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Exploring the magnetic dipole moments of $T_{QQ \bar q \bar s}$ and $T_{QQ \bar s \bar s}$ states in the framework of QCD light-cone sum rules
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abstract
Motivated by the recent observation of the tetraquark $ T_{cc}^{+}$, we investigate the magnetic dipole moments of the possible single and double strange partners, $T_{QQ \bar q \bar s}$ and $T_{QQ \bar s \bar s}$, with the spin-parity $ J^{P} = 1^{+}$ by means of the QCD light-cone sum rules. To this end, we model these states as diquark-antidiquark states with different organizations and interpolating currents. The results of magnetic dipole moments obtained using different diquark-antidiquark structures differ from each other, considerably. The magnetic dipole moment is the leading-order response of a bound system to a soft external magnetic field. Therefore, it provides an excellent platform for investigation of the inner structures of hadrons governed by the quark-gluon dynamics of QCD.
Forward citations
Cited by 5 Pith papers
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Charting doubly strange hidden-charm pentaquarks: An electromagnetic mapping of spin-$\frac{1}{2}$ and $\frac{3}{2}$ states
LCSR calculations of magnetic, quadrupole and octupole moments for S=-2 hidden-charm pentaquarks yield large current-dependent ranges (-4.25 to 5.74 μ_N) dominated by the charm quark in most diquark configurations.
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$D \bar D_1(2420)$ and $D^* \bar D^*(2400)$ molecular states: Probing their electromagnetic fingerprints
For the D \bar D_1 and D* \bar D* molecular states, the computed magnetic moments are -1.41 and 3.85 nuclear magnetons, with negative quadrupole moments, both dominated by light-quark contributions.
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Investigating the underlying structure of vector hidden-charm tetraquark states via their electromagnetic characteristics
QCD light-cone sum rules give magnetic moments for vector hidden-charm tetraquarks that depend strongly on the chosen diquark-antidiquark current.
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Shedding light on the nature of the $P_{cs}(4459)$ pentaquark state
QCD light-cone sum rules with three diquark-diquark-antiquark currents predict Pcs(4459) magnetic dipole moments of -0.60, 1.60, and 0.99 nuclear magnetons.
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Unveiling the electromagnetic structure and intrinsic dynamics of spin-$\frac{3}{2}$ hidden-charm pentaquarks: A comprehensive QCD analysis
QCD sum rules predict distinct magnetic dipole moments for six JP=3/2- hidden-charm pentaquarks depending on their diquark-diquark-antiquark internal structure, with the charm quark dominating the magnetic response.
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