Double charm states in QCD sum rules

In this note we revisit and improve the calculation of the Tcc mass using the double ratio of QCD sum rules (QCDSR), assuming that this state is described by a molecular current. In a previous work we used a tetraquark current. We conclude that with both currents we arrive at nearly the same results...

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Bibliographic Details
Published in:Journal of physics. Conference series 2012-01, Vol.348 (1), p.12008-5
Main Authors: Navarra, Fernando S, Nielsen, Marina
Format: Article
Language:English
Subjects:
Mathematical analysis
Physics
Quantum chromodynamics
Sum rules
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Summary:In this note we revisit and improve the calculation of the Tcc mass using the double ratio of QCD sum rules (QCDSR), assuming that this state is described by a molecular current. In a previous work we used a tetraquark current. We conclude that with both currents we arrive at nearly the same results for the Tcc mass, which turns out to be close to the mass of the X(3872).
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/348/1/012008