Antiproton-neon annihilation at rest and at 607 MeV/c

Balestra, F.; Bossolasco, S.; Bussa, M. P.; Busso, L.; Ferrero, L.; Panzieri, D.; Piragino, G.; Tosello, F.; Barbieri, Riccardo; Bendiscioli, G.; Rotondi, A.; Salvini, P.; Zenoni, A.; Batusov, Yu.A.; Falomkin, I.V.; Pontecorvo, G. B.; Sapozhnikov, M. G.; Tretyak, V.I.; Guaraldo, C.; Maggiora, A.; Rizzini, E. Lodi; Haatuft, A.; Halsteinslid, A.; Myklebost, K.; Olsen, J.; Breivik, F.O.; Jacobsen, T.; Sørensen, S.O.

doi:10.1016/0375-9474(89)90517-4

Cited by 24 publications

(12 citation statements)

References 45 publications

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“…To analyse the case of pions decaying in flight with higher momenta, we calculated the kinematic parameters of the π→µν µ decay for a pion momen- Table 2. tum of 200 MeV/c and neutrino mass of 0.300 keV. This value of the pion momentum has been choosen because, at the JINR Phasotron, the DUBTO experiment [13] studying pion interactions with 4 He nuclei at 200 MeV/c, collected several π→µν µ events. In this case the allowed values of the φ angle are less than 11 deg.…”

Section: Analysis Of the Resultsmentioning

confidence: 99%

“…It represents a multi-nucleon annihilation [4] of an antiproton with a Ne nucleus (see, also, Figure 11 of ref. [3]).…”

Section: Analysis Of the Measurementsmentioning

confidence: 99%

“…3 He, 4 He, Ne. The stereo pictures of events, recorded on films during the runs, were reprojected onto measuring tables for visual scanning.…”

Section: Analysis Of the Measurementsmentioning

confidence: 99%

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On the muon neutrino mass

et al. 2006

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Section: Analysis Of the Resultsmentioning

confidence: 99%

“…It represents a multi-nucleon annihilation [4] of an antiproton with a Ne nucleus (see, also, Figure 11 of ref. [3]).…”

Section: Analysis Of the Measurementsmentioning

confidence: 99%

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On the muon neutrino mass

et al. 2006

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“…Results from in-flight interactions, which probe higher density regions of the nucleus prior to annihilation, have been published for these same elements by McGaughey et al [6]. Results following antiproton annihilation at rest in other nuclei have been published for 2~ [7], for 4~ 63Cu, and 92'98Mo [5], and for 14N and 2H gases [8]. From a phenomenologicai point of view, proton spectra at rest and in flight have considerable significance.…”

Section: Introductionmentioning

confidence: 93%

Multinucleon phenomena and proton spectra characterizing antiproton annihilation at rest in nuclei

Minor

Armstrong

Chen

et al. 1992

Z. Physik A - Hadrons and Nuclei

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Spectra of protons with momenta greater than 500 MeV/c following antiproton annihilation at rest in carbon and uranium nuclei have been measured. They are compared to recent results from other experiments and to predictions of an intranuclear cascade model. Evidence is presented for a substantial B > 0 component in the annihilation process, and an estimate of the magnitude of that component is made.

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“…IV F). from low-energy capture in He [58], while the best fit optical potential requires R ≈ 1 [10]. This discrepancy is resolved if one realizes that capture in He involves mostly S waves, and capture from high angular momentum states in heavier nuclei involves mostly P (or higher) waves in the NN system [59].…”

Section: F Interpolated Halo Factormentioning

confidence: 99%

Neutron density distributions from antiprotonicPb208andBi209

Kłos¹,

et al. 2007

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The x-ray cascade from antiprotonic atoms was studied for 208 Pb and 209 Bi. Widths and shifts of the levels due to the strong interaction were determined. Using modern antiproton-nucleus optical potentials, the neutron densities in the nuclear periphery were deduced. Assuming two-parameter Fermi distributions (2pF) describing the proton and neutron densities, the neutron rms radii were deduced for both nuclei. The difference of neutron and proton rms radii r np equal to 0.16 ± (0.02) stat ± (0.04) syst fm for 208 Pb and 0.14 ± (0.04) stat ± (0.04) syst fm for 209 Bi were determined, and the assigned systematic errors are discussed. The r np values and the deduced shapes of the neutron distributions are compared with mean field model calculations.

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Antiproton-neon annihilation at rest and at 607 MeV/c

Cited by 24 publications

References 45 publications

On the muon neutrino mass

On the muon neutrino mass

Multinucleon phenomena and proton spectra characterizing antiproton annihilation at rest in nuclei

Neutron density distributions from antiprotonicPb208andBi209

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