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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Published in:Journal of physics. Conference series 2012-01, Vol.348 (1), p.12008-5
Main Authors: Navarra, Fernando S, Nielsen, Marina
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Language:English
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Mathematical analysis
Physics
Quantum chromodynamics
Sum rules
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description 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).
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subjects Mathematical analysis
Physics
Quantum chromodynamics
Sum rules
title Double charm states in QCD sum rules
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