Search for narrow structure in proton-antiproton annihilation cross sections from 1900 to 1960 MeV |
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| Authors: | T Brando I Daftari A Deguzman TE Kalogeropoulos RA Lewis DI Lowenstein RJ Miller BY Oh DC Peaslee C Petridou M Singer GA Smith GS Tzanakos R Venugopal RD Von Lintig J Whitmore |
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| Institution: | 5. Department of Physics, University of Maryland, College Park, MD 20742, USA |
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| Abstract: | The p?p annihilation cross section has been measured with good resolution (～ 2 MeV RMS) in the mass range 1900–1960 MeV. No narrow structures are seen, the 90% confidence level upper limit being 8–12 mb MeV for the integrated area of a resonance in this mass range. However, we do not rule out a very narrow bump-dip structure seen in an earlier experiment in the 1935–1941 MeV mass interval. The data also do not support the existence of a broad structure previously reported at 1937 MeV. |
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