CAJ | 학술논문

在分子态结构的假设下,利用手征么正模型研究了D*0(2308)和B*0的可能结构.通过研究重子-赝标介子相互作用,找到了一些可能的分子态.结果表明:在带奇异数的系统中,存在一个质量为2.312±0.041GeV的DK束缚态,它可以被解释为实验上发现的D*s0(2317).与此同时,在非奇异系统中,存在一个与之对应的、质量为2.1GeV的宽度较大的态和一个对应的、质量为2.44GeV的宽度较小的态.这两个态应对应于D*0.因此,分子态结构只能是D*0(2308)一个分量.计算结果还预言了一些B*s0和B*0态.其中质量为5.725±0.039GeV的B(K)束缚态可以被解释为B*s0(5725),而预言的B*0(5536)和B*0(5819)应为与B*s0(5725)相对应的非奇异态.
재분자태결구적가설하,이용수정요정모형연구료D*0(2308)화B*0적가능결구.통과연구중자-안표개자상호작용,조도료일사가능적분자태.결과표명:재대기이수적계통중,존재일개질량위2.312±0.041GeV적DK속박태,타가이피해석위실험상발현적D*s0(2317).여차동시,재비기이계통중,존재일개여지대응적、질량위2.1GeV적관도교대적태화일개대응적、질량위2.44GeV적관도교소적태.저량개태응대응우D*0.인차,분자태결구지능시D*0(2308)일개분량.계산결과환예언료일사B*s0화B*0태.기중질량위5.725±0.039GeV적B(K)속박태가이피해석위B*s0(5725),이예언적B*0(5536)화B*0(5819)응위여B*s0(5725)상대응적비기이태.
D*0(2308) and B*0 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 D*s0(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 D*0 state. Therefore, D*0(2308) cannot be explained by the assumption of the molecular structure only.Moreover, B*s0 and B*0 states are also predicted. A B(K) bound state with the mass of 5.725±0.039GeV which can be assigned to the B*s0(5725) state and B*0(5536) and B*0(5819) should be considered as the corresponding states in the non-strange sector.