Example of an Antiproton-Nucleon Annihilation

Chamberlain, O.; Chupp, Warren W.; Ekspong, A.G.; Goldhaber, G.; Goldhaber, Sulamith; Lofgren, E.J.; Segrè, E.; Wiegand, C.; Amaldi, E.; Baroni, G.; Castagnoli, C.; Franzinetti, C.; Manfredini, A.

doi:10.1103/physrev.102.921

Cited by 25 publications

(9 citation statements)

References 3 publications

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“…Another surprise came with the rst measurement of antiproton cross-sections [7]. The annihilation part is much larger than the elastic one for low antiproton momenta.…”

Section: From the Dirac Equation To The Discovery Of The Antiprotonmentioning

confidence: 99%

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Antinucleon–nucleon interaction at low energy: scattering and protonium

et al. 2002

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“…Another surprise came with the rst measurement of antiproton cross-sections [7]. The annihilation part is much larger than the elastic one for low antiproton momenta.…”

Section: From the Dirac Equation To The Discovery Of The Antiprotonmentioning

confidence: 99%

“…The striking surprise was [7] that the total antiproton cross-section on matter is very large (as compared to the proton one), and that more than half of this cross-section is due to annihilation. This annihilation cross-section ann cannot be understood from a simple S-wave correction.…”

Section: The Range Of Annihilation and Early Optical Modelsmentioning

confidence: 99%

Antinucleon–nucleon interaction at low energy: scattering and protonium

et al. 2002

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“…Initially the effort was mainly directed toward estabjishing the fact that the energy released was 2mc2, thus furnishing a final proof of the annihilation. In the early investigations with photographic emulsions carried out in my group (especially by Gerson Goldhaber) and by a group in Rome led by Amaldi, we soon found stars showing a visible energy larger than mc' (m is the mass of the proton, c the velocity of light), giving conclusive evidence of the annihilation in pairs of proton and antiproton (11 ).…”

Section: Collision Cross Sectionsmentioning

confidence: 95%

Nuclear Properties of Antinucleons

Segrè

1960

Science

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“…[and] Even then, the 'golden' annihilation event which came somewhat later from the emulsion experiment [12] seems to have been taken as the conclusive evidence for the antiproton. [and] Even then, the 'golden' annihilation event which came somewhat later from the emulsion experiment [12] seems to have been taken as the conclusive evidence for the antiproton.…”

Section: Gösta Ekspong Private Communicationmentioning

confidence: 99%

“…Incidentally the event from reference [12], as sketched by Gerson Goldhaber, was reproduced in TIME magazine on Feb 13 of the following year. Incidentally the event from reference [12], as sketched by Gerson Goldhaber, was reproduced in TIME magazine on Feb 13 of the following year.…”

Section: Perkins Private Communicationmentioning

confidence: 99%

The Antiproton and How It Was Discovered

Eades¹

2005

AIP Conference Proceedings

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The antiproton celebrates its 50th birthday this year. Although its existence had been suspected since the discovery of the positron in 1932, there was still doubt in some quarters that such a companion particle to the proton could exist. I will try to trace the scientific history of the antiproton from that time to the publication of the definitive paper by Chamberlain, Segrè, Wiegand and Ypsilantis in November 1955, with a brief look at what happened next. The narrative will be supplemented with thoughts and opinions of some of the main actors, both at the time and in retrospect.

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Example of an Antiproton-Nucleon Annihilation

Cited by 25 publications

References 3 publications

Antinucleon–nucleon interaction at low energy: scattering and protonium

Antinucleon–nucleon interaction at low energy: scattering and protonium

Nuclear Properties of Antinucleons

The Antiproton and How It Was Discovered

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