K0πand K*0Σ+ photoproduction off the proton

被引：0
|
作者：
M. Nanova
J. C. S. Bacelar
B. Bantes
O. Bartholomy
D. Bayadilov
R. Beck
Y. A. Beloglazov
R. Castelijns
V. Crede
H. Dutz
A. Ehmanns
D. Elsner
K. Essig
R. Ewald
I. Fabry
K. Fornet-Ponse
M. Fuchs
Ch. Funke
R. Gothe
R. Gregor
A. B. Gridnev
E. Gutz
P. Hoffmeister
I. Horn
I. Jaegle
J. Junkersfeld
H. Kalinowsky
S. Kammer
V. Kleber
Frank Klein
Friedrich Klein
E. Klempt
M. Konrad
M. Kotulla
B. Krusche
M. Lang
J. Langheinrich
H. Löhner
I. V. Lopatin
J. Lotz
S. Lugert
D. Menze
J. G. Messchendorp
T. Mertens
V. Metag
C. Morales
D. V. Novinski
R. Novotny
M. Ostrick
L. M. Pant
机构：
[1] Universität Gießen,II. Physikalisches Institut
[2] Kernfysisch Versneller Institut,Physikalisches Institut
[3] Universität Bonn,Helmholtz
[4] Universität Bonn,Institut für Strahlen
[5] Petersburg Nuclear Physics Institute, u. Kernphysik
[6] Florida State University,Department of Physics
[7] Universität Basel,Physikalisches Institut
来源：
The European Physical Journal A | 2008年 / 35卷
关键词：
13.60.Le Meson production; 25.20.Lj Photoproduction reactions; 14.20.Jn Hyperons;
D O I：
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摘要：
The exclusive reactions γp → K*0Σ+(1189) and γp → K0π0Σ+(1189) , leading to the p 4π0 final state, have been measured with a tagged photon beam for incident energies from threshold up to 2.5GeV. The experiment has been performed at the tagged photon facility of the ELSA accelerator (Bonn). The Crystal Barrel and TAPS detectors were combined to a photon detector system of almost 4π geometrical acceptance. Differential and total cross-sections are reported. At energies close to the threshold, a flat angular distribution has been observed for the reaction γp → K0π0Σ+ suggesting dominant s -channel production. Σ*(1385) and higher-lying hyperon states have been observed. An enhancement in the forward direction in the angular distributions of the reaction γp → K*0Σ+ indicates a t -channel exchange contribution to the reaction mechanism. The experimental data are in reasonable agreement with recent theoretical predictions.
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页码：333 / 342
页数：9
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