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Title: Experimental study of the pd{yields}{sup 3}He K{sup +}K{sup -} and pd{yields}{sup 3}He {phi} reactions close to threshold

Abstract

Two-kaon production in proton-deuteron collisions has been studied at three energies close to threshold using a calibrated magnetic spectrograph to measure the final {sup 3}He and a vertex detector to measure the K{sup +}K{sup -} pair. Differential and total cross sections are presented for the production of {phi}-mesons, decaying through {phi}{yields}K{sup +}K{sup -}, as well as for prompt K{sup +}K{sup -} production. The prompt production seems to follow phase space in both its differential distributions and in its energy dependence. The amplitude for the pd{yields}{sup 3}He{phi} reaction varies little for excess energies below 22 MeV and the value is consistent with that obtained from a threshold measurement. The angular distribution of the K{sup +}K{sup -} decay pair shows that near threshold the {phi}-mesons are dominantly produced with polarization m=0 along the initial proton direction. No conclusive evidence for f{sub 0}(980) production is found in the data.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ;  [2];  [3]; ;  [4]
  1. Helmholtz-Institut fuer Strahlen-und Kernphysik der Universitaet Bonn, D-53115 Bonn (Germany)
  2. Institut fuer Kernphysik, Forschungszentrum Juelich, D-52425 Juelich (Germany)
  3. Institute of Nuclear Physics, Polish Academy of Sciences, Krakow (Poland)
  4. Institute of Physics, Jagellonian University, PL-30059 Krakow (Poland) (and others)
Publication Date:
OSTI Identifier:
20990972
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.75.015204; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANGULAR DISTRIBUTION; DEUTERONS; ENERGY DEPENDENCE; F0-980 MESONS; HELIUM 3; MEV RANGE 10-100; PARTICLE PRODUCTION; PHASE SPACE; POTASSIUM IONS; PROTONS; TOTAL CROSS SECTIONS

Citation Formats

Bellemann, F., Berg, A., Bisplinghoff, J., Bohlscheid, G., Ernst, J., Henrich, C., Hinterberger, F., Ibald, R., Jahn, R., Joosten, R., Munkel, J., Schnitker, H., Scho, K., Kilian, K., Machner, H., Rossen, P. von, Toelle, R., Kozela, A., Magiera, A., and Smyrski, J.. Experimental study of the pd{yields}{sup 3}He K{sup +}K{sup -} and pd{yields}{sup 3}He {phi} reactions close to threshold. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.015204.
Bellemann, F., Berg, A., Bisplinghoff, J., Bohlscheid, G., Ernst, J., Henrich, C., Hinterberger, F., Ibald, R., Jahn, R., Joosten, R., Munkel, J., Schnitker, H., Scho, K., Kilian, K., Machner, H., Rossen, P. von, Toelle, R., Kozela, A., Magiera, A., & Smyrski, J.. Experimental study of the pd{yields}{sup 3}He K{sup +}K{sup -} and pd{yields}{sup 3}He {phi} reactions close to threshold. United States. doi:10.1103/PHYSREVC.75.015204.
Bellemann, F., Berg, A., Bisplinghoff, J., Bohlscheid, G., Ernst, J., Henrich, C., Hinterberger, F., Ibald, R., Jahn, R., Joosten, R., Munkel, J., Schnitker, H., Scho, K., Kilian, K., Machner, H., Rossen, P. von, Toelle, R., Kozela, A., Magiera, A., and Smyrski, J.. Mon . "Experimental study of the pd{yields}{sup 3}He K{sup +}K{sup -} and pd{yields}{sup 3}He {phi} reactions close to threshold". United States. doi:10.1103/PHYSREVC.75.015204.
@article{osti_20990972,
title = {Experimental study of the pd{yields}{sup 3}He K{sup +}K{sup -} and pd{yields}{sup 3}He {phi} reactions close to threshold},
author = {Bellemann, F. and Berg, A. and Bisplinghoff, J. and Bohlscheid, G. and Ernst, J. and Henrich, C. and Hinterberger, F. and Ibald, R. and Jahn, R. and Joosten, R. and Munkel, J. and Schnitker, H. and Scho, K. and Kilian, K. and Machner, H. and Rossen, P. von and Toelle, R. and Kozela, A. and Magiera, A. and Smyrski, J.},
abstractNote = {Two-kaon production in proton-deuteron collisions has been studied at three energies close to threshold using a calibrated magnetic spectrograph to measure the final {sup 3}He and a vertex detector to measure the K{sup +}K{sup -} pair. Differential and total cross sections are presented for the production of {phi}-mesons, decaying through {phi}{yields}K{sup +}K{sup -}, as well as for prompt K{sup +}K{sup -} production. The prompt production seems to follow phase space in both its differential distributions and in its energy dependence. The amplitude for the pd{yields}{sup 3}He{phi} reaction varies little for excess energies below 22 MeV and the value is consistent with that obtained from a threshold measurement. The angular distribution of the K{sup +}K{sup -} decay pair shows that near threshold the {phi}-mesons are dominantly produced with polarization m=0 along the initial proton direction. No conclusive evidence for f{sub 0}(980) production is found in the data.},
doi = {10.1103/PHYSREVC.75.015204},
journal = {Physical Review. C, Nuclear Physics},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}