Agnew, L.; Elioff, T.; Fowler, W.B.; Gilly, L.; Lander, R.; Oswald, L.; Powell, W.M.; Segrè, E.; Steiner, H.; White, H.; Wiegand, C.; Ypsilantis, T.; anti-p p Elastic and Charge Exchange Scattering at About 120 MeV
Phys. Rev. 110 (1958) 994;
Summary
We have observed 478 antiprotons entering the chamber. One such event is shown. The complete analysis of these events is in progress; however, a preliminary report on the anti-p p elastic scattering is now available. A total of 33 anti-p p elastic collisions have been observed over a path length of 179 meters. The scatterings occur between 30 and 215 MeV with an average energy of 120 MeV. Only anti-p-p scatterings with angles > 7.5° (lab) were identifiable because
otherwise the energy of the recoil proton was too small to make a visible track, so that these scatterings are indistinguishable from anti-p C. (Extracted from the introductory part of the paper.).
Accelerator
LBL
Detectors HLBC-30IN
Related references See also J. S. Ball and G. F. Chew, Phys. Rev. 109 (1958) 1385;
J. R. Fulco, Phys. Rev. 110 (1958) 784;
Reactions
anti-p p p anti-p
.12 GeV (Tlab)
cs, angp
anti-p p n anti-n
.12 GeV (Tlab)
cs, angp
anti-n p 3π+ 2π
Record comments
Confirmation of the existence of the antineutron.