The Productions and Strong Decays of $D_q(2S)$ and $B_q(2S)$
The Productions and Strong Decays of $D_q(2S)$ and $B_q(2S)$
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$D_q(2S)$ 和 $B_q(2S)$ 的产生式和强衰变
DOI:
10.1088/0954-3899/39/8/085006
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发表时间:
2012-07
期刊:
影响因子:
--
通讯作者:
Tianhong Wang
中科院分区:
文献类型:
--
作者:
Zhi-hui Wang;Guo-Li Wang;Jin-Mei Zhang;Tianhong Wang
We study the productions of first radial excited states $D_q(2S)$ ($q=u, d, s$) and $B_q(2S)$ in exclusive semi-leptonic $B_{q'}$ ($q'=u, d s, c$) decays by the improved Bethe-Salpeter method. These 2S states can be detected through their strong decays to ground mesons, where the strong decays are calculated by the low energy approximation as well as the impulse approximation. Some channels have ratios of order $10^{-4}$: $Br(B^+\to\bar D^0(2S)\ell^+{\nu_\ell})\times Br(\bar D^0(2S)\to \bar D^{*}\pi)\approx(4.9\pm4.0)\times10^{-4}$, $Br(B^0\to D^-(2S)\ell^+{\nu_\ell})\times Br(D^-(2S)\to \bar D^{*}\pi)\approx(4.4\pm3.4)\times10^{-4}$. These channels could be measured by the current B-factories. For $D_s(2S)$, we also obtain a relative large ratio: $Br(B_s^0\to D_s^-(2S)\ell^+{\nu_\ell})\times Br(D_s^-(2S)\to \bar D^{*}\bar K)\approx (9.9\pm14.9)\times10^{-4}$. Although there are discrepancies of the full decay width between the theoretical predictions of ${D}^0(2S)$ and experimental results of $D(2550)^0$, the new detected state $D(2550)^0$ is very likely the ${D}^0(2S)$ state.
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DOI:
10.1103/physrevd.51.6177
发表时间:
1994-10
期刊:
Physical review. D, Particles and fields
影响因子:
--
作者:
V. Belyaev;V. Braun;A. Khodjamirian;R. Ruckl
通讯作者:
V. Belyaev;V. Braun;A. Khodjamirian;R. Ruckl
影响因子:
5
作者:
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通讯作者:
Yu-Ming Wang;C. Lu
影响因子:
3.1
作者:
P. Maris;C. Roberts
通讯作者:
P. Maris;C. Roberts
影响因子:
5
作者:
D. Ebert;R. Faustov;R. Faustov;V. Galkin;V. Galkin
通讯作者:
D. Ebert;R. Faustov;R. Faustov;V. Galkin;V. Galkin
影响因子:
5
作者:
A. Anastassov;E. al.
通讯作者:
A. Anastassov;E. al.