This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1016/j.physletb.2017.10.049 in citations.
Please use the identifier: http://hdl.handle.net/2128/16990 in citations.
Isospin analysis of B → D ⁎ D ¯ K and the absence of the Z c (3900) in B decays
Isospin analysis of B → D ⁎ D ¯ K and the absence of the Z c (3900) in B decays
We study the isospin amplitudes in the exclusive $B$ to $D^*\bar{D}K$ decay process and fit the available $D^{*0}\bar{D}^0$ invariant mass distributions near threshold. The analysis demonstrates that the production of the isospin triplet $D^*\bar{D}$ state is highly suppressed compared to the isospi...
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Personal Name(s): | Yang, Zhi |
---|---|
Wang, Qian (Corresponding author) / Meißner, Ulf-G. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 Theorie der Starken Wechselwirkung; IAS-4 |
Published in: | Physics letters / B, 775 (2017) S. 50 - 53 |
Imprint: |
Amsterdam
North-Holland Publ.
2017
|
DOI: |
10.1016/j.physletb.2017.10.049 |
Document Type: |
Journal Article |
Research Program: |
TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik Computational Science and Mathematical Methods |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/16990 in citations.
We study the isospin amplitudes in the exclusive $B$ to $D^*\bar{D}K$ decay process and fit the available $D^{*0}\bar{D}^0$ invariant mass distributions near threshold. The analysis demonstrates that the production of the isospin triplet $D^*\bar{D}$ state is highly suppressed compared to the isospin singlet one. That explains why the $Z_c(3900)$ has not been found in $B$ decays. In addition, the production of the negative charge-parity state might be further suppressed in the heavy quark limit. These two reasons which are based on the molecular assumption offer the first explanation why the $Z_c(3900)$ is absent in $B$ decays. Further studies of the absence from both the experimental and the theoretical side is extremely important for understanding the nature of the $X(3872)$ and the $Z_c(3900)$. |