Real Part of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo>−</mml:mo><mml:mi>p</mml:mi></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo>−</mml:mo><mml:mi>d</mml:mi></mml:math>, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo>−</mml:mo><mml:mi>n</mml:mi></mml:math>Forward Scattering Amplitudes from 50 to 400 GeV

Gross, D.; Jenkins, E. W.; Kuznetsov, A.; Maramud, E.; Morozov, B.; Никитин, В. А.; Nomokonov, P.; Pilipenko, Yu.K.; Sandacz, A.; Смирнов, В. И.; Yamada, R.

doi:10.1103/physrevlett.41.217

Cited by 64 publications

(48 citation statements)

References 33 publications

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“…Experiments from Refs. [53][54][55] instance at E lab = 240 GeV, σ tot = 73.77 ± 0.4 mb, to be compared with the experimental value 74.42 ± 0.53 mb [52] This result confirms that our basic Fermi interaction between quarks obtained in the elastic proton case, where we have a system made of 4u + 2d, remains valid for this light nucleus scattering where now it contains 5u + 4d. …”

Section: The P D Elastic Scatteringsupporting

confidence: 69%

“…The experimental data [53][54][55] cover the energy range 40 ≤ p lab ≤ 397 GeV and the momentum transfer range 0.00077 ≤ |t| ≤ 0.2435 GeV 2 [53][54][55]. Of course, the energy domain is more limited than in the p p reaction, and the momentum transfer covers only low |t| values; nevertheless, we find it interesting to check the validity of our assumption on the universality of the thermodynamical potentials in this case.…”

Section: The P D Elastic Scatteringmentioning

confidence: 99%

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An analysis of elastic scattering reactions with a Fermi–Dirac pomeron opaqueness in impact parameter space

Bourrely

2014

Eur. Phys. J. C

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In the Bourrely-Soffer-Wu model we introduce for the pomeron a new opaqueness in impact parameter space in terms of different quark contributions described by a Fermi-Dirac distribution. In order to check the validity of this assumption we consider p p,p p, and π ± p elastic scattering. We emphasize the role of the gluon above the diffraction peak in the differential cross sections. Once these contributions are determined we extend the model to light nuclei elastic reactions like p d, p 4 He and π ± 4 He. The results obtained show a good description of all these elastic processes over the available experimental energy range and moderate momentum transfer.

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Section: The P D Elastic Scatteringsupporting

confidence: 69%

Section: The P D Elastic Scatteringmentioning

confidence: 99%

An analysis of elastic scattering reactions with a Fermi–Dirac pomeron opaqueness in impact parameter space

Bourrely

2014

Eur. Phys. J. C

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“…(5) and diminishes the above estimates of ρ 0 . It is especially large in the models [3,11,12], where it exceeds even the minimum of the cross section at tens of GeV, comparatively small in [10,14,15,16], and is absent in [17].…”

mentioning

confidence: 99%

“…The old version [11] predicts too high value of 127 mb for the total cross section at 7 TeV. It has been used in extrapolation 4 of [2], and gave rise to a maximum and then to somewhat faster decrease of ρ 0 with energy but its values are still a little bit large.…”

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confidence: 99%

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Interplay of total cross sections and ratios of real to imaginary parts of hadron amplitudes

Dremin

2013

Jetp Lett.

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The impact of different assumptions about high energy behavior of the total cross section of proton-proton interactions on the ratio of the real to imaginary part of the forward elastic scattering amplitude is analyzed. It is shown how experimental data about this ratio at LHC energies can help in the proper choice of the asymptotic dependence of the total cross section.The total cross sections and the ratios of real to imaginary parts of forward scattering amplitudes are tightly connected by dispersion relations. Hence, both of them should be analyzed simultaneously. We consider the interrelation of their behaviors as functions of energy discussing how different assumptions about the energy dependence of the total cross section σ t influence the predictions of the values of the ratiowhere A(s, t) is the elastic scattering amplitude at energy √ s and transferred momentum t. In its turn, this ratio measured at LHC can give some hints to the proper choice of the asymptotic behavior of the total cross section.Experimentally, this ratio is determined from the interference of the Coulomb and nuclear parts of the amplitude at extremely small angles. It is negative at comparatively low energies, becomes positive at energies √ s exceeding tens of GeV, and increases at ISR. These features are well reproduced by dispersion relations. The total cross sections of hadron processes rise with energy increase. This surprising fact was first noticed in kaon-proton interactions in Protvino [1]. Later, it was confirmed at ISR, SppS, and Tevatron. Nowadays, with advent of LHC, it has obtained further support.

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Null SuperP-Branes Quantum Theory in 4-Dimensional Space-Time

Bandos¹,

Желтухин²

1993

Fortschr. Phys.

103

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A twistor-like harmonic formulation of the theory of extended supersymmetrical null objects is suggested. A new harmonic form of the action for null super string and null supermembrane with N-extended global SUSY in 4-dimensional space-time is built. A way for a covariant quantization of null super p-branes is suggested. This way unifies the harmonic approach and the BRST-BFV quantization method modified by the idea of the conversion of the second class constraints into the effective first class ones. The absence of anomalies and the quantum selfconsistency of null super p-branes, including null super membranes ( p = 2), null superstrings ( p = 1) and massless superparticle ( p = 0) in 4-dimensional space-time are proved.For the completeness the BRST-BFV quantization of null p-brane is discussed too. The BRST-BFV quantization method is described in details using the simple example of massless particle theory.

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Real Part of thep−p,p−d, andp−nForward Scattering Amplitudes from 50 to 400 GeV

Cited by 64 publications

References 33 publications

An analysis of elastic scattering reactions with a Fermi–Dirac pomeron opaqueness in impact parameter space

An analysis of elastic scattering reactions with a Fermi–Dirac pomeron opaqueness in impact parameter space

Interplay of total cross sections and ratios of real to imaginary parts of hadron amplitudes

Null SuperP-Branes Quantum Theory in 4-Dimensional Space-Time

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