Dynamically generated 1+ heavy mesons

Dynamically generated 1+ heavy mesons
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动态生成1个重介子

DOI:
10.1016/j.physletb.2007.01.050
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发表时间:
2006-10
期刊:
影响因子:
4.4
通讯作者:
--
中科院分区:
物理与天体物理2区
文献类型:
--
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利用重手征么正方法研究了重矢量介子与轻赝标介子的S波相互作用。通过在相应的Riemann面中寻找幺正散射振幅的极点,找到了几个1+重态,特别是一个质量为2.462± 0.010GeV的D_(10)K束缚态,它应该与最近观测到的Ds 1(2460)态相关联.以同样的方式,预测了底部扇区质量为5.778±0.007 GeV的B K束缚态(Bs 1)。计算了I=1/2通道中动态产生的D1和B1态的能谱。一个广泛的国家和一个狭窄的国家都发现在魅力和底部部门。进一步研究了预测态的耦合常数和衰变宽度。
By using a heavy chiral unitary approach, we study the S wave interactions between heavy vector meson and light pseudoscalar meson. By searching for poles of the unitary scattering amplitudes in the appropriate Riemann sheets, several 1+heavy states are found. In particular, a D∗K bound state with a mass of 2.462±0.010 GeV which should be associated with the recently observed Ds1(2460) state is obtained. In the same way, a B∗K¯ bound state (Bs1) with mass of 5.778±0.007 GeV in the bottom sector is predicted. The spectra of the dynamically generated D1and B1states in the I=1/2 channel are also calculated. One broad state and one narrow state are found in both the charmed and bottom sectors. The coupling constants and decay widths of the predicted states are further investigated.
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期刊: Physical Review D
影响因子: 5
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