f1(1285) decays into a0(980) π0, f0(980) π0 and isospin breaking

被引：62

作者：

Aceti, F. ^{[1
,2
]}

Dias, J. M. ^{[1
,2
,3
]}

Oset, E. ^{[1
,2
]}

机构：

[1] Univ Valencia, Dept Fis Teor, Valencia 46071, Spain

[2] Univ Valencia, IFIC, Ctr Mixto, CSIC,Inst Invest Paterna, Valencia 46071, Spain

[3] Univ Sao Paulo, Inst Fis, BR-05389970 Sao Paulo, SP, Brazil

来源：

EUROPEAN PHYSICAL JOURNAL A | 2015年 / 51卷 / 04期

关键词：

PLUS-QUADRUPOLE MODEL; CHIRAL PERTURBATION-THEORY; HIDDEN LOCAL SYMMETRY; NUCLEAR DEFORMATIONS; ENERGY LEVELS; GAUGE BOSON; STATES; DYNAMICS; TRANSITION; MESON;

D O I：

10.1140/epja/i2015-15048-5

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We evaluate the decay width for the processes f1(1285). p 0 a0(980) and f1(1285). p 0 f0(980) taking into account that all three resonances are dynamically generated from the meson- meson interaction, the f1(1285) from K* _ K - c. c. and the a0(980), f0(980) from p., K _ K and pp, K _ K, respectively. We use a triangular mechanism similar to that of.(1405). pp., which provides a decay width for f1(1285). p 0 a0(980) with a branching fraction of the order of 30%, in agreement with experiment. At the same time we evaluate the decay width for the isospin- forbidden f1(1285). p 0 f0(980), which appears when we consider different masses for the charged and neutral kaons, and show that it is much more suppressed than in the.(1405). pp. case, but gives rise to a narrow shape of the p + p- distribution similar to the one found in the eta(1405) -> pi pi eta decay.

引用

页码：1 / 9

页数：9

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