Cooperative Effects Observed in the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>π</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span> Production from Nucleus-Nucleus Collisions

H. Noll; E. Grosse; P. Braun-Munzinger; H. Dabrowski; H. Heckwolf; O. Klepper; C. Michel; W. F. J. Müller; H. Stelzer; C. Brendel; W. Rösch

doi:10.1103/PhysRevLett.52.1284

Cooperative Effects Observed in the $π^{0}$ Production from Nucleus-Nucleus Collisions

H. Noll, E. Grosse, P. Braun-Munzinger, H. Dabrowski, H. Heckwolf, O. Klepper, C. Michel, W. F. J. Müller, H. Stelzer, C. Brendel, and W. Rösch

Phys. Rev. Lett. 52, 1284 – Published 9 April 1984

Abstract

Cooperative effects in collisions of 60-84-MeV/u ${}^{12}C$ projectiles with different target nuclei have been experimentally established through $π^{0}$ production, especially through the measurement of the apparent velocity of the pion source. Our method for the spectroscopy of neutral pions covers all angles and kinetic energies (down to zero). The exponential slopes in the spectra contain rather high Fourier components indicating the presence of short-distance phenomena in the collision dynamics.

Received 2 January 1984

DOI:https://doi.org/10.1103/PhysRevLett.52.1284

Authors & Affiliations

H. Noll^*, E. Grosse, P. Braun-Munzinger^†, H. Dabrowski, H. Heckwolf, O. Klepper, C. Michel, W. F. J. Müller, and H. Stelzer

Gesellschaft für Schwerionenforschung, D-6100 Darmstadt 11, Germany

C. Brendel and W. Rösch

Institut für Kernphysik der Technischen Hochschule, D-6100 Darmstadt 11, Germany

^*Also at Institut für Kernphysik der Universität, D-6000 Frankfurt, Germany.
^†Permanently at Department of Physics, State University of New York, Stony Brook, N. Y. 11794.