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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) : 870-873 

D0 Non-strange 0+ Heavy Mesons Have Molecular Structure in the Heavy Chiral Unitary Approach

  •  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China2 Southwest University, Chongqing 400715, China3 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China

  • D0(2308) and B0 resonances are discussed with the molecular state assumption in the heavy chiral unitary approach. By studying the heavy baryon-pseudoscalar meson interaction, some molecular states are found. It is shown that there exists a bound DK state with a mass of about 2.312±0.041GeV in the strange sector, which can be identified as Ds0(2317). While in the non-strange sector, one wide-width state at about 2.1GeV and one narrow-width state at about 2.44GeV are found. These states should be associated with the D0 state. Therefore, D0(2308) cannot be explained by the assumption of the molecular structure only. Moreover, Bs0 and B0 states are also predicted. A BK bound state with the mass of 5.725±0.039GeV which can be assigned to the Bs0(5725) state and B0(5536) and B0(5819) should be considered as the corresponding states in the non-strange sector.
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    [1] . Aubert B et al. (BABAR Collaboration). Phys. Rev. Lett.,2003, 90: 2420012. Besson D et al. (CLEO Collaboration). Phys. Rev., 2003,D68: 032002; Krokovny P et al. (Belle Collaboration).Phys. Rev. Lett., 2003, 91: 2620023. Swanson E S. Phys. Rept., 2006, 429: 2434. Kim H et al. Phys. Rev., 2005, D72: 074012; Maiani L et al. Phys. Rev., 2005, D71: 014028; CHEN Y Q et al. Phys.Rev. Lett., 2004, 93: 2320015. Szczepaniak A P. Phys. Lett., 2003, B567: 23; Barnes T et al. Phys. Rev., 2003, D68: 054006; Bali G. Phys. Rev.,2003, D68: 071501; Hofmann J et al. Nucl. Phys., 2004,A733: 1426. van Bevern E et al. Phys. Rev. Lett., 2003, 91: 0120037. Vijande J et al. Phys. Rev., 2006, D73: 0340028. Abe K et al. (Belle Collaboration). Phys. Rev., 2004, D69:1120029. Link J M et al. (FOCUS Collaboration). Phys. Lett., 2004,B586: 1110. Lee T et al. hep-ph/041221011. Bracco M E et al. Phys. Lett., 2005, B624: 21712. Oller J A, Oset E. Nucl. Phys., 1997, A620: 438; 1999,652: 40713. Guo F K et al. Nucl. Phys., 2006, A773: 7814. YAN T M et al. Phys. Rev., 1992, D46: 114815. GUO F K et al. Phys. Lett., 2006, B641: 27816. Hofmann J et al. Nucl. Phys., 2004, A733: 142; Kolomeit-sev E E et al. Phys. Lett., 2004, B582: 39

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SHEN Peng-Nian, GUO Feng-Kun, JIANG Huan-Qing and ZOU Bing-Song. D0 Non-strange 0+ Heavy Mesons Have Molecular Structure in the Heavy Chiral Unitary Approach[J]. Chinese Physics C, 2007, 31(9): 870-873.
SHEN Peng-Nian, GUO Feng-Kun, JIANG Huan-Qing and ZOU Bing-Song. D0 Non-strange 0+ Heavy Mesons Have Molecular Structure in the Heavy Chiral Unitary Approach[J]. Chinese Physics C, 2007, 31(9): 870-873. shu
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Received: 2007-04-25
Revised: 1900-01-01
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D0 Non-strange 0+ Heavy Mesons Have Molecular Structure in the Heavy Chiral Unitary Approach

    Corresponding author: SHEN Peng-Nian,
  • Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China2 Southwest University, Chongqing 400715, China3 Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China
  • Received Date: 2007-04-25
  • Accepted Date: 1900-01-01
  • Available Online: 2007-09-05

Abstract: D0(2308) and B0 resonances are discussed with the molecular state assumption in the heavy chiral unitary approach. By studying the heavy baryon-pseudoscalar meson interaction, some molecular states are found. It is shown that there exists a bound DK state with a mass of about 2.312±0.041GeV in the strange sector, which can be identified as Ds0(2317). While in the non-strange sector, one wide-width state at about 2.1GeV and one narrow-width state at about 2.44GeV are found. These states should be associated with the D0 state. Therefore, D0(2308) cannot be explained by the assumption of the molecular structure only. Moreover, Bs0 and B0 states are also predicted. A BK bound state with the mass of 5.725±0.039GeV which can be assigned to the Bs0(5725) state and B0(5536) and B0(5819) should be considered as the corresponding states in the non-strange sector.

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