Absorption and Forward Scattering of Antiprotons by C, Al, and Cu Nuclei in the Region 470-880 MeV/<i>c</i>

Nakamura, K.; Chiba, J.; Fujii, T.; Iwasaki, H.; Kageyama, T.; Kuribayashi, S.; Sumiyoshi, T.; Takeda, Takahito; Ikeda, Hirokazu; Takada, Yoshihisa

doi:10.1103/physrevlett.52.731

Cited by 108 publications

(53 citation statements)

References 11 publications

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“…15 for several values of ξ. As one can see, ξ = 0.2-0.3 leads to good agreement with KEK data [177] at p lab = 470-880 MeV/c. If one defines the real part of the 238 U p Figure 17: (Color online) π + -and proton-laboratory rapidity spectra from antiproton interaction with 12 C and 238 U at 608 MeV/c.…”

Section: Antiproton-induced Reactionssupporting

confidence: 72%

“…The p scattering and absorption on nuclei is a direct way to access the p-nucleus optical potential. Such experiments have been performed at LEAR [175,176] and KEK [177] in the early 80's. Their optical model analysis has led to the conclusion that the antiproton-nucleus optical potential is moderately attractive (Re(V opt ) = −(0-70) MeV) and strongly absorptive (Im(V opt ) = (2-3)Re(V opt )).…”

Section: Antiproton-induced Reactionsmentioning

confidence: 99%

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Transport-theoretical description of nuclear reactions

et al. 2012

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In this review we first outline the basics of transport theory and its recent generalization to offshell transport. We then present in some detail the main ingredients of any transport method using in particular the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) implementation of this theory as an example. We discuss the potentials used, the ground state initialization and the collision term, including the in-medium modifications of the latter. The central part of this review covers applications of GiBUU to a wide class of reactions, starting from pion-induced reactions over proton and antiproton reactions on nuclei to heavy-ion collisions (up to about 30 AGeV). A major part concerns also the description of photon-, electron-and neutrino-induced reactions (in the energy range from a few 100 MeV to a few 100 GeV). For this wide class of reactions GiBUU gives an excellent description with the same physics input and the same code being used. We argue that GiBUU is an indispensable tool for any investigation of nuclear reactions in which final-state interactions play a role. Studies of pion-nucleus interactions, nuclear fragmentation, heavy-ion reactions, hypernucleus formation, hadronization, color transparency, electronnucleus collisions and neutrino-nucleus interactions are all possible applications of GiBUU and are discussed in this article.

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Section: Antiproton-induced Reactionssupporting

confidence: 72%

Section: Antiproton-induced Reactionsmentioning

confidence: 99%

Transport-theoretical description of nuclear reactions

et al. 2012

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“…10 the empirical values of σ R , which are taken from the absorption cross section data. 72,76,77) From this figure, we find that even in the reactions involving antiprotons, the values of σ BS are consistent with the empirical values of σ R within the uncertainties although the values of σ R are rather scattered in the region of low incident energies. These results support the relevance of the BS picture for antiprotons, while the analyses of the data for other hadronic probes are in progress.…”

Section: Other Probessupporting

confidence: 75%

Energy and Mass-Number Dependence of Hadron–Nucleus Total Reaction Cross Sections

2016

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We thoroughly investigate how proton-nucleus total reaction cross sections depend on the target mass number A and the proton incident energy. In doing so, we systematically analyze nuclear reaction data that are sensitive to nuclear size, namely, proton-nucleus total reaction cross sections and differential elastic cross sections, using a phenomenological black-sphere approximation of nuclei that we are developing. In this framework, the radius of the black sphere is found to be a useful length scale that simultaneously accounts for the observed proton-nucleus total reaction cross section and first diffraction peak in the proton elastic differential cross section. This framework, which is shown here to be applicable to antiprotons, is expected to be applicable to any kind of projectile that is strongly attenuated in the nucleus. On the basis of a cross-section formula constructed within this framework, we find that a less familiar A 1/6 dependence plays a crucial role in describing the energy dependence of proton-nucleus total reaction cross sections.

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“…Fig. 2b presents the obtained result superimposed to the existingp andn annihilation data on carbon [1,7] and calculation from [2]. The total error can be reduced from ∼15% to ∼10% by implementing a better synchronization in the detector data.…”

Section: Resultsmentioning

confidence: 83%

New results of the antiproton-carbon annihilation cross section measurement at low energies

et al. 2016

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Abstract. The antinucleon-nuclei annihilation cross section at very low energy has been measured at the LEAR facility (CERN) during the 80's and 90's and recently at the Antiproton Decelerator. The results have raised some interesting questions that still need answers. The ASACUSA collaboration performed an experiment to measure the σ ann of 100 MeV/c antiprotons on carbon target and the preliminary results are presented here.

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Absorption and Forward Scattering of Antiprotons by C, Al, and Cu Nuclei in the Region 470-880 MeV/c

Cited by 108 publications

References 11 publications

Transport-theoretical description of nuclear reactions

Transport-theoretical description of nuclear reactions

Energy and Mass-Number Dependence of Hadron–Nucleus Total Reaction Cross Sections

New results of the antiproton-carbon annihilation cross section measurement at low energies

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