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arXiv · 1508.00343

Exploring possibly existing $q q \bar b \bar b$ tetraquark states with $q q = ud, ss, cc$

Antje Peters·Pedro Bicudo·Krzysztof Cichy·Björn Wagenbach·Marc Wagner
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Abstract

We compute potentials of two static antiquarks in the presence of two quarks $qq$ of finite mass using lattice QCD. In a second step we solve the Schrödinger equation, to determine, whether the resulting potentials are sufficiently attractive to host a bound state, which would indicate the existence of a stable $q q \bar b \bar b$ tetraquark. We find a bound state for $qq=(ud-du)/\sqrt{2}$ with corresponding quantum numbers $I(J^ P)=0(1^+)$ and evidence against the existence of bound states with isospin $I=1$ or $qq \in \{cc,ss \}$

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Antje Peters, Pedro Bicudo, Krzysztof Cichy, Björn Wagenbach, Marc Wagner. 2015-08-03. Exploring possibly existing $q q \bar b \bar b$ tetraquark states with $q q = ud, ss, cc$. https://arxiv.org/abs/1508.00343

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