ON THE SENSITIVE AREA OF SPIN-PARITY ANALYSIS FOR J/ψ RADIATIVE DECAY PRODUCTS INTO TWO PSEUDOSCALARS

YAN Wu-Guang

Chinese Physics C> 1990, Vol. 14> Issue(3) : 193-199

ON THE SENSITIVE AREA OF SPIN-PARITY ANALYSIS FOR J/ψ RADIATIVE DECAY PRODUCTS INTO TWO PSEUDOSCALARS

YAN Wu-Guang ^,

Institute of High Energy Physics,Academia Sinica

Abstract
HTML
Reference
Related

PDF

Abstract：
The spin-parity analysis of the J/ψ radiative decay products into two pseudoscalars usually uses the angular distribution calculated by the helicity amplitude formalism.This paper investigated the sensitivity of this method and pointed out the followings; 1) there really exists some insensitive area; 2).unfortunately,θ(1720) falls into the insensitive area of 2⁺-0⁺ distinction; so the spin of θ(1720) has not been finally established yet; 3).according to the Mark-3 data,for the newly observed very narrow peak ξ(2230),the spin 0⁺ assignment can be ruled out.

References

[1]

T. Z. RUAN, et al., Proceedings of the BIMP Symposium on Heavy Flavor Physics, p. 410-418, Aue.11, 1988, Beijing; T. Z. RUAN, et al., to be published in High Energy Physics and Nuclear Physics.[2] 赵佩英等，物理学报，26(1977),16;C. S. GAO, et al., Proceedings of the Workshop on Colliding Beam Physics, p. 243, June, 1984, Beijing.[3] M. JACOB and G. C. WICK,Ann. Phys., (NY) 7(1959), 404;K. F. EINSWEILER, SLAG Report 272(1984);R. M. BALTRUSAITIS et al. Phys. Rev., D 35(1987), 2077.[4] C.EDWARDS et al., Phys, Rev. Lett., 48(1982), 458;C.EDWARDS et al., Phys. Rev.，D25(1982), 3065.[5] M. E. B. FRANKLIN, SLAC Report 254(1982).[6] J. E, AUGUSTIN et al., Orsay preprint, LAL/85-27(1985);J. E. AUGUSTIN et al., Phys. Rev. Lett., 60(1988), 2238.

Access

Get Citation

YAN Wu-Guang. ON THE SENSITIVE AREA OF SPIN-PARITY ANALYSIS FOR J/ψ RADIATIVE DECAY PRODUCTS INTO TWO PSEUDOSCALARS[J]. Chinese Physics C, 1990, 14(3): 193-199.

YAN Wu-Guang. ON THE SENSITIVE AREA OF SPIN-PARITY ANALYSIS FOR J/ψ RADIATIVE DECAY PRODUCTS INTO TWO PSEUDOSCALARS[J]. Chinese Physics C, 1990, 14(3): 193-199. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(3546)
PDF Downloads(482)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

ON THE SENSITIVE AREA OF SPIN-PARITY ANALYSIS FOR J/ψ RADIATIVE DECAY PRODUCTS INTO TWO PSEUDOSCALARS

YAN Wu-Guang ^,

Corresponding author: YAN Wu-Guang,

Institute of High Energy Physics,Academia Sinica

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1990-03-05

Abstract: The spin-parity analysis of the J/ψ radiative decay products into two pseudoscalars usually uses the angular distribution calculated by the helicity amplitude formalism.This paper investigated the sensitivity of this method and pointed out the followings; 1) there really exists some insensitive area; 2).unfortunately,θ(1720) falls into the insensitive area of 2⁺-0⁺ distinction; so the spin of θ(1720) has not been finally established yet; 3).according to the Mark-3 data,for the newly observed very narrow peak ξ(2230),the spin 0⁺ assignment can be ruled out.