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Journal Articles Physics Letters B Year : 2015

Partial Wave Analysis of the Reaction p(3.5GeV)+p→pK+Λ to Search for the "ppK−" Bound State

G. Agakishiev
  • Function : Author
O. Arnold
  • Function : Author
A. Balanda
  • Function : Author
D. Belver
  • Function : Author
A.V. Belyaev
  • Function : Author
J.C. Berger-Chen
  • Function : Author
A. Blanco
  • Function : Author
M. Böhmer
  • Function : Author
P. Cabanelas
  • Function : Author
S. Chernenko
  • Function : Author
A. Dybczak
  • Function : Author
E. Epple
  • Function : Author
L. Fabbietti
  • Function : Author
O.V. Fateev
  • Function : Author
P. Finocchiaro
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P. Fonte
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J. Friese
  • Function : Author
I. Fröhlich
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T. Galatyuk
  • Function : Author
J.A. Garzon
  • Function : Author
R. Gernhäuser
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K. Göbel
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M. Golubeva
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D. Gonzalez-Diaz
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F. Guber
  • Function : Author
T. Heinz
R. Holzmann
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A. Ierusalimov
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I. Iori
  • Function : Author
A. Ivashkin
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M. Jurkovic
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B. Kämpfer
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T. Karavicheva
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I. Koenig
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W. Koenig
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B.W. Kolb
  • Function : Author
G. Kornakov
  • Function : Author
R. Kotte
  • Function : Author
A. Krasa
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F. Krizek
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R. Krücken
W. Kühn
  • Function : Author
A. Kugler
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A. Kurepin
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V. Ladygin
  • Function : Author
R. Lalik
  • Function : Author
S. Lang
  • Function : Author
K. Lapidus
  • Function : Author
A. Lebedev
  • Function : Author
L. Lopes
  • Function : Author
M. Lorenz
  • Function : Author
L. Maier
  • Function : Author
A. Mangiarotti
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J. Markert
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V. Metag
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B. Michalska
  • Function : Author
J. Michel
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C. Müntz
  • Function : Author
L. Naumann
  • Function : Author
Y.C. Pachmayer
  • Function : Author
M. Palka
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Y. Parpottas
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V. Pechenov
  • Function : Author
O. Pechenova
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J. Pietraszko
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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
S. Spataro
  • Function : Author
B. Spruck
  • Function : Author
H. Ströbele
  • Function : Author
J. Stroth
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C. Sturm
  • Function : Author
A. Tarantola
  • Function : Author
K. Teilab
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P. Tlusty
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M. Traxler
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R. Trebacz
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H. Tsertos
  • Function : Author
V. Wagner
  • Function : Author
M. Weber
  • Function : Author
C. Wendisch
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J. Wüstenfeld
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S. Yurevich
  • Function : Author
Y.V. Zanevsky
  • Function : Author

Abstract

Employing the Bonn-Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of the reaction p(3.5GeV)+p→pK+Λ. This reaction might contain information about the kaonic cluster "ppK−" via its decay into pΛ. Due to interference effects in our coherent description of the data, a hypothetical K¯¯¯NN (or, specifically "ppK−") cluster signal must not necessarily show up as a pronounced feature (e.g. a peak) in an invariant mass spectra like pΛ. Our PWA analysis includes a variety of resonant and non-resonant intermediate states and delivers a good description of our data (various angular distributions and two-hadron invariant mass spectra) without a contribution of a K¯¯¯NN cluster. At a confidence level of CLs=95\% such a cluster can not contribute more than 2-12\% to the total cross section with a pK+Λ final state, which translates into a production cross-section between 0.7 μb and 4.2 μb, respectively. The range of the upper limit depends on the assumed cluster mass, width and production process.

Dates and versions

in2p3-01104946 , version 1 (19-01-2015)

Identifiers

Cite

G. Agakishiev, O. Arnold, A. Balanda, D. Belver, A.V. Belyaev, et al.. Partial Wave Analysis of the Reaction p(3.5GeV)+p→pK+Λ to Search for the "ppK−" Bound State. Physics Letters B, 2015, 742, pp.242-248. ⟨10.1016/j.physletb.2015.01.032⟩. ⟨in2p3-01104946⟩
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