Λ resonances studied in Kp→Σ0π0 in a chiral quark model

  • A chiral quark-model approach is extended to the study of the KN scattering at low energies. The process of K-p→Σ0π0 at PK\≤800 MeV/c (i.e. the center mass energy W≤1.7 GeV) is investigated. The Λ(1405)S01 dominates the reactions over the energy region considered here. Around PK=400 MeV/c, the Λ(1520)D03 is responsible for a strong resonant peak in the cross section. Our analysis suggests that there exist configuration mixings within the Λ(1405)S01 and Λ(1670)S01 as admixtures of the [70,21,1/2] and [70,28,1/2] configurations. The Λ(1405)S01 is dominated by [70,21,1/2], and Λ(1670)S01 by [70,28,1/2]. The non-resonant background contributions, i.e. u-channel and $t$-channel, also play important roles in the explanation of the angular distributions due to amplitude interferences.

  • 加载中
  • [1] . Isgur N, Karl G. Phys. Rev. D, 1978, 18: 41872. Capstick S, Isgur N. Phys. Rev. D, 1986, 34: 28093. Loring U, Metsch B C, Petry H R. Eur. Phys. J. A, 2001,10: 4474. Dalitz R H, Tuan S F. Phys. Rev. Lett., 1959, 2: 425;Annals Phys., 1960, 10: 3075. Oset E, Ramos A. Nucl. Phys. A, 1998, 635: 996. Oller J A, Meissner U G. Phys. Lett. B, 2001, 500: 2637. Jido D, Oller J A, Oset E, Ramos A, Meissner U G. Nucl.Phys. A, 2003, 725: 1818. Garcia-Recio C, Nieves J, Ruiz Arriola E, Vicente Vacas MJ. Phys. Rev. D, 2003, 67: 0760099. Roca L, Hyodo T, Jido D. Nucl. Phys. A, 2008, 809: 6510. Manweiler R et al. Phys. Rev. C, 2008, 77: 01520511. Abdullah T, Close F E. Phys. Rev. D, 1972, 5: 233212. Close F E, LI Z P. Phys. Rev. D, 1990, 42: 219413. ZHAO Q, Al-Khalili J S, Bennhold C. Phys. Rev. C, 2001,64: 052201(R)14. ZHAO Q, Saghai B, LI Z P. J. Phys. G, 2002, 28: 129315. ZHAO Q, LI Z P, Bennhold C. Phys. Rev. C, 1998, 58:2393; Phys. Lett. B, 1998, 436: 4216. HE J, Saghai B, LI Z P. Phys. Rev. C, 2008, 78: 03520417. LI Z P. Phys. Rev. D, 1993, 48: 3070; 1994, 50: 5639;1995, 52: 4961; C, 1995, 52: 164818. LI Z P, YE H X, LU M H. Phys. Rev. C, 1997, 56: 109919. ZHAO Q, Al-Khalili J S, LI Z P, Workman R L. Phys. Rev.C, 2002, 65: 06520420. ZHONG X H, ZHAO Q, HE J, Saghai B. Phys. Rev. C,2007. 76: 06520521. ZHONG X H, ZHAO Q. Phys. Rev. D, 2008, 77: 074008;Phys. Rev. D, 2008, 78: 01402922. Isgur N, Karl G. Phys. Lett. B, 1977, 72: 109; Phys. Rev.D, 1979, 19: 2653 [Erratum-ibid. 1981, 23: 817]; 1979,20: 119123. ZHONG X H, ZHAO Q. Phys. Rev. C, 2009, 79: 04520224. Particle Data Group, Y. M. Yao et al. J. Phys. G, 2006,33: 125. Oller J A, Prades J, Verbeni M. Phys. Rev. Lett., 2005, 95:17250226. Oller J A. Eur. Phys. J. A, 2006, 28: 6327. Armenteros R et al. Nucl. Phys. B, 1970, 21: 1528. London G W et al. Nucl. Phys. B, 1975, 85: 28929. Baxter D F et al. Nucl. Phys. B, 1973, 67: 12530. Berley D et al. Phys. Rev. D, 1970, 1: 1996 [Erratum-ibid.D, 1971, 3: 2297]31. Mast T S, Alston-Garnjost M et al. Phys. Rev. D, 1975,11: 3078
  • 加载中

Get Citation
ZHONG Xian-Hui and ZHAO Qiang. Λ resonances studied in Kp→Σ0π0 in a chiral quark model[J]. Chinese Physics C, 2009, 33(12): 1373-1376. doi: 10.1088/1674-1137/33/12/058
ZHONG Xian-Hui and ZHAO Qiang. Λ resonances studied in Kp→Σ0π0 in a chiral quark model[J]. Chinese Physics C, 2009, 33(12): 1373-1376.  doi: 10.1088/1674-1137/33/12/058 shu
Milestone
Received: 2009-08-07
Revised: 1900-01-01
Article Metric

Article Views(2667)
PDF Downloads(714)
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

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Λ resonances studied in Kp→Σ0π0 in a chiral quark model

    Corresponding author: ZHONG Xian-Hui,

Abstract: 

A chiral quark-model approach is extended to the study of the KN scattering at low energies. The process of K-p→Σ0π0 at PK\≤800 MeV/c (i.e. the center mass energy W≤1.7 GeV) is investigated. The Λ(1405)S01 dominates the reactions over the energy region considered here. Around PK=400 MeV/c, the Λ(1520)D03 is responsible for a strong resonant peak in the cross section. Our analysis suggests that there exist configuration mixings within the Λ(1405)S01 and Λ(1670)S01 as admixtures of the [70,21,1/2] and [70,28,1/2] configurations. The Λ(1405)S01 is dominated by [70,21,1/2], and Λ(1670)S01 by [70,28,1/2]. The non-resonant background contributions, i.e. u-channel and $t$-channel, also play important roles in the explanation of the angular distributions due to amplitude interferences.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return