UPSILON(3S)-]UPSILON(1S)PI-PI-DECAY - IS THE PI-PI-SPECTRUM PUZZLE AN INDICATION OF A B(B)OVER-BAR-Q(Q)OVER-BAR-RESONANCE

被引:44
作者
ANISOVICH, VV [1 ]
BUGG, DV [1 ]
SARANTSEV, AV [1 ]
ZOU, BS [1 ]
机构
[1] PETERSBURG NUCL PHYS INST, GATCHINA 188350, RUSSIA
关键词
D O I
10.1103/PhysRevD.51.R4619
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The ππ mass spectrum in Υ(3S)→Υ(1S)ππ has a peculiar double peak structure. This structure and the Υ(1S)π spectrum are reproduced by introducing a triangle singularity associated with a bb̄π resonance (JP=1+) in the mass range 10.4-10.8 GeV. © 1995 The American Physical Society.
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收藏
页码:R4619 / R4622
页数:4
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