Relevance of final state interactions in η′ → ηππ decays

被引：0
作者：
Sanz-Cillero, J. J. [1 ]
机构：
[1] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
来源：
IX INTERNATIONAL CONFERENCE ON QUARK CONFINEMENT AND THE HADRON SPECTRUM (QCHS IX) | 2011年 / 1343卷
关键词：
Chiral Lagrangians; 1/N-C expansion; eta(958); CHIRAL PERTURBATION-THEORY; MATRIX-ELEMENT; LARGE N; SYMMETRY; MODEL;
D O I：
10.1063/1.3575008
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
A study of the eta' -> eta pi pi Dalitz plot distribution is presented in this talk. The size of the branching ratio is properly understood within U(3) Chiral Perturbation Theory and Resonance Chiral Theory, in the framework of the 1/N-C expansion. Nonetheless, unitarity effects must be incorporated in order to achieve an appropriate description of the Dalitz slope parameters. After taking the final state interactions into account, our predictions become now in agreement with the available experimental measurements, although some clear differences show up with respect to previous theoretical estimates.
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页码：296 / 298
页数：3
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