التفاصيل البيبلوغرافية
| العنوان: |
Decays of B, Bs and Bc to D-wave heavy-light mesons. |
| المؤلفون: |
Qiang Li, Tianhong Wang, Yue Jiang, Han Yuan, Tian Zhou, Guo-Li Wang |
| المصدر: |
European Physical Journal C -- Particles & Fields; Jan2017, Vol. 77 Issue 1, p1-15, 15p |
| مصطلحات موضوعية: |
MESON decay, HADRONIC atoms, BETHE-Salpeter equation, BRANCHING ratios, MOMENTUM wave function |
| مستخلص: |
We study the weak decays of B(s) and Bc into D-wave heavy-light mesons, including J P = 2- (D(s)2, D'(s)2, B(s)2, B'(s)2) and 3- (D∗(s)3, B*(s)3) states. The weak decay hadronic matrix elements are obtained based on the instantaneous Bethe-Salpeter method. The branching ratios for the B decays are B[ B →D²eνe] = 1.1-0.3 +0.3 ×10-3, B[ B → D' 2eνe] = 4.1-0.8+0.9 × 10-4, and B[ B → D∗ 3e¯νe] = 1.0-0.2 +0.2 ×10-3, respectively. For the semi-electronic decays of Bs to Ds2, D's2, and D∗ s3, the corresponding branching ratios are 1.7-0.5 +0.5 ×10-3, 5.2-1.5+1.6×10-4, and 1.5-0.4 +0.4 ×10-3, respectively. The branching ratios of the semi-electronic decays of Bc to D-wave D mesons are in the order of 10-5. We also obtained the forward-backward asymmetry, angular spectra, and lepton momentum spectra. In particular the distribution of decay widths for the 2- states D2 and D'² varying along with mixing angle are presented. [ABSTRACT FROM AUTHOR] |
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