Total elastic p-p, p-d, p-n cross sections in the energy range of 1-70 GeV

Beznogikh, G.G.; Bujak, A.; Никитин, В. А.; Shafranova, M.G.; Sviridov, V.A.; Bien, Truong; Vikhlyantseva, L.V.; Zayachki, V.I.; Zolin, L.

doi:10.1016/0370-2693(73)90550-9

Cited by 55 publications

(5 citation statements)

References 8 publications

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“…The values of T o are in good agreement with the results of paper [4] in which carbon fragmentation induced by relativistic deuterons and or-particles has been studied. This observation confirms the hypothesis of T o independence of target-nucleus, the type of beam and incident energy up to 400 GeV per nucleon.…”

Section: Experimental Results and Their Discussionsupporting

confidence: 80%

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4He fragmentation induced by 46–400 GeV Protons

et al. 1985

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Inclusive p, d and 3He cross sections have been obtained using experimental data on p4He collisions over an incident proton energy range of 46-400 GeV. Considering the slopes of spectra, the effective nuclear temperature has been found to be T o = 11 MeV, which is in good agreement with experimental results for lower energies and heavier targets. The shape of the 3He inclusive spectrum suggests the existence of two different 3He production mechanisms. The experimental 3He cross section is compared with theoretical predictions assuming fragment formation as a result of the spectator and cluster knockout mechanisms. The 4He ~ 3He + n vertex constant has been found to be G2 = 10.9+0.2 fro.

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Section: Experimental Results and Their Discussionsupporting

confidence: 80%

“…2b). Separately these mechanisms have been considered in papers [5,6] as applied to the p+4He--*SHe+n+p re- (4) where Q is the 3He momentum, E the 3He kinetic energy and M 3 the 3He mass. All quantities are considered in the lab.…”

Section: Experimental Results and Their Discussionmentioning

confidence: 99%

4He fragmentation induced by 46–400 GeV Protons

et al. 1985

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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: 77%

“…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: 85%

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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“…5. Selected elastic slope [10] and multiplicity [11] data, showing that they are not proportional, contrary to the prediction of the multiperipheral model. The MPM predicts proportional straight lines for each of these.…”

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confidence: 99%

Longitudinal momentum transfers in the multiperipheral model

Henyey

1974

Nuclear Physics B

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The inclusion of longitudinal momentum transfers in the multiperipheral model is investigated. As recently pointed out by Jadach and Turnau, these longitudinal momentum transfers, if present, have a very large effect on properties of the model. In this paper we find that data rules out such effects. Furthermore, if the longitudinal momentum effects were present, they would in no way solve the serious problem with the multiperipheral model, that average multiplicity and elastic slope ought to be proportional, but experimentally are not. A multiperipheral model using transverse momentum transfers has fewer phenomenological difficulties than one using total momentum transfer. A powerful constraint on multiparticle models is the requirement that the model simultaneously fit relevant aspects of both multiparticle and elastic data; the elastic scattering is Calculated by unitarity. The multiperipheral model has a serious difficulty with this constraint. In this paper the effect of longitudinal momentum transfers is investigated, and two main conclusions are reached: (i) Longitudinal momentum transfers do not help solve the difficulty. (ii) Multiparticle data rules out using the entire momentum transfer, but is consistent with using only the transverse part, as the main variable on which the amplitude depends. Recently, Jadach and Turnau [1] pointed out a feature of some versions of the multiperipheral model (MPM) which had been overlooked in several recent discussions of the MPM [2-4]. This feature is that the longitudinal momentum transfers provide the transverse momentum cutoff in these versions. In the present paper, this feature isexptored from both theoretical and experimental viewpoints. Several points are to be stressed: the phenomenon described by Jadach and Turnau involves a rapid dependence of average transverse momentum on rapidity gap, which can easily be tested experimentally; it is found that there is almost no effect. Even if there were an effect, the random walk description of the MPM would retain its validity. In particular, some peculiar features of the CLA [5] model are * Research supported in part by the US Atomic Energy Commission.

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Total elastic p-p, p-d, p-n cross sections in the energy range of 1-70 GeV

Cited by 55 publications

References 8 publications

4He fragmentation induced by 46–400 GeV Protons

4He fragmentation induced by 46–400 GeV Protons

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

Longitudinal momentum transfers in the multiperipheral model

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