HEPData Search

Showing 6 of 36 results

Subthreshold K+ production in proton nucleus collisions

De̹bowski, M. ; Barth, R. ; Boivin, M. ; et al.

Z.Phys.A 356 (1996) 313-325, 1996.

Inspire Record 432858 DOI 10.17182/hepdata.16477

Double differential K+cross sections have been measured in p+C collisions at 1.2, 1.5 and 2.5 GeV beam energy and in p+Pb collisions at 1.2 and 1.5 GeV. The K+ spectrum taken at 2.5 GeV can be reproduced quantitatively by a model calculation which takes into account first chance proton-nucleon collisions and internal momentum with energy distribution of nucleons according to the spectral function. At 1.2 and 1.5 GeV beam energy the K+ data excess significantly the model predictions for first chance collisions. When taking secondary processes into account the results of the calculations are in much better agreement with the data.

5 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Subthreshold production of low momentum K+ in p + C at 1.2-GeV.

Badala, A. ; Barbera, R. ; Bassi, M. ; et al.

Phys.Rev.Lett. 80 (1998) 4863-4866, 1998.

Inspire Record 471821 DOI 10.17182/hepdata.19554

The double differential cross section of low momentum kaons ( ≤0.3GeV/c) from p+C collisions at subthreshold bombarding energies has been for the first time measured by the use of the CLAMSUD magnetic spectrometer installed at the CELSIUS storage ring. Invariant cross sections extracted from the data show a source rapidity shifted below the nucleon-nucleon rapidity, in agreement with the existence of multistep processes in the K+ production cross section. The total cross section of the inclusive reaction 12C(p,K+) at 1.2 GeV was extracted and compared with recent data systematics as a function of the proton bombarding energy.

1 data table

Table 1

No description provided.