Title of article :
An analysis of the contribution of isospin two ππ resonant states in the n̄p→π+π+π− annihilation reaction
Author/Authors :
OBELIX Collaboration، نويسنده , , A. Filippi، نويسنده , , M. Agnello، نويسنده , , M. Astrua، نويسنده , , E. Botta، نويسنده , , T. Bressani، نويسنده , , D. Calvo، نويسنده , , S. Costa، نويسنده , , F. DʹIsep، نويسنده , , A. Feliciello، نويسنده , , F. Iazzi، نويسنده , , S. Marcello، نويسنده , , B. Minetti، نويسنده , , N. Mirfakhraee، نويسنده , , F. Balestra، نويسنده , , L. Busso، نويسنده , , O. Denisov، نويسنده , , L. Ferrero، نويسنده , , R. Garfagnini، نويسنده , , A. Grasso، نويسنده , , et al.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
5
From page :
284
To page :
288
Abstract :
The results of a search for a possible evidence of a π+π+ resonant state in the n̄p→π+π+π− annihilation reaction with data collected by the OBELIX Experiment are presented. The study has been performed by means of a partial wave analysis in the frame of the isobar model. Production fractions for a possible π+π+ resonance have been evaluated. The observed effects at the π+π+ threshold may be described reasonably well by the contributions of f2(1270), f0(1500), f2(1565) and ρ(1450) states and their interferences, but a meaningful statistical indication for a π+π+ scalar state at about 1400 MeV emerges from the analysis.
Keywords :
Antineutron–proton annihilation in flight in three charged pions , Isobar model , Isospin 2 resonant states , View the MathML source exotic states
Journal title :
PHYSICS LETTERS B
Serial Year :
2000
Journal title :
PHYSICS LETTERS B
Record number :
913674
Link To Document :
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