Subthreshold K+ production in deuteron and alpha induced nuclear reactions

M. Dȩbowski, P. Senger, M. Boivin, Y. Le Bornec, P. Courtat, R. Gacougnolle, E. Grosse, S. Kabana, T. Kirchner, P. Koczoń, M. Mang, E. Schwab, B. Tatischeff, A. Wagner, W. Waluś, N. Willis, G. Wolf, R. Wurzinger, J. Yonnet

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Abstract

Double differential cross sections d2σ/dpdΩ have been measured for π+ and K+ emitted around midrapidity in d + A and α + A collisions at a beam kinetic energy of 1.15 GeV/nucleon. The total π+ yield increases by a factor of about 2 when using an alpha projectile instead of a deuteron whereas the K+ yield increases by a factor of about 4. According to transport calculations, the K+ enhancement depends both on the number of hadron-hadron collisions and on the energy available in those collisions: their center-of-mass energy increases with increasing number of projectile nucleons.

Original languageEnglish
Pages (from-to)8-14
Number of pages7
JournalPhysics Letters B
Volume413
Issue number1-2
Publication statusPublished - Nov 6 1997

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nuclear reactions
deuterons
collisions
projectiles
nucleons
center of mass
kinetic energy
energy
augmentation
cross sections

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Dȩbowski, M., Senger, P., Boivin, M., Le Bornec, Y., Courtat, P., Gacougnolle, R., ... Yonnet, J. (1997). Subthreshold K+ production in deuteron and alpha induced nuclear reactions. Physics Letters B, 413(1-2), 8-14.

Subthreshold K+ production in deuteron and alpha induced nuclear reactions. / Dȩbowski, M.; Senger, P.; Boivin, M.; Le Bornec, Y.; Courtat, P.; Gacougnolle, R.; Grosse, E.; Kabana, S.; Kirchner, T.; Koczoń, P.; Mang, M.; Schwab, E.; Tatischeff, B.; Wagner, A.; Waluś, W.; Willis, N.; Wolf, G.; Wurzinger, R.; Yonnet, J.

In: Physics Letters B, Vol. 413, No. 1-2, 06.11.1997, p. 8-14.

Research output: Contribution to journalArticle

Dȩbowski, M, Senger, P, Boivin, M, Le Bornec, Y, Courtat, P, Gacougnolle, R, Grosse, E, Kabana, S, Kirchner, T, Koczoń, P, Mang, M, Schwab, E, Tatischeff, B, Wagner, A, Waluś, W, Willis, N, Wolf, G, Wurzinger, R & Yonnet, J 1997, 'Subthreshold K+ production in deuteron and alpha induced nuclear reactions', Physics Letters B, vol. 413, no. 1-2, pp. 8-14.
Dȩbowski M, Senger P, Boivin M, Le Bornec Y, Courtat P, Gacougnolle R et al. Subthreshold K+ production in deuteron and alpha induced nuclear reactions. Physics Letters B. 1997 Nov 6;413(1-2):8-14.
Dȩbowski, M. ; Senger, P. ; Boivin, M. ; Le Bornec, Y. ; Courtat, P. ; Gacougnolle, R. ; Grosse, E. ; Kabana, S. ; Kirchner, T. ; Koczoń, P. ; Mang, M. ; Schwab, E. ; Tatischeff, B. ; Wagner, A. ; Waluś, W. ; Willis, N. ; Wolf, G. ; Wurzinger, R. ; Yonnet, J. / Subthreshold K+ production in deuteron and alpha induced nuclear reactions. In: Physics Letters B. 1997 ; Vol. 413, No. 1-2. pp. 8-14.
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