Published Article


a0+(980)-Resonance Production in pp&773; 0 Reactions Close to Threshold


V. Kleber ; Markus Buescher ; V. Chernyshev ; S. Dymov ; P. Fedorets ; V. Grishina ; C. Hanhart ; M. Hartmann ; V. Hejny ; A. Khoukaz ; H.R. Koch ; V. Komarov ; L. Kondratyuk ; V. Koptev ; N. Lang ; S. Merzliakov ; S. Mikirtychiants ; M. Nekipelov ; H. Ohm ; A. Petrus ; D. Prasuhn ; R. Schleichert ; A. Sibirtsev ; H.J. Stein ; H. Stroher ; K.H. Watzlawik ; P. Wustner ; S. Yaschenko ; B. Zalikhanov ; I. Zychor
Phys. Rev. Lett.

Published in: Physical Review Letters
Vol.: 91    Num./Issue: 17
Page No: 172304
ISSN: 0031-9007
Year: Phys. Rev. Lett. / 2003

Abstract: The reaction pp&773; 0 has been investigated at an excess energy of Q=46&8202;&773; 0 threshold with ANKE at the cooler synchrotron COSY-J&773; 0 were identified, corresponding to a total cross section of &8594;dK+K&8201;&8202;nb. Invariant-mass and angular distributions have been jointly analyzed and reveal s-wave dominance between the two kaons, accompanied by a p wave between the deuteron and the kaon system. This is interpreted in terms of a0+(980)-resonance production.<br><br>


Language: rus

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