for amplitudes and differential cross section of pp elastic scattering at 13 TeV

2021

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With analytical representation for the pp scattering amplitudes introduced and tested at lower energies, a description of high precision is given of the $$d\sigma /dt$$ d σ / d t data at $$\sqrt{s}= 13$$ s = 13 TeV for all values of the momentum transfer, with explicit identification of the real and imaginary parts. In both t and b coordinates the amplitudes have terms identified as of non-perturbative and perturbative nature, with distinction of their influences in forward and large |t| ranges and in central and peripheral regions respectively. In the forward range, the role of the Coulomb-nuclear interference phase is investigated. The energy dependence of the parameters of the amplitudes are reviewed and updated, revealing a possible emergence of a peculiar behavior of elastic and inelastic profiles in b-space for central collisions, which seems to be enhanced quickly at higher energies. Some other models are also briefly discussed in comparison, including the above mentioned behavior in b-space.

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Section: Final Commentssupporting

confidence: 63%

Section: Models On the Space Structure Of The Protonsupporting

confidence: 62%

Section: Models On the Space Structure Of The Protonmentioning

confidence: 81%

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Analytical representation for amplitudes and differential cross section of pp elastic scattering at 13 TeV

2021

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“…The first extraction of the pressure distribution inside the proton has already generated over 70 citations, and inspired many theoretical papers that, among others, relate the pressure distribution to limits on deviations from general relativity at short distance [295], applications to computing the equation of state in neutron stars [296], Lattice calculations of gluon contributions to the pressure distribution [297], studies of a two-scale structure of the proton related to LHC results [298][299][300][301], computations of the proton mechanical radius [302,303], a detailed review paper [304], extensions of the concept of mechanical properties [305] and others.…”

Section: F Mapping the Energy-momentum Tensor Of Ground State Nucleons From Dvcs Datamentioning

confidence: 99%

Strong QCD from Hadron Structure Experiments

Brodsky

Burkert

Carman

et al. 2020

Int. J. Mod. Phys. E

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The topical workshop Strong QCD from Hadron Structure Experiments took place at Jefferson Lab from November 6–9, 2019. Impressive progress in relating hadron structure observables to the strong QCD mechanisms has been achieved from the ab initio QCD description of hadron structure in a diverse array of methods in order to expose emergent phenomena via quasi-particle formation. The wealth of experimental data and the advances in hadron structure theory make it possible to gain insight into strong interaction dynamics in the regime of large quark–gluon coupling (the strong QCD regime), which will address the most challenging problems of the Standard Model on the nature of the dominant part of hadron mass, quark–gluon confinement, and the emergence of the ground and excited state hadrons, as well as atomic nuclei, from QCD. This workshop aimed to develop plans and to facilitate the future synergistic efforts between experimentalists, phenomenologists, and theorists working on studies of hadron spectroscopy and structure with the goal to connect the properties of hadrons and atomic nuclei available from data to the strong QCD dynamics underlying their emergence from QCD. These results pave the way for a future breakthrough extension in the studies of QCD with an Electron–Ion Collider in the U.S.

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“…However, the idea of the appearance at high energies of a hollow in the nucleon interaction region is intensively discussed, see [21][22][23] and the references therein. Irrespective of this, recent analysis [24] of the TOTEM data at 13 TeV led to the conclusion about the multilayer structure of the protons, with the spatial size of the inner layer near 0.45 fm. This value should be compared with r in Table 2.…”

Section: The Mode Of Correlated Motion Of the Partonsmentioning

confidence: 99%

On the Shape of Nucleons at High Energies

Nekrasov

2021

Particles

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A scenario of the evolution of the shape of nucleons with increasing energy is described in the framework of an extended parton model, which consistently takes into account the transverse motion of the partons. At the energy E up to LHC, the nucleons have the form of a spheroid which expands as lnE in the transverse directions and grows linearly in E in the longitudinal direction. With a further increase in the energy, a mode of correlated behavior of the partons is established, which stops the longitudinal growth. Simultaneously, the expansion in the transverse directions changes to lnE, and a hollow mostly free of partons is formed inside the nucleons along the central axis in the direction of their motion. Numerical estimates of the corresponding parameters are obtained.

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The multilayer structure of protons

Cited by 14 publications

References 19 publications

Analytical representation for amplitudes and differential cross section of pp elastic scattering at 13 TeV

Analytical representation for amplitudes and differential cross section of pp elastic scattering at 13 TeV

Strong QCD from Hadron Structure Experiments

On the Shape of Nucleons at High Energies

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