Antiproton-deuteron low-energy cross-sections

Bizzarri, R.; Guidoni, P.; Marcelja, F.; Marzano, Frank S.; Castelli, E.; Sessa, M.

doi:10.1007/bf02813436

Cited by 90 publications

(47 citation statements)

References 19 publications

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“…In singlet states it is close to 0.6 whereas in triplet states it exceeds 1. The measurements by Bugg et al [7] show that this ratio is close to 0.65 in case of the nucleus 12 C. Other authors [8] give us an imaginary potential ratio the value ∼ 80%. In the paper by Kalogeropoulos and Tzanakos [9], one can find a similar value σ(pn)/σ(pp) = 3/4 as measured in deuterium.…”

Section: A Halo Factormentioning

confidence: 73%

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Neutron halos in heavy nuclei-relativistic mean field approach

Baran

Pomorski

Warda

1997

Z Phys A - Particles and Fields

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Assuming a simple spherical relativistic mean field model of the nucleus, we estimate the width of the antiproton-neutron annihilation (Γ n ) and the width of antiproton-proton (Γ p ) annihilation, in an antiprotonic atom system. This allows us to determine the halo factor f , which is then discussed in the context of experimental data obtained in measurements recently done on LEAR utility at CERN. Another quantity which characterizes the deviation of the average nuclear densities ratio from the corresponding ratio of the homogeneous densities is introduced too. It was shown that it is also a good indicator of the neutron halo. The results are compared to experimental data as well as to the data of the simple liquid droplet model of the nuclear densities. The single particle structure of the nuclear density tail is discusssed also.

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Section: A Halo Factormentioning

confidence: 73%

“…The summation run through all the antiprotonic atomic states for which one expects the large annihilation widths. Usually it is assumed that only one state with (n, l) ranging from (6,5) for Ni nucleus to (9,8) to U nucleus contributes to these widths [4]. In the present calculation we sum a few (three to five) states only.…”

Section: A Halo Factormentioning

confidence: 99%

Neutron halos in heavy nuclei-relativistic mean field approach

Baran

Pomorski

Warda

1997

Z Phys A - Particles and Fields

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“…The data of Bizzari et al [3] was not included in our analysis as the data was strongly contaminated with non-elastic processes including breakup. The deuteron form factors S o (q) and S 2 (q) were obtained from Paris wave functions and the p-p scattering amplitude parameters were fixed from the experimental data as mentioned in the previous …”

Section: Resultsmentioning

confidence: 99%

“…Hot,-ever, the elementary p-n interaction cannot be measured directly. The information on p-n interaction has been obtained so far from analyses of p-deuteron [3][4][5] and pnucleus scattering [6][7][8] data using Glauber's multiple scattering theory.…”

Section: Introductionmentioning

confidence: 99%

Determination of antiproton-neutron amplitude from elastic�p-deuteron scattering at 600 MeV/c

Mahalanabis

1992

Z. Physik A - Hadrons and Nuclei

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“…Systematic measurements were performed at LEAR in the 80's and 90's with antiprotons (p) [1][2][3][4][5][6][7][8][9][10][11][12][13] and antineutrons (n) [14][15][16][17][18][19] at energies below 50 MeV and also with antiprotonic atoms (see [20]). Recently the ASACUSA Collaboration has measured the annihilation cross section (σ ann ) of antiprotons at the Antiproton Decelerator (AD) of CERN [21,22] at 5.3 MeV on medium and medium-heavy targets (Ni, Sn, Pt) [23].…”

Section: Introductionmentioning

confidence: 99%

Antiproton-nucleus annihilation cross section at low energy

et al. 2018

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Abstract. The antinucleon-nuclei annihilation cross sections at low energies were systematically measured at CERN in the 80's and 90's with the LEAR facility and later with the Antiproton Decelerator. Unfortunately only few data exist for very low energy antiprotons (p<500 MeV/c) on medium and heavy nuclei. A deeper knowledge is required by fundamental physics and can have consequence also in cosmology and medical physics. In order to fill the gap, the ASACUSA Collaboration has very recently measured the annihilation cross section of 100 MeV/c antiprotons on carbon. In the present work the experimental result is presented together with a comparison both with the antineutron data on the same target at the same energies and with the other existing antiproton data at higher energies.

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Antiproton-deuteron low-energy cross-sections

Cited by 90 publications

References 19 publications

Neutron halos in heavy nuclei-relativistic mean field approach

Neutron halos in heavy nuclei-relativistic mean field approach

Determination of antiproton-neutron amplitude from elastic�p-deuteron scattering at 600 MeV/c

Antiproton-nucleus annihilation cross section at low energy

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