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

doi:10.1103/PHYSREVC.75.015204

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

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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:

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. ^[1]; Kilian, K.; Machner, H.; Rossen, P. von; Toelle, R. ^[2]; Kozela, A. ^[3]; Magiera, A.; Smyrski, J. ^[4]

Helmholtz-Institut fuer Strahlen-und Kernphysik der Universitaet Bonn, D-53115 Bonn (Germany)
Institut fuer Kernphysik, Forschungszentrum Juelich, D-52425 Juelich (Germany)
Institute of Nuclear Physics, Polish Academy of Sciences, Krakow (Poland)
Institute of Physics, Jagellonian University, PL-30059 Krakow (Poland) (and others)

Publication Date:: Mon Jan 15 00:00:00 EST 2007

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.

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                    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.

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                    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.

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@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}

}

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DOI: 10.1103/PHYSREVC.75.015204

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Near Threshold Two Meson Production with the pd {yields} {sup 3}He{pi}{sup +}{pi}{sup {minus}} and pd {yields} {sup 3}HeK{sup +}K{sup {minus}} Reactions

COSY-MOMO Collaboration

Near-threshold two-meson production via the reactions pd {yields} {sup 3}He{pi}{sup +}{pi}{sup {minus}} and pd {yields} {sup 3}HeK{sup +}K{sup {minus}} was measured kinematically complete with the MOMO experiment at COSY. The obtained two-pion variant mass spectra and angular distributions depict a remarkable deviation from phase space. The two-kaon data are consistent with phase space topped by a clear signal of the {phi} meson.
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Grishina, V. Yu. ; Buescher, M. ; Kondratyuk, L. A. ; ... - Physical Review. C, Nuclear Physics

We investigate the K{sup -} {sup 3}He and K{sup +}K{sup -} interactions in the reaction pd{yields} {sup 3}He K{sup +}K{sup -} near threshold and compare our model calculations with data from the MOMO experiment at COSY-Juelich. A large attractive effective K{sup -}p amplitude would give a significant K{sup -} {sup 3}He final-state interaction effect, which is not supported by the experimental data. We also estimate upper limits for the a{sub 0}(980) and f{sub 0}(980) contributions to the produced K{sup +}K{sup -} pairs.
DOI: 10.1103/PHYSREVC.75.015208
Observation of B{sup +}{yields}{phi}{phi}K{sup +} and Evidence for B{sup 0}{yields}{phi}{phi}K{sup 0} below {eta}{sub c} Threshold

Aubert, B. ; Bona, M. ; Boutigny, D. ; ... - Physical Review Letters

We report measurements of the decays B{sup +}{yields}{phi}{phi}K{sup +} and B{sup 0}{yields}{phi}{phi}K{sup 0} using a sample of 231x10{sup 6} BB pairs collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the Stanford Linear Accelerator Center. The branching fractions are measured to be B(B{sup +}{yields}{phi}{phi}K{sup +})=(7.5{+-}1.0(stat){+-}0.7(syst))x10{sup -6} and B(B{sup 0}{yields}{phi}{phi}K{sup 0})=(4.1{sub -1.4}{sup +1.7}(stat){+-}0.4(syst))x10{sup -6} for a {phi}{phi} invariant mass below 2.85 GeV/c{sup 2}.
DOI: 10.1103/PHYSREVLETT.97.261803
Reactions {ital pd}{r_arrow}{sup 3}He{eta} and {ital pd}{r_arrow}{sup 3}He{pi}{sup +}{pi}{sup {minus}} near the {eta} threshold

Mayer, B. ; Boudard, A. ; Fabbro, B. ; ... - Physical Review, C

The reaction {ital pd}{r_arrow}{sup 3}He{eta} has been studied with the SPES2 spectrometer, for proton energies between 0.2 MeV and 11 MeV above threshold. The total cross section rises from 0.25 to 0.40 {mu}b in this region. The observed energy dependence can be attributed to the strong final state interaction. The angular distribution is nearly isotropic, consistent with {ital S} wave production. A measurement of the {ital pd}{r_arrow}{sup 3}He{pi}{sup +}{pi}{sup {minus}} cross section in the threshold region is also presented. The setup, which is capable of producing 10{sup 5} tagged {eta}/s with only a few percent background, is used to investigatemore »« less
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