Dalitz plot structure in D0 → π+π-π0

被引：11

作者：

Bhattacharya, Bhubanjyoti ^{[1
,2
]}

Chiang, Cheng-Wei ^{[3
,4
,5
]}

Rosner, Jonathan L. ^{[1
,2
]}

机构：

[1] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[2] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[3] Natl Cent Univ, Dept Phys, Chungli 320, Taiwan

[4] Natl Cent Univ, Ctr Math & Theoret Phys, Chungli 320, Taiwan

[5] Acad Sinica, Inst Phys, Taipei 115, Taiwan

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 09期

基金：

美国能源部;

关键词：

D O I：

10.1103/PhysRevD.81.096008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The BABAR Collaboration has pointed out that D-0 -> pi(+)pi(-)pi(0) is dominated by an isospin-zero final state, leading to nearly complete depletion of the Dalitz plot along all three diagonals. In flavor-SU(3) approaches to charmed particle decays to a light vector and a light pseudoscalar particle, this behavior is seen, but does not appear to have a fundamental origin. Instead, it arises as a result of approximate cancellation of higher-isospin combinations of several types of amplitudes: color-favored tree, color-suppressed tree, and exchange. Interpretation in terms of a direct-channel effect would require an exotic resonance, with spin, parity, and charge-conjugation eigenvalues J(PC) = 0(--)

引用

页数：5

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