Comment on Double-Scattering Effect in Deuteron Breakup Reactions

Alberi, G.; Rosa, Luiz Pinguelli; Thome, Z.

doi:10.1103/physrevlett.34.503

Cited by 48 publications

(20 citation statements)

References 10 publications

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“…Using the experimental data on the total cross section σ N N →K + ΛN [10] we estimated here the squared amplitude |A 3 (pN → NΛK + )| 2 as ∼ 250 ÷ 450GeV −2 in the initial proton energy range 1.6 − 3.0 GeV . The numerical calculations for the two-step mechanism are performed in the s-wave approximation for the deuteron wave function [9]. ( As was shown by our calculations, the contribution of the deuteron D-component to the cross section is about 10 %).…”

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confidence: 99%

“…One should note that integral (6) has a meaning of the deuteron elastic formfactor The one-step amplitude has been numericaly calculated here using both S− and D−components of the deuteron wave function for the RSC potential in parametrisation [9]. Using the experimental data on the total cross section σ N N →K + ΛN [10] we estimated here the squared amplitude |A 3 (pN → NΛK + )| 2 as ∼ 250 ÷ 450GeV −2 in the initial proton energy range 1.6 − 3.0 GeV .…”

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confidence: 99%

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The pd to³H_LambdaK⁺reaction cross section

Komarov¹,

Lado²,

Uzikov³

1995

J. Phys. G: Nucl. Part. Phys.

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The one-and two-step mechanisms of the pd → 3 H Λ K + reaction in the range of incident proton kinetic energy T p = 1.13 − 3.0 GeV have been investigated for the first time. A remarkable peculiarity of the two-step mechanism which incorporates subprocesses pp → dπ + and π + n → K + Λ is the so called velocity matching providing the presence of all intermediate particles nearly to the on-mass-shell. The differential cross section has been calculated using a realistic model for the hypertritium 3 H Λ wave function. The maximum value of the cross section is estimated as ∼1nb/sr. The contribution of the one-step mechanism with the elementary process pN → NKΛ into the cross section has been found to be two -three orders of magnitude smaller in comparison with the two-step mechanism.

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confidence: 99%

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confidence: 99%

The pd to³H_LambdaK⁺reaction cross section

Komarov¹,

Lado²,

Uzikov³

1995

J. Phys. G: Nucl. Part. Phys.

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“…Probably, the remaining discrepancy is caused by an uncertainty of the parametrization of the deuteron-wave function from [15].…”

Section: Discussionmentioning

confidence: 96%

“…By the dashed line in Fig. 4 we show the deuteron-wave function from [15]. Since the deuteron contains a high-momentum component of about 5% (q > 0.2 GeV/c), the overlapping of the tail of the deuteron-wave function with the neutron-proton density function may contribute roughly a fraction of 0.05 • 0.4 to the total deuteron yield.…”

Section: Proposed Deuteron Studiesmentioning

confidence: 98%

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Fast deuteron production in proton-nucleus interactions

Büscher

Sibirtsev

Sistemich

1994

Z. Physik A - Hadrons and Nuclei

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Abstract. Deuteron formation in proton-nucleus reactions due to the coalescence mechanism with final-state interaction between nucleons is discussed in order to establish the kinematical region of the validity of this approach. The experimental data on fast deuteron production in proton-nucleus collisions at bombarding energies above 3 GeV are analyzed. It is shown that most experimental results were obtained for deuteron momenta below the critical limit of the coalescence model. It is discussed to which extent further experimental studies could help to identify contributions from the coalescence mechanism and to get better understanding of the fast deuteron-production process.

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