论文标题
弱b腐烂到牙齿兴奋的魅力介子
Weak B Decays into Orbitally Excited Charmed Mesons
论文作者
论文摘要
Babar合作最近报道了$ b $ Meson的半衰减分支机构分支为最终状态，并带有充电和中性$ d_ {1}}（2420）$和$ d_ {2}^{\ ast}（2460）$，两个狭窄的或者激动的魅力迷住了。我们在组成夸克模型的框架内评估了这些分支部分，其中一个步骤涉及半衰减的衰变，另一个涉及一个由强过程介导的。我们的结果与实验数据一致。
The BaBar Collaboration has recently reported branching fractions for semileptonic decays of the $B$ meson into final states with charged and neutral $D_{1}(2420)$ and $D_{2}^{\ast}(2460)$, two narrow orbitally excited charmed mesons. We evaluate these branching fractions within the framework of a constituent quark model in two steps, one which involves a semileptonic decay and the other one mediated by a strong process. Our results are in agreement with the experimental data.
