Chiral Quark Model Study of udss Tetraquark States

ZHANG Zong-Ye; WANG Wen-Ling; HUANG Fei; YU You-Wen; LIU Feng

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2007, Vol. 31> Issue(9) : 887-891

Chiral Quark Model Study of udss Tetraquark States

Institute of High Energy Physics, CAS, Beijing 100049, China2 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China3 CCAST World Laboratory, Beijing 100080, China

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Abstract：
The energies of the low-lying isoscalar and isovector udss configurations with spin-parity J^P=0⁺, 1⁺, and 2⁺ are calculated in the chiral SU(3) quark model and the extended chiral SU(3) quark model by using the variational method. The model parameters are determined by the same method as in our previous work, and they still can satisfactorily describes the nucleon-nucleon scattering phase shifts and the hyperon-nucleon cross sections. The s-channel annihilation interaction is fixed by the masses of K and K^* mesons, and the configuration mixing is considered. The results show that the udss configuration with I=0 and J^P=1⁺ lies lower than the K^*K^* threshold, and furthermore, this state has a very small KK^* component, thus it can be treated as a possible tetraquark candidate.

References

[1]

. Ja e R L. Phys. Rev. Lett., 1977, 38: 1952. Nakano T et al(LEPS Collaboration). Phys. Rev. Lett.,2003, 91: 0120023. Ja e R L. Phys. Rev., 1977, D15: 267; 1977, 15: 2814. Vijande J, Fernandez F, Valcarce A et al. Eur. Phys. J.,2004, A19: 3835. Burns T J, Close F E, Dudek J J. Phys. Rev., 2005, D71:0140176. Karliner M, Lipkin H J. Phys. Lett., 2005, B612: 1977. Kanada-En'yo Y, Morimatsu O, Nishikawa T. Phys. Rev.,2005, D71: 0940058. CUI Y, CHEN X L, DENG W Z et al. Phys. Rev., 2006,D73: 0140189. CHEN H X, Hosaka A, ZHU S L. hep-ph/060404910. ZHANG Z Y et al. Nucl. Phys., 1997, A625: 5911. DAI L R, ZHANG Z Y, YU Y W et al. Nucl. Phys., 2003,A727: 32112. HUANG F, ZHANG Z Y. Phys. Rev., 2005, C72: 02400313. HUANG F, ZHANG Z Y, YU Y W. Phys. Rev., 2004, C70:04400414. HUANG F, ZHANG Z Y. Phys. Rev., 2004, C70: 06400415. HUANG F, ZHANG D, ZHANG Z Y et al. Phys. Rev.,2005, C71: 06400116. HUANG F, ZHANG Z Y. Phys. Rev., 2005, C72: 06820117. HUANG F, ZHANG Z Y, YU Y W et al. Phys. Lett., 2004,B586: 6918. ZHANG D, HUANG F, ZHANG Z Y et al. Nuc. Phys.,2005, A756: 215

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ZHANG Zong-Ye, WANG Wen-Ling, HUANG Fei, YU You-Wen and LIU Feng. Chiral Quark Model Study of udss Tetraquark States[J]. Chinese Physics C, 2007, 31(9): 887-891.

ZHANG Zong-Ye, WANG Wen-Ling, HUANG Fei, YU You-Wen and LIU Feng. Chiral Quark Model Study of udss Tetraquark States[J]. Chinese Physics C, 2007, 31(9): 887-891. shu

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Received: 2007-04-25
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Chiral Quark Model Study of udss Tetraquark States

Corresponding author: WANG Wen-Ling,

Institute of High Energy Physics, CAS, Beijing 100049, China2 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China3 CCAST World Laboratory, Beijing 100080, China

Received Date: 2007-04-25
Accepted Date: 1900-01-01
Available Online: 2007-09-05

Abstract: The energies of the low-lying isoscalar and isovector udss configurations with spin-parity J^P=0⁺, 1⁺, and 2⁺ are calculated in the chiral SU(3) quark model and the extended chiral SU(3) quark model by using the variational method. The model parameters are determined by the same method as in our previous work, and they still can satisfactorily describes the nucleon-nucleon scattering phase shifts and the hyperon-nucleon cross sections. The s-channel annihilation interaction is fixed by the masses of K and K^* mesons, and the configuration mixing is considered. The results show that the udss configuration with I=0 and J^P=1⁺ lies lower than the K^*K^* threshold, and furthermore, this state has a very small KK^* component, thus it can be treated as a possible tetraquark candidate.