Exploring the magnetic dipole moments of $$ {T}_{QQ\overline{q}\overline{s}} $$ and $$ {T}_{QQ\overline{s}\overline{s}} $$ states in the framework of QCD light-cone sum rules

Azizi, K.; Özdem, U.

doi:10.1007/jhep03(2023)166

“…Focusing on this state, in Ref. [93], J P = 1 + T Q Q q s and T Q Q s s states are studied as diquark-antidiquark tetraquarks and magnetic moments are calculated with using heavy axial vector diquark-light scalar antidiquark type current denoted as J 1 , heavy scalar diquark-light axial vector antidiquark type current denoted as J 2 , heavy tensor diquark-light axial vector antidiquark type current denoted as J 3 and heavy vector diquark-light pseudotensor antidiquark type current denoted as J 4 . According to their work, J 1 gives μ = (−0.46 ± 0.07)μ N , J 2 gives Our results are compatible with this work.…”

Section: Tetraquarks With Strangeness-one (S = −1)mentioning

confidence: 99%

Masses and magnetic moments of doubly heavy tetraquarks via diffusion Monte Carlo method

Mutuk

2024

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We present mass spectrum and magnetic moments of the $$\bar{n}\bar{n}QQ$$ n ¯ n ¯ Q Q states, where $$n=u,d,s$$ n = u , d , s and $$Q=c,b.$$ Q = c , b . We solve four-body Schrödinger 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 $$T_{cc}^+$$ T cc + state as $$M_{T_{cc}^+}=3892 ~\text {MeV}$$ M T cc + = 3892 MeV and $$\mu =0.28 \mu _N,$$ μ = 0.28 μ N , respectively. We also find the mass and magnetic moment of $$T_{bb}^-$$ T bb - as $$M_{T_{bb}^-}=10338 ~\text {MeV}$$ M T bb - = 10338 MeV and $$\mu =-0.32 \mu _N,$$ μ = - 0.32 μ N , respectively. We find some bound state candidates of doubly heavy tetraquark systems with $$I(J^P)=0(1)^+$$ I ( J P ) = 0 ( 1 ) + $$nn {\bar{b}} {\bar{b}},$$ n n b ¯ b ¯ , $$I(J^P)=0(0)^+$$ I ( J P ) = 0 ( 0 ) + $$nn {\bar{c}} {\bar{b}},$$ n n c ¯ b ¯ , $$I(J^P)=0(1)^+$$ I ( J P ) = 0 ( 1 ) + $$nn {\bar{c}} \bar{b},$$ n n c ¯ b ¯ , and $$I(J^P)=1/2(1)^+$$ I ( J P ) = 1 / 2 ( 1 ) + $$ns {\bar{b}} {\bar{b}}.$$ n s b ¯ b ¯ . We compare our results with other approaches in the literature.

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“…The use of LCSR to obtain electromagnetic properties for doubly-heavy baryons, tetraquarks and pentaquarks is illustrated in refs. [39][40][41][42][43][44][45][46][47].…”

Section: Motivationmentioning

confidence: 99%

“…In the language of magnetic moments, changing the basis of the hadron also changes its internal structure, potentially leading to significant changes in the results. Different interpolating currents have been utilized for tetra-and pentaquarks to extract their magnetic moment in [41,75,76]. The results showed that the magnetic moments varied significantly depending on the diquark structures employed.…”

Section: Jhep05(2024)301mentioning

confidence: 99%

Unveiling the underlying structure of axial-vector bottom-charm tetraquarks in the light of their magnetic moments

Özdem

2024

J. High Energ. Phys.

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The magnetic moment yields an excellent framework to explore the inner structure of particles determined by the quark-gluon dynamics of QCD, as it is the leading-order response of a bound system to a weak external magnetic field. Motivated by this, in this study, the magnetic moments of possible axial-vector $$ {T}_{bc\overline{u}\overline{u}} $$ T bc u ¯ u ¯ , $$ {T}_{bc\overline{d}\overline{d}} $$ T bc d ¯ d ¯ , and $$ {T}_{bc\overline{u}\overline{d}} $$ T bc u ¯ d ¯ tetraquarks are obtained with the help of light-cone QCD sum rules. For this purpose, we assume that these states are represented as a diquark-antidiquark picture with different structures and interpolating currents. The magnetic moment results derived using different diquark-antidiquark configurations differ substantially from each other. This can be translated into more than one tetraquark state with the same quantum number and quark content yet possessing different magnetic moments. From the numerical results obtained, we have concluded that the magnetic moments of the Tbc states can project their inner structure, which can be used for their quantum numbers and quark-gluon organization. The contribution of individual quarks to the magnetic moments is also analyzed for completeness. We hope that our predictions of the magnetic moments of the Tbc tetraquarks, together with the results of other theoretical investigations of the spectroscopic parameters and decay widths of these interesting tetraquarks, may be valuable in the search for these states in future experiments and in unraveling the internal structure of these tetraquarks.

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“…The use of LCSR to obtain electromagnetic properties for doubly-heavy hadrons is illustrated in Refs. [37][38][39][40][41][42][43][44][45].…”

Section: Motivationmentioning

confidence: 99%

“…In the language of magnetic moments, changing the basis of the hadron also changes its internal structure, potentially leading to significant changes in the results. Different interpolating currents have been utilized for tetraand pentaquarks to extract their magnetic moment in [39,58,59]. The results showed that the magnetic moments varied significantly depending on the diquark structures employed.…”

Section: Numerical Illustrationsmentioning

confidence: 99%

Magnetic moments of the vector hidden-charm tetraquark states

Özdem

¹

2022

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The magnetic moment yields an excellent framework to explore the inner structure of particles determined by the quark-gluon dynamics of QCD, as it is the leading-order response of a bound system to a weak external magnetic field. Motivated by this, in this study, the magnetic moments of possible axial-vector T bcūū , T bc d d, and T bcū d tetraquarks are obtained with the help of light-cone QCD sum rules. For this purpose, we assume that these states are represented as a diquark-antidiquark picture with different structures and interpolating currents. The magnetic moment results derived using different diquark-antidiquark configurations differ substantially from each other. This can be translated into more than one tetraquark state with the same quantum number and quark content yet possessing different magnetic moments. From the numerical results obtained, we have concluded that the magnetic moments of the T bc states can project their inner structure, which can be used for their quantum numbers and quark-gluon organization. The contribution of individual quarks to the magnetic moments is also analyzed for completeness. We hope that our predictions of the magnetic moments of the T bc tetraquarks, together with the results of other theoretical investigations of the spectroscopic parameters and decay widths of these interesting tetraquarks, may be valuable in the search for these states in future experiments and in unraveling the internal structure of these tetraquarks.

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Exploring the magnetic dipole moments of $$ {T}_{QQ\overline{q}\overline{s}} $$ and $$ {T}_{QQ\overline{s}\overline{s}} $$ states in the framework of QCD light-cone sum rules

Abstract: Motivated by the recent observation of the tetraquark $$ {T}_{cc}^{+} $$ T cc + , we investigate the magnetic dipole moments of the possible single and double strange partners, $$ {T}_{QQ\overline{q}\overline{s}} $$ T QQ q ¯ … Show more

Cited by 7 publications

References 81 publications

Masses and magnetic moments of doubly heavy tetraquarks via diffusion Monte Carlo method

Masses and magnetic moments of doubly heavy tetraquarks via diffusion Monte Carlo method

Unveiling the underlying structure of axial-vector bottom-charm tetraquarks in the light of their magnetic moments

Magnetic moments of the vector hidden-charm tetraquark states

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