Observation of enhanced subthreshold K+ production in central collisions between heavy nuclei

In the very heavy collision system 197Au+197Au the K+ production process was studied as a function of impact parameter at 1 GeV/nucleon, a beam energy well below the free N-N threshold. The K+ multiplicity increases more
In the very heavy collision system 197Au+197Au the K+ production process was studied as a function of impact parameter at 1 GeV/nucleon, a beam energy well below the free N-N threshold. The K+ multiplicity increases more than linearly with the number of participant nucleons and the K+/ pi + ratio rises significantly when going from peripheral to central collisions. The measured K+ double differential cross section is enhanced by a factor of 6 compared to microscopic transport calculations if secondary processes ( Delta N-->K Lambda N and Delta Delta -->K Lambda N) are ignored.
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weitere Autoren: M. Cieslak, M. Debowski, E. Grosse, W. Henning, P. Koczon, R. Schicker, E. Schwab, and P. Senger , P. Baltes, Ch. Müntz, H. Oeschler, S. Sartorius, Ch. Sturm, and A. Wagner , P. Beckerle, Ch. Bormann, D.
weitere Autoren: M. Cieslak, M. Debowski, E. Grosse, W. Henning, P. Koczon, R. Schicker, E. Schwab, and P. Senger , P. Baltes, Ch. Müntz, H. Oeschler, S. Sartorius, Ch. Sturm, and A. Wagner , P. Beckerle, Ch. Bormann, D. Brill, Y. Shin, J. Stein, R. Stock, and H. Ströbele , B. Kohlmeyer, H. Pöppl, F. Pühlhofer, J. Speer, and K. Völkel , W. Walus
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Metadaten
Author:D. Miskowiec, W. Ahner, R. Barth, et al., Reinhard Stock
URN:urn:nbn:de:hebis:30-18740
Document Type:Article
Language:English
Date of Publication (online):2005/10/14
Year of first Publication:1994
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/10/14
Source:Phys. Rev. Lett. 72, 3650-3653 (1994), ©1994 The American Physical Society, http://link.aps.org/abstract/PRL/v72/p3650
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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