Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)

doi:10.1103/PhysRevD.84.074006

	Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)
	Chen, Dian-Yong 1,2,3; He, Jun 1,2,3; Li, Xue-Qian 5; Liu, Xiang 1,2,4
刊名	PHYSICAL REVIEW D
	2011-10-04
卷号	84
ISSN号	1550-7998
DOI	10.1103/PhysRevD.84.074006
英文摘要	Considering the defects of the previous work for estimating the anomalous production rates of e(+)e(-) -> Upsilon(1S)pi(+)pi(-), Upsilon(2S)pi(+)pi(-) near the peak of the Upsilon(5S) resonance at root s = 10.87 GeV [K. F. Chen et al. (Belle Collaboration), Phys. Rev. Lett. 100, 112001 (2008)], we suggest a new scenario where the contributions from the direct dipion transition and the final-state interactions interfere to result in not only the anomalously large production rates, but also line shapes of the differential widths consistent with experimental measurement when assuming the reactions are due to the dipion emission of Upsilon(5S). At the end, we raise a new puzzle that the predicted differential width d Gamma(Upsilon(5S) -> Upsilon(2S)pi(+)pi(-))/d cos0 has a discrepant trend from the data while other predictions are well in accord with the data. It should be further clarified by more accurate measurements carried by future experiments.
资助项目	Ministry of Education of China (FANEDD, DPFIHE, NCET)[200924] ; Ministry of Education of China (FANEDD, DPFIHE, NCET)[20090211120029] ; Ministry of Education of China (FANEDD, DPFIHE, NCET)[NCET-10-0442]
WOS关键词	DECAY
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000295541400005
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/56758]
专题	中国科学院近代物理研究所
通讯作者	Liu, Xiang
作者单位	1.Lanzhou Univ, Res Ctr Hadron, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, CSR Phys, Lanzhou 730000, Peoples R China 3.Inst Modern Phys CAS, Nucl Theory Grp, Lanzhou 730000, Peoples R China 4.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China 5.Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
推荐引用方式 GB/T 7714	Chen, Dian-Yong,He, Jun,Li, Xue-Qian,et al. Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)[J]. PHYSICAL REVIEW D,2011,84.
APA	Chen, Dian-Yong,He, Jun,Li, Xue-Qian,&Liu, Xiang.(2011).Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860).PHYSICAL REVIEW D,84.
MLA	Chen, Dian-Yong,et al."Dipion invariant mass distribution of the anomalous Upsilon(1S)pi(+) pi(-) and Upsilon(2S)pi(+) pi(-) production near the peak of Upsilon(10860)".PHYSICAL REVIEW D 84(2011).