Rapidity-gap separation and study of single-diffraction dissociation in pp collisions at 12 and 24 GeV/c

Autor: L. Van Hove, U. Idschok, B. Schröder, N. Schrankel, H. G. Heilmann, H.F. Neumann, S. Nissen-Meyer, H. Fesefeldt, B. Schwarz, Peter Breitenlohner, J. Benecke, N. Schmitz, Volker Blobel, P. Kobe, B.M. Schwarzschild
Rok vydání: 1974
Předmět:
Zdroj: Nuclear Physics B. 76:29-47
ISSN: 0550-3213
DOI: 10.1016/0550-3213(74)90135-7
Popis: An event-by-event separation of the single-diffractive component in the inclusive reaction p + p → p + X is attempted with our 12 and 24 GeV/ c bubble-chamber data, using a method involving largest rapidity gaps. The method yields a (non-strange) single-diffraction cross section of about 7 mb at both energes, dominated by two and four prongs. For the diffractive component the recoil mass distribution d σ /d M X 2 shows a sharp peak near M X 2 = 2 GeV 2 at both energies, with a long tail that broadens significantly with increasing energy. This shape is reasonably well described by the diffractive terms of a triple-Regge fit to the full pp data. The slope parameter of the diffractive t distribution shows a precipitous drop with increasing M X 2 , levelling off abruptly at M X 2 ≈ 3 GeV 2 . The mean charged multiplicity of the diffractive system appears to be linear in log M X 2 and independent of s .
Databáze: OpenAIRE