Associate K^0 production in p+p collisions at 3.5 GeV: The role of Delta(1232)++
G. Agakishiev
,
O. Arnold
,
D. Belver
,
A. Belyaev
,
J. C. Berger-Chen
,
A. Blanco
,
M. Böhmer
,
J. L. Boyard
,
P. Cabanelas
,
S. Chernenko
,
A. Dybczak
,
E. Epple
,
L. Fabbietti
,
O. Fateev
,
P. Finocchiaro
,
P. Fonte
,
J. Friese
,
I. Fröhlich
,
T. Galatyuk
,
J. A. Garzón
,
R. Gernhäuser
,
K. Göbel
,
M. Golubeva
,
D. González-Díaz
,
F. Guber
,
M. Gumberidze
,
T. Heinz
,
T. Hennino
(1)
,
R. Holzmann
,
A. Ierusalimov
,
I. Iori
,
A. Ivashkin
,
M. Jurkovic
,
B. Kämpfer
,
T. Karavicheva
,
I. Koenig
,
W. Koenig
,
B. W. Kolb
,
G. Korcyl
,
G. Kornakov
,
R. Kotte
,
A. Krása
,
F. Krizek
,
R. Krücken
,
H. Kuc
(1)
,
W. Kühn
,
A. Kugler
,
T. Kunz
,
A. Kurepin
,
V. Ladygin
,
R. Lalik
,
K. Lapidus
,
A. Lebedev
,
L. Lopes
,
M. Lorenz
,
L. Maier
,
A. Mangiarotti
,
J. Markert
,
V. Metag
,
J. Michel
,
C. Müntz
,
R. Münzer
,
L. Naumann
,
Y. C. Pachmayer
,
M. Palka
,
Y. Parpottas
,
V. Pechenov
,
O. Pechenova
,
J. Pietraszko
,
W. Przygoda
,
B. Ramstein
(1)
,
A. Reshetin
,
A. Rustamov
,
A. Sadovsky
,
P. Salabura
,
A. Schmah
,
E. Schwab
,
J. Siebenson
,
Yu. G. Sobolev
,
B. Spruck
,
H. Ströbele
,
J. Stroth
,
C. Sturm
,
A. Tarantola
,
K. Teilab
,
P. Tlusty
,
M. Traxler
,
H. Tsertos
,
T. Vasiliev
,
V. Wagner
,
M. Weber
,
C. Wendisch
,
J. Wüstenfeld
,
S. Yurevich
,
Y. Zanevsky
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
- Function : Author
- PersonId : 761809
- ORCID : 0000-0003-1365-9464
- IdRef : 242263097
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
- Function : Author
- PersonId : 755533
- ORCID : 0000-0002-2755-8042
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.