The pBARp annihilation cross-sections at 66.4-68.9-71.4 MeV/c have been measured using the presently instrumented part of the OBELIX spectrometer. The results have been obtained at pBAR energies (almost-equal-to 2.5 MeV) by one order of magnitude smaller than in any existing experiment concerning the in-flight antiproton-proton annihilation. The branching ratios for the annihilations in two, four and six charged mesons turn out to be quite similar to those for annihilation at rest in liquid hydrogen.

Measurement of the annihilation cross-sections at very low energies

MARGAGLIOTTI, GIACOMO;
1991-01-01

Abstract

The pBARp annihilation cross-sections at 66.4-68.9-71.4 MeV/c have been measured using the presently instrumented part of the OBELIX spectrometer. The results have been obtained at pBAR energies (almost-equal-to 2.5 MeV) by one order of magnitude smaller than in any existing experiment concerning the in-flight antiproton-proton annihilation. The branching ratios for the annihilations in two, four and six charged mesons turn out to be quite similar to those for annihilation at rest in liquid hydrogen.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2634852
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