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Heavy flavor dibaryons

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arxiv 1507.08278 v1 pith:DW4LNRTH submitted 2015-07-29 hep-ph nucl-th

T.F. Carames , A. Valcarce This is my paper · ORCID
classification hep-phnucl-th
keywords baryondibaryonheavyinteractionlambdapossibleabovealthough
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study the two-baryon system with two units of charm looking for the possible existence of a loosely bound state resembling the $H$ dibaryon. We make use of a chiral constituent quark model tuned in the description of the baryon and meson spectra as well as the $NN$ interaction. The presence of the heavy quarks makes the interaction simpler than in light baryon systems. We analyze possible quark-Pauli effects that would be present in spin-isospin saturated channels. Our results point to the non-existence of a charmed $H$-like dibaryon, although it may appear as a resonance above the $\Lambda_c\Lambda_c$ threshold.

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  1. Lattice QCD study of $\Lambda_c \Lambda_c$ scattering

    hep-lat 2025-02 conditional novelty 7.0 of 10

    The first lattice QCD study of Lambda_c Lambda_c scattering finds a repulsive interaction with scattering length a0 = -0.21(4)(8) fm.

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