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Author  |
Li, H.P.; Liang, W.H.; Xiao, C.W.; Xie, J.J.; Oset, E. |
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Title |
Determination of the binding and DK probability of the Ds0*(2317) from the (DK)- mass distributions in Λb→Λ(DK)- decays |
Type |
Journal Article |
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Year |
2025 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
85 |
Issue |
6 |
Pages |
616 - 9pp |
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Abstract |
We study the Lambda b ->Lambda cD0K- and Lambda b ->Lambda cD-K0 decays which proceed via a Cabibbo and Nc favored process of external emission, and we determine the D0K- and D-K0 mass distributions close to the DK threshold. For this, we use the tree level contribution plus the rescattering of the meson-meson components, using the extension of the local hidden gauge approach to the charm sector that produces the Ds0*(2317) resonance. We observe a large enhancement of the mass distributions close to threshold due to the presence of this resonance below threshold. Next we undertake the inverse problem of extracting the maximum information on the interaction of the DK channels from these distributions, and using the resampling method we find that from these data one can obtain precise values of the scattering lengths and effective ranges, the existence of an I=0 bound state with a precision of about 4MeV in the mass, plus the DK molecular probability of this state with reasonable precision. Given the fact that the Lambda b ->Lambda cD0K- decay is already measured by the LHCb collaboration, it is expected that in the next runs with more statistics of the decay, these mass distributions can be measured with precision and the method proposed here can be used to determine the nature of the Ds0*(2317), which is still an issue of debate. |
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Address |
[Li, Hai-Peng; Liang, Wei-Hong; Xiao, Chu-Wen; Oset, Eulogio] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: liangwh@gxnu.edu.cn; |
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Publisher |
Springer |
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Language |
English |
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Original Title |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1434-6044 |
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Conference |
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Notes |
WOS:001502753100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6699 |
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