Can the X(4350) narrow structure be a 1−+ exotic state?

Using the QCD sum rules we test if the new narrow structure, the X(4350) recently observed by the Belle Collaboration, can be described as a JPC=1−+ exotic Ds∗Ds0∗ molecular state. We consider the contributions of condensates up to dimension eight, we work at leading order in αs and we keep terms wh...

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Bibliographic Details
Published in:Physics letters. B 2010-06, Vol.690 (2), p.141-144
Main Authors: Albuquerque, Raphael M., Dias, Jorgivan M., Nielsen, Marina
Format: Article
Language:English
Subjects:
Condensates
Elementary particles
Exact sciences and technology
Exotic-charmonium states
Molecular structure
Non-perturbative methods
Nuclear physics
Physics
QCD sum rules
Quarks
Sum rules
The physics of elementary particles and fields
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Summary:Using the QCD sum rules we test if the new narrow structure, the X(4350) recently observed by the Belle Collaboration, can be described as a JPC=1−+ exotic Ds∗Ds0∗ molecular state. We consider the contributions of condensates up to dimension eight, we work at leading order in αs and we keep terms which are linear in the strange quark mass ms. The mass obtained for such state is mDs∗Ds0∗=(5.05±0.19) GeV. We also consider a molecular 1−+, D∗D0∗ current and we obtain mD∗D0∗=(4.92±0.08) GeV. We conclude that it is not possible to describe the X(4350) structure as a 1−+Ds∗Ds0∗ molecular state.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2010.05.024