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- W2243123047 abstract "In the heavy quark limit, we establish the Bethe-Salpeter equations for the ground state $QQ^{prime} bar u bar d$ containing one heavy diquark $QQ^{prime}$ ($Q, Q^{prime}=b$ or $c$) and one light antidiquark $bar u bar d$. We solve the Bethe-Salpeter equations numerically in the covariant instantaneous approximations with the kernels containing a scalar confinement term and a one-gluon-exchange term. Numerical solutions for the Bethe-Salpeter wave functions are presented. The results show that the masses of $bb bar u bar d$, $bc bar u bar d$, and $cc bar u bar d$ bound states lie below the threshold of $bar{B}^{*0},B^-$ or $B^0,{B^*}^-$, $B^-D^+$ or $bar{B}^{0} D^0$, and $D^+,{D^*}^0$ or ${D^*}^+,D^0$ mesons, respectively. The ground states $QQ^{prime} bar u bar d$ may exist and we expect the forthcoming experimental data to confirm them." @default.
- W2243123047 created "2016-06-24" @default.
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- W2243123047 date "2013-09-30" @default.
- W2243123047 modified "2023-09-26" @default.
- W2243123047 title "$QQ^{prime} bar u bar d$ bound state in the Bethe-Salpeter equation approach" @default.
- W2243123047 hasPublicationYear "2013" @default.
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