High-Energy Proton Scattering and the Structure of Light Nuclei

Bassel, R.H.; Wilkin, C.

doi:10.1103/physrev.174.1179

Cited by 247 publications

(76 citation statements)

References 31 publications

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“…The oscillatory diffractive trend of S D α at large angles is reminiscent of the angular distribution for proton-nucleus scattering [9]. Thus, the natural interpretation is that the ejected proton is testing coherently the residual nucleus.…”

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confidence: 96%

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A test of the eikonal approximation in high-energy (e,e′p) scattering

Bianconi

Radici

1995

Physics Letters B

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The Glauber method is extensively used to describe the motion of a hadronic projectile in interaction with the surrounding nuclear medium. One of the main approximations consists in the linearization of the wave equation for the interacting particle. We have studied the consequences of such an assumption in the case of the 12 C(e, e ′ p) 11 B * reaction at high proton momenta by comparing the results with the predictions obtained when all the ingredients of the calculation are unchanged but the second-order differential equation for the scattered wave, which is solved exactly for each partial wave up to a maximum of 120 spherical harmonics. We find that the Glauber cross section is always larger by a factor 10 ÷ 20%, even at vanishing missing momenta. We give a quantum-mechanical explanation of this discrepancy. Nevertheless, a good correlation is found between the two predictions as functions of the missing momentum, especially in parallel kinematics.The problem of the validity of the Glauber approximation [1] in (e,e ′ p) scattering from finite nuclei is receiving more and more interest in relation with the experiments planned at CEBAF, where the proton momentum can be larger than 1 ÷ 2 GeV/c. At large missing momenta of the recoil the details of the short-range nucleon-nucleon interaction are expected to show up [2], but the few experimental data available [3] still prevent from putting stringent constraints on the theoretical models. On the other side, at moderate missing momenta an accuracy within 10% is required to unambigously identify exotic effects like Colour Transparency, if any [4].The recent NE18 experiment [5] has shown that calculations based on the standard Glauber approximation overestimate the cross section even at vanishing missing momenta, unless some phenomenological corrections are introduced. Various suggestions have been made both on the way of analyzing the NE18 data [6,7] and on how to improve the Glauber method [8]. Starting from a different point of view, we show that the latter is affected by an intrinsic systematical error, which can be relevant at the kinematics 1

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confidence: 96%

“…Traditionally, the Glauber method has been extensively used in the analysis of the proton-nucleus scattering data [9,10], where it gives good, or at least some of the best available, fits to the scattering distributions. However, the generalization to the (e,e ′ p) reaction is not straightforward.…”

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confidence: 99%

A test of the eikonal approximation in high-energy (e,e′p) scattering

Bianconi

Radici

1995

Physics Letters B

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“…Every attempt to extract some information concerning these effects from data will have (in part) the phenomenology. Although the Glauber theory [7] was developed initially for high-energy projectiles, yet it is also employed at medium energies successfully [8,9].…”

Section: Glauber Modelmentioning

confidence: 99%

“…Also, one needs to point to the fact that the 28 S i nucleus is significantly clustered. Details of the nuclear structure is important for calculating differential cross sections [9]. In the report, we calculate only the total cross sections (see figure 2), and in this case it is necessary to know only the average density distribution of the nucleus [7,8].…”

Section: Glauber Modelmentioning

confidence: 99%

Probing the low and high density nuclear matter by hadron scattering

Eliseev

Kosmachev

2017

EPJ Web Conf.

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Abstract. The subject of this report is connected with the widely discussed manifestation of in-medium effect in nuclear collisions. At present, the medium modification of hadron properties in the normal and in a dense nuclear matter is one of the fundamental questions of strong interaction physics. A new Glauber Monte Carlo model for hadron-nuclei interaction at intermediate energy is proposed. We utilized the principal assumptions as in the approaches of other authors describing nuclear collisions at high energy in the framework of the models without QGP. Yet, a number of new ingredients (noneikonal corrections, correlations of nucleons, in the nuclei, the nuclear Fermi motion, etc.) are introduced.

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“…The preliminary applications of GMST were found to have great successes in reproducing the hadron-nucleus scattering data [36][37][38][39][40][41][42][43][44]. The confidence in this theory encouraged the extension of its application to nucleus-nucleus collisions [45][46][47][48][49][50][51][52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Multiple scattering theory for pion-nucleus elastic scattering and the in-medium piN amplitude

Shalaby¹,

Hassan²,

El-Gogary³

2007

Braz. J. Phys.

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Elastic scattering of positive and/or negative pions (π + and/or π − ) by nuclei has been studied by means of Glauber's multiple scattering theory (GMST). The differential, total and total elastic cross sections using both the full series expansion and the first order correction (called optical limit results, OLA) of the Glauber amplitude, have been calculated. The in-medium πN amplitude (σ e f f . , σ e f f . ) as well as the free πN one (σ f ree , σ f ree ) are invoked into the full series calculations of the Glauber amplitude and our results were compared with the corresponding experimental data. These calculations are carried out for the elastic collisions, π − − 2 He 4 at incident energy 180 MeV, π ± − 3 Li 6 at 240 MeV, π − − 6 C 12 at incident energies 180, 200 and 260 MeV, π + − 8 O 16 at 240 and 270 MeV and π ± − 20 Ca 40 at energy 292.5 MeV. The comparisons reflect that, except around the minima, the full series calculations with the in-medium πN amplitude are better in describing the scattering data than those using the free πN one and both are better than the optical limit results.

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High-Energy Proton Scattering and the Structure of Light Nuclei

Cited by 247 publications

References 31 publications

A test of the eikonal approximation in high-energy (e,e′p) scattering

A test of the eikonal approximation in high-energy (e,e′p) scattering

Probing the low and high density nuclear matter by hadron scattering

Multiple scattering theory for pion-nucleus elastic scattering and the in-medium piN amplitude

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