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Journal Articles Physical Review C Year : 2014

Associate K^0 production in p+p collisions at 3.5 GeV: The role of Delta(1232)++

G. Agakishiev
  • Function : Author
O. Arnold
  • Function : Author
D. Belver
  • Function : Author
A. Belyaev
  • Function : Author
J. C. Berger-Chen
  • Function : Author
A. Blanco
  • Function : Author
M. Böhmer
  • Function : Author
J. L. Boyard
  • Function : Author
P. Cabanelas
  • Function : Author
S. Chernenko
  • Function : Author
A. Dybczak
  • Function : Author
E. Epple
  • Function : Author
L. Fabbietti
  • Function : Author
O. Fateev
  • Function : Author
P. Finocchiaro
  • Function : Author
P. Fonte
  • Function : Author
J. Friese
  • Function : Author
I. Fröhlich
  • Function : Author
T. Galatyuk
  • Function : Author
J. A. Garzón
  • Function : Author
R. Gernhäuser
  • Function : Author
K. Göbel
  • Function : Author
M. Golubeva
  • Function : Author
D. González-Díaz
  • Function : Author
F. Guber
  • Function : Author
M. Gumberidze
  • Function : Author
T. Heinz
R. Holzmann
  • Function : Author
A. Ierusalimov
  • Function : Author
I. Iori
  • Function : Author
A. Ivashkin
  • Function : Author
M. Jurkovic
  • Function : Author
B. Kämpfer
  • Function : Author
T. Karavicheva
  • Function : Author
I. Koenig
  • Function : Author
W. Koenig
  • Function : Author
B. W. Kolb
  • Function : Author
G. Korcyl
  • Function : Author
G. Kornakov
  • Function : Author
R. Kotte
  • Function : Author
A. Krása
  • Function : Author
F. Krizek
  • Function : Author
R. Krücken
W. Kühn
  • Function : Author
A. Kugler
  • Function : Author
T. Kunz
  • Function : Author
A. Kurepin
  • Function : Author
V. Ladygin
  • Function : Author
R. Lalik
  • Function : Author
K. Lapidus
  • Function : Author
A. Lebedev
  • Function : Author
L. Lopes
  • Function : Author
M. Lorenz
  • Function : Author
L. Maier
  • Function : Author
A. Mangiarotti
  • Function : Author
J. Markert
  • Function : Author
V. Metag
  • Function : Author
J. Michel
  • Function : Author
C. Müntz
  • Function : Author
R. Münzer
  • Function : Author
L. Naumann
  • Function : Author
Y. C. Pachmayer
  • Function : Author
M. Palka
  • Function : Author
Y. Parpottas
  • Function : Author
V. Pechenov
  • Function : Author
O. Pechenova
  • Function : Author
J. Pietraszko
  • Function : Author
W. Przygoda
  • Function : Author
A. Reshetin
  • Function : Author
A. Rustamov
  • Function : Author
A. Sadovsky
  • Function : Author
P. Salabura
  • Function : Author
A. Schmah
  • Function : Author
E. Schwab
  • Function : Author
J. Siebenson
  • Function : Author
Yu. G. Sobolev
  • Function : Author
B. Spruck
  • Function : Author
H. Ströbele
  • Function : Author
J. Stroth
  • Function : Author
C. Sturm
  • Function : Author
A. Tarantola
  • Function : Author
K. Teilab
  • Function : Author
P. Tlusty
  • Function : Author
M. Traxler
  • Function : Author
H. Tsertos
  • Function : Author
T. Vasiliev
  • Function : Author
V. Wagner
  • Function : Author
M. Weber
  • Function : Author
C. Wendisch
  • Function : Author
J. Wüstenfeld
  • Function : Author
S. Yurevich
  • Function : Author
Y. Zanevsky
  • Function : Author

Abstract

An exclusive analysis of the 4-body final states $\mathrm{\Lambda + p + \pi^{+} + K^{0}}$ and $\mathrm{\Sigma^{0} + p + \pi^{+} + K^{0}}$ measured with HADES for p+p collisions at a beam kinetic energy of 3.5 GeV is presented. The analysis uses various phase space variables, such as missing mass and invariant mass distributions, in the four particle event selection (p, $\pi^+$, $\pi^+$, $\pi^-$) to find cross sections of the different production channels, contributions of the intermediate resonances $\mathrm{\Delta^{++}}$ and $\mathrm{\Sigma(1385)^{+}}$ and corresponding angular distributions. A dominant resonant production is seen, where the reaction $\mathrm{\Lambda + \Delta^{++} + K^{0}}$ has an about ten times higher cross section ($\mathrm{29.45\pm0.08^{+1.67}_{-1.46}\pm2.06\,\mu b}$) than the analogous non-resonant reaction ($\mathrm{2.57\pm0.02^{+0.21}_{-1.98}\pm0.18\,\mu b}$). A similar result is obtained in the corresponding $\Sigma^{0}$ channels with $\mathrm{9.26\pm0.05^{+1.41}_{-0.31}\pm0.65\,\ mu b}$ in the resonant and $\mathrm{1.35\pm0.02^{+0.10}_{-1.35}\pm0.09\,\mu b}$ in the non-resonant reactions.

Dates and versions

in2p3-00978410 , version 1 (14-04-2014)

Identifiers

Cite

G. Agakishiev, O. Arnold, D. Belver, A. Belyaev, J. C. Berger-Chen, et al.. Associate K^0 production in p+p collisions at 3.5 GeV: The role of Delta(1232)++. Physical Review C, 2014, 90 (1), pp.015202. ⟨10.1103/PhysRevC.90.015202⟩. ⟨in2p3-00978410⟩
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