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Masses and Magnetic Moments of Doubly Heavy Tetraquarks via Diffusion Monte Carlo Method

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arxiv 2312.13383 v2 pith:J7NIMQTR submitted 2023-12-20 hep-ph hep-ex

Halil Mutuk This is my paper · ORCID
classification hep-phhep-ex
keywords magneticfindmasscarlodiffusiondoublyheavymethod
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We present mass spectrum and magnetic moments of the $\bar{n}\bar{n}QQ$ states, where $n=u,d,s$ and $Q=c,b$. We solve four-body Schr\"odinger equation with a quark potential model by using diffusion Monte Carlo (DMC) method. The quark potential is based on the Coulomb, confinement and spin-spin interaction terms. We find mass and magnetic moment of the $T_{cc}^+$ state as $M_{T_{cc}^+}=3892 ~\text{MeV}$ and $\mu=0.28 \mu_N$, respectively. We also find the mass and magnetic moment of $T_{bb}^-$ as $M_{T_{bb}^-}=10338 ~\text{MeV}$ and $\mu=-0.32 \mu_N$, respectively. We find some bound state candidates of doubly heavy tetraquark systems with $I(J^P)=0(1)^+$ $nn \bar b \bar b$, $I(J^P)=0(0)^+$ $nn \bar c \bar b$, $I(J^P)=0(1)^+$ $nn \bar c \bar b$, and $I(J^P)=1/2(1)^+$ $ns \bar b \bar b$. We compare our results with other approaches in the literature.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Diffusion Monte Carlo calculation of compact $T_{cs0}$ and $T_{c\bar{s}0}$ tetraquarks

    hep-ph 2025-07 conditional novelty 6.0 of 10

    A constituent quark model with diffusion Monte Carlo identifies the LHCb Tcs0(2870) and Tcbar_s0(2900) as compact, excited flavor states with I=1, and predicts lower-mass ground flavor partners.

  2. $D \bar D_1(2420)$ and $D^* \bar D^*(2400)$ molecular states: Probing their electromagnetic fingerprints

    hep-ph 2025-04 conditional novelty 6.0 of 10

    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.

  3. Prediction of an $I(J^{P})=0(1^{-})$ $\bar{b}\bar{b}ud$ Tetraquark Resonance Close to the $B^\ast B^\ast$ Threshold Using Lattice QCD Potentials

    hep-lat 2024-12 conditional novelty 6.0 of 10

    A coupled-channel Born-Oppenheimer calculation with lattice QCD potentials predicts a broad \bar{b}\bar{b}ud tetraquark resonance about 4 MeV above the B*B* threshold, with mass 2m_B + 94 MeV and width 140 MeV.

  4. Exploring the spectroscopic features of double-strangeness tetraquark states

    hep-ph 2025-05 conditional novelty 5.0 of 10

    Model calculations suggest a bound double-strange tetraquark state with I(JP)=0(1+) at about 1310 MeV and a resonance near 1783 MeV.

  5. Investigating the underlying structure of vector hidden-charm tetraquark states via their electromagnetic characteristics

    hep-ph 2024-12 conditional novelty 5.0 of 10

    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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