Xiang Liu

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hep-ph2008★ 16 cited

The two-body open charm decays of $Z^{+} (4430)$

Xiang Liu, Bo Zhang, Shi-Lin Zhu

The two-body open charm decays $Z^{+} (4430) \to D^{+} D ˉ^{* 0}, D^{*+} D ˉ^{0}, D^{*+} D ˉ^{* 0}$ occur through the re-scattering mechanism and their branching ratios are stro…

hep-ph2008★ 83 cited

$Z^{+} (4430)$ as a $D_{1}^{'} D^{}$ ( $D_{1} D^{}$ ) molecular state

Xiang Liu, Yan-Rui Liu, Wei-Zhen Deng +1

We reexamine whether $Z^{+} (4430)$ could be a $D_{1}^{'} - D^{*}$ or $D_{1} - D^{*}$ molecular state after considering both the pion and $σ$ meson exchange potentials and introducing the form f…

hep-ph2008★ 76 cited

The Y(2175) State in the QCD Sum Rule

Hua-Xing Chen, Xiang Liu, Atsushi Hosaka +1

We study the mass of the state Y(2175) of J^{PC} = 1^{--} in the QCD sum rule. We construct both the diquark-antidiquark currents (ss)(s_bar s_bar) and the meson-meson currents (s_…

hep-ph2008★ 204 cited

Is X(3872) {\sl Really} a Molecular State?

Yan-Rui Liu, Xiang Liu, Wei-Zhen Deng +1

After taking into account both the pion and sigma meson exchange potential, we have performed a dynamical calculation of the $D^{0} D ˉ^{* 0}$ system. The $σ$ meson exchange pot…

hep-ph2007★ 108 cited

Is Z^+(4430) a loosely bound molecular state?

Xiang Liu, Yan-Rui Liu, Wei-Zhen Deng +1

Since $Z^{+} (4430)$ lies very close to the threshold of $D^{*} D ˉ_{1}$ , we investigate whether $Z^{+} (4430)$ could be a loosely bound S-wave state of $D^{*} D ˉ_{1}$ or $D^\ast{…

hep-ph2007★ 120 cited

Bottom Baryons

Xiang Liu, Hua-Xing Chen, Yan-Rui Liu +2

Recently CDF and D0 collaborations observed several bottom baryons. In this work we perform a systematic study of the masses of bottom baryons up to $1/ m_{Q}$ in the framework of hea…

The two-body open charm decays of Z+(4430)