Study of double diffraction dissociation in the reaction π±p→(3 π) ±(N π) + at 16 GeV/c

• Published in: Nuclear physics. B Vol. 75; no. 1; pp. 1 - 19
• Main Authors: Grässler, H., Honecker, R., Lauscher, P., Otter, G., Roloff, H., Spiering, Ch, Böckmann, K., Bossen, G.J., Kanazirsky, Ch, Rost, M., Counihan, M.J., Hansen, J.D., Jones, G.T., Kittel, W., Kuhn, D., Morrison, D.R.O., Hirose, T., Leitner, E.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.1974
• ISSN: 0550-3213; 1873-1562
• DOI: 10.1016/0550-3213(74)90461-1

Evidence is examined for double diffraction dissociation in the reactions π ±p → (3 π) ±(N π) + with (3 π) ± masses between 1.0 and 1.2 GeV at 16 GeV/ c incident beam momentum. The data considered are found to reveal: 1. (a) isospin zero exchange, 2. (b) the expected factorisation properties, 3. (c) a d σ/d t′ slope compatible with those deduced from single dissociation processes and elastic scattering, and (d) as shown by an analysis of D moments, (3 π) ± systems with the same typical spin-parity composition as observed in the diffractive single dissociation reactions π ±p → (3 π) ±p. Comparison of the 16 GeV/ c data with data of an 8 GeV/ c experiment indicate an almost energy-independent cross section for the process investigated.