Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays
We study the isospin amplitudes in the exclusive B to DâD¯K decay process and fit the available Dâ0D¯0 invariant mass distributions near threshold. The analysis demonstrates that the production of the isospin triplet DâD¯ state is highly suppressed compared to the isospin singlet one. That explai...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-12-01
|
| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317308614 |
| _version_ | 1811300438622863360 |
|---|---|
| author | Zhi Yang Qian Wang Ulf-G. MeiÃner |
| author_facet | Zhi Yang Qian Wang Ulf-G. MeiÃner |
| author_sort | Zhi Yang |
| collection | DOAJ |
| description | We study the isospin amplitudes in the exclusive B to DâD¯K decay process and fit the available Dâ0D¯0 invariant mass distributions near threshold. The analysis demonstrates that the production of the isospin triplet DâD¯ state is highly suppressed compared to the isospin singlet one. That explains why the Zc(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 Zc(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 Zc(3900). |
| first_indexed | 2024-04-13T06:51:10Z |
| format | Article |
| id | doaj.art-459e5ab7c90e454b969fc7c0b0758641 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-13T06:51:10Z |
| publishDate | 2017-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-459e5ab7c90e454b969fc7c0b07586412022-12-22T02:57:23ZengElsevierPhysics Letters B0370-26932017-12-017755053Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decaysZhi Yang0Qian Wang1Ulf-G. MeiÃner2Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaHelmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany; Corresponding author.Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany; Institut für Kernphysik, Institute for Advanced Simulation, and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, GermanyWe study the isospin amplitudes in the exclusive B to DâD¯K decay process and fit the available Dâ0D¯0 invariant mass distributions near threshold. The analysis demonstrates that the production of the isospin triplet DâD¯ state is highly suppressed compared to the isospin singlet one. That explains why the Zc(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 Zc(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 Zc(3900).http://www.sciencedirect.com/science/article/pii/S0370269317308614 |
| spellingShingle | Zhi Yang Qian Wang Ulf-G. MeiÃner Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays Physics Letters B |
| title | Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays |
| title_full | Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays |
| title_fullStr | Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays |
| title_full_unstemmed | Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays |
| title_short | Isospin analysis of BâDâD¯K and the absence of the Zc(3900) in B decays |
| title_sort | isospin analysis of badada¯k and the absence of the zc 3900 in b decays |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317308614 |
| work_keys_str_mv | AT zhiyang isospinanalysisofbadadakandtheabsenceofthezc3900inbdecays AT qianwang isospinanalysisofbadadakandtheabsenceofthezc3900inbdecays AT ulfgmeianer isospinanalysisofbadadakandtheabsenceofthezc3900inbdecays |