skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Production of K⁺K⁻ pairs in proton-proton collisions below the Φ meson threshold

Abstract

The pp→ppK⁺K⁻ reaction was measured below the Φ threshold at a beam energy of 2.568 GeV using the COSY-ANKE magnetic spectrometer. By assuming that the four-body phase space is distorted only by the product of two-body final-state interactions, fits to a variety of one-dimensional distributions permit the evaluation of differential and total cross sections. The shapes of the distributions in the Kp and Kpp invariant masses are reproduced only if the K⁻p interaction is even stronger than that found at higher energy. The cusp effect in the K⁺K⁻ distribution at the K⁰K¯¯¯⁰ threshold is much more clear and some evidence is also found for coupling between the K⁻p and K¯¯¯⁰n channels. However, the energy dependence of the total cross section cannot be reproduced by considering only a simple product of such pairwise final-state interactions.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; « less
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1102848
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Name: Physical Review. C, Nuclear Physics Journal Volume: 87 Journal Issue: 6; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Ye, Q. J., Hartmann, M., Chiladze, D., Dymov, S., Dzyuba, A., Gao, H., Gebel, R., Hejny, V., Kacharava, A., Lorentz, B., Mchedlishvili, D., Merzliakov, S., Mielke, M., Mikirtytchiants, S., Ohm, H., Papenbrock, M., Polyanskiy, A., Serdyuk, V., Stein, H. J., Ströher, H., Trusov, S., Valdau, Yu., Wilkin, C., and Wüstner, P. Production of K⁺K⁻ pairs in proton-proton collisions below the Φ meson threshold. United States: N. p., 2013. Web. doi:10.1103/PhysRevC.87.065203.
Ye, Q. J., Hartmann, M., Chiladze, D., Dymov, S., Dzyuba, A., Gao, H., Gebel, R., Hejny, V., Kacharava, A., Lorentz, B., Mchedlishvili, D., Merzliakov, S., Mielke, M., Mikirtytchiants, S., Ohm, H., Papenbrock, M., Polyanskiy, A., Serdyuk, V., Stein, H. J., Ströher, H., Trusov, S., Valdau, Yu., Wilkin, C., & Wüstner, P. Production of K⁺K⁻ pairs in proton-proton collisions below the Φ meson threshold. United States. doi:10.1103/PhysRevC.87.065203.
Ye, Q. J., Hartmann, M., Chiladze, D., Dymov, S., Dzyuba, A., Gao, H., Gebel, R., Hejny, V., Kacharava, A., Lorentz, B., Mchedlishvili, D., Merzliakov, S., Mielke, M., Mikirtytchiants, S., Ohm, H., Papenbrock, M., Polyanskiy, A., Serdyuk, V., Stein, H. J., Ströher, H., Trusov, S., Valdau, Yu., Wilkin, C., and Wüstner, P. Wed . "Production of K⁺K⁻ pairs in proton-proton collisions below the Φ meson threshold". United States. doi:10.1103/PhysRevC.87.065203.
@article{osti_1102848,
title = {Production of K⁺K⁻ pairs in proton-proton collisions below the Φ meson threshold},
author = {Ye, Q. J. and Hartmann, M. and Chiladze, D. and Dymov, S. and Dzyuba, A. and Gao, H. and Gebel, R. and Hejny, V. and Kacharava, A. and Lorentz, B. and Mchedlishvili, D. and Merzliakov, S. and Mielke, M. and Mikirtytchiants, S. and Ohm, H. and Papenbrock, M. and Polyanskiy, A. and Serdyuk, V. and Stein, H. J. and Ströher, H. and Trusov, S. and Valdau, Yu. and Wilkin, C. and Wüstner, P.},
abstractNote = {The pp→ppK⁺K⁻ reaction was measured below the Φ threshold at a beam energy of 2.568 GeV using the COSY-ANKE magnetic spectrometer. By assuming that the four-body phase space is distorted only by the product of two-body final-state interactions, fits to a variety of one-dimensional distributions permit the evaluation of differential and total cross sections. The shapes of the distributions in the Kp and Kpp invariant masses are reproduced only if the K⁻p interaction is even stronger than that found at higher energy. The cusp effect in the K⁺K⁻ distribution at the K⁰K¯¯¯⁰ threshold is much more clear and some evidence is also found for coupling between the K⁻p and K¯¯¯⁰n channels. However, the energy dependence of the total cross section cannot be reproduced by considering only a simple product of such pairwise final-state interactions.},
doi = {10.1103/PhysRevC.87.065203},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 87,
place = {United States},
year = {2013},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevC.87.065203

Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Kaon pair production in proton-proton collisions
journal, January 2008


Near threshold K+K− meson-pair production in proton–proton collisions
journal, August 2001


Determination of target thickness and luminosity from beam energy losses
journal, May 2008

  • Stein, H. J.; Hartmann, M.; Keshelashvili, I.
  • Physical Review Special Topics - Accelerators and Beams, Vol. 11, Issue 5
  • DOI: 10.1103/PhysRevSTAB.11.052801

Production of K + K pairs in proton-proton collisions at 2.83 GeV
journal, March 2012


Generalized Dalitz plot analysis of the near-threshold pp pp K + K reaction in view of the K + K final state interaction
journal, October 2009


Kaon pair production close to threshold
journal, March 2006


Near-Threshold Production of ϕ Mesons in p p Collisions
journal, June 2006


Evidence for a Kaon-Bound State K p p Produced in K Absorption Reactions at Rest
journal, June 2005


K ¯ NN quasibound state and the K ¯ N interaction: Coupled-channels Faddeev calculations of the K ¯ NN π Σ N system
journal, October 2007


Possible Resonant State in Pion-Hyperon Scattering
journal, May 1959


Basic K ¯ nuclear cluster, K pp , and its enhanced formation in the p + p K + + X reaction
journal, October 2007


Indication of a Deeply Bound and Compact K p p State Formed in the p p p Λ K + Reaction at 2.85 GeV
journal, April 2010


The Near-Threshold Production of ϕ-Mesons in Proton–Nucleon Collisions
journal, January 2007

  • Hartmann, M.; Maeda, Y.; Keshelashvili, I.
  • International Journal of Modern Physics A, Vol. 22, Issue 02n03
  • DOI: 10.1142/S0217751X07035483

φ and ω meson production in pp reactions at p lab = 3.67 GeV / c
journal, January 2001


Antikaon production in nucleon- nucleon reactions near threshold
journal, March 1997

  • Sibirtsev, A.; Cassing, W.; Ko, C. M.
  • Zeitschrift für Physik A Hadrons and Nuclei, Vol. 358, Issue 1
  • DOI: 10.1007/s002180050282

ANKE, a new facility for medium energy hadron physics at COSY-Jülich
journal, April 2001

  • Barsov, S.; Bechstedt, U.; Bothe, W.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 462, Issue 3
  • DOI: 10.1016/S0168-9002(00)01147-5

Associated strangeness production in the pp pK + K p and pp pK + π 0 Σ 0 reactions
journal, August 2010


Cooler synchrotron COSY — Performance and perspectives
journal, May 1997

  • Maier, R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 390, Issue 1-2
  • DOI: 10.1016/S0168-9002(97)00324-0

Identification of K+-mesons from subthreshold pA collisions with ANKE at COSY-Jülich
journal, April 2002

  • Büscher, M.; Junghans, H.; Koptev, V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 481, Issue 1-3
  • DOI: 10.1016/S0168-9002(01)01401-2

Coupled-channel effects in the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>p</mml:mi><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:mi>p</mml:mi><mml:mi>p</mml:mi><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math> reaction
journal, October 2008