通过J/Ψ→pp-,pN-*,N*N-*衰变,研究了Roper共振态的混杂态结构对衰变角分布和分支比的影响.计算结果表明,如果Roper共振态为纯混杂态,那么J/Ψ→pN-*,N*N-*的角分布几乎相等,而J/Ψ衰变到混杂态的衰变宽度还不到J/Ψ→pp-的1%,给出了Γ(J/Ψ→ N*p-)/Γ(J/Ψ→pp-)和Γ(J/Ψ→ N*N-*)/Γ(J/Ψ→pp-)随混合参数的变化关系,并讨论了在J/Ψ衰变中研究Roper混杂态结构的可能性.
参考文献
[1] | Senba K,Tanimoto M.Phys Rev,1983,D28 :2 786;Kopke L,Wermes N.Phy Rep,1989,174:67;Li Z,Burker V,Li Z J.Phy Rev,1992,D46:70. |
[2] | Senba K,Tanimoto M.Phys Rev,1983,D28 :2 786;Kopke L,Wermes N.Phy Rep,1989,174:67;Li Z,Burker V,Li Z J.Phy Rev,1992,D46:70. |
[3] | Senba K,Tanimoto M.Phys Rev,1983,D28 :2 786;Kopke L,Wermes N.Phy Rep,1989,174:67;Li Z,Burker V,Li Z J.Phy Rev,1992,D46:70. |
[4] | Barnes T,Close F E.Phys Lett,1983,B128:89. |
[5] | Golowich E,Haqq E,Karl G.Phys Rev,1983,D28:160. |
[6] | Martynenko A P.Sov J Nucl Phys,1991,54:488. |
[7] | Kisslinger J S,Li Z.Phys Rev,1995,D51:R5 986. |
[8] | Li Z.Phys Rev,1991,D44:2 841. |
[9] | Zou B S,Peng G X,Ping R G,et al.Eur Phys J,2001,A11:341;Zou B S,Li H B,et al.arXiv:hep-ph/0004220. |
[10] | Zou B S,Peng G X,Ping R G,et al.Eur Phys J,2001,A11:341;Zou B S,Li H B,et al.arXiv:hep-ph/0004220. |
[11] | Duncan A,Mueller A.Phys Lett,1980,B93:119;Brodsky S J,Lepage G P.Phys Rev,1981,D24:2 848;Chernyak V L,Zhitnitsky I R.Nucl Phys,1984,B246:52. |
[12] | Duncan A,Mueller A.Phys Lett,1980,B93:119;Brodsky S J,Lepage G P.Phys Rev,1981,D24:2 848;Chernyak V L,Zhitnitsky I R.Nucl Phys,1984,B246:52. |
[13] | Duncan A,Mueller A.Phys Lett,1980,B93:119;Brodsky S J,Lepage G P.Phys Rev,1981,D24:2 848;Chernyak V L,Zhitnitsky I R.Nucl Phys,1984,B246:52. |
[14] | Ping R G,Chiang H C,Zou B S.Phys Rev,2002,D66:054020. |
[15] | Liu L,Wetzed W.arXiv:hep-ph/9611250. |
[16] | Gay Ducati M G,Halzen H,Natale A A.Phys Rev,1993,D48:2 324;Mihara A,Natale A A.Phys Lett,2000,B482:378. |
[17] | Gay Ducati M G,Halzen H,Natale A A.Phys Rev,1993,D48:2 324;Mihara A,Natale A A.Phys Lett,2000,B482:378.[12]Chiang H C,Hufner J,Pirner H J.et al.Phys Lett,1994,B324:428. |
[18] | Gay Ducati M G,Halzen H,Natale A A.Phys Rev,1993,D48:2 324;Mihara A,Natale A A.Phys Lett,2000,B482:378.[12]Chiang H C,Hufner J,Pirner H J.et al.Phys Lett,1994,B324:428. |
[19] | Ping Ronggang,Jiang Huan Qing,Shen Pengnion,et al.Chin Phys Lett,2002,19:1 592. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%