Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules

Meng, L.; Wang, Bo; Wang, Guang-Juan; Zhu, Shi-Lin

doi:10.1016/j.physrep.2023.04.003

Cited by 73 publications

(15 citation statements)

References 1,090 publications

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“…( 17), and the precondition v e ≫ v i is imposed. Because the virtual state is dominantly generated from the D * K * interactions v e , and the D s π should play the same role as the J/ψπ for the Z c states (see the review [10]). The v i and v e are tuned to produce a virtual state pole that lies below the D * K * threshold about 0.1−13 MeV [corresponding to the upper and lower limits of T cs0 (2900) in Table IV] but with a small imaginary part 6 , i.e., E V = m V + iΓ V /2, with m V ∈ [2887.6, 2900.5] MeV and Γ V = 5 MeV.…”

Section: Systemsmentioning

confidence: 99%

“…These interpretations encompass hadronic molecules, compact multiquark states, and kinematic effects, etc. Among these, the hadronic molecular explanation takes precedence due to their commonly observed near-threshold features (e.g., see the reviews [2][3][4][5][6][7][8][9][10]).…”

Section: Introductionmentioning

confidence: 99%

“…The H denotes the superfield of the ( D, D * ) doublet, and its expression can be found, e.g., in Ref. [10,70]. The K * µ = (K * + , K * 0 ) T µ represents the isospin doublet of the K * meson.…”

Section: Introductionmentioning

confidence: 99%

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Prevalence of resistance mutations associated with integrase inhibitors in therapy-naive HIV-positive patients in Baoding, Hebei province, China

et al. 2022

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Antiretroviral therapy (ART) regimens containing integrase strand transfer inhibitors (INSTIs) are the recommended treatment for human immunodeficiency virus type 1 (HIV-1)-infected patients in the most recent guidelines in China. In this study, we investigated INSTI resistance mutations in newly diagnosed therapy-naive HIV-positive patients in Baoding City, Hebei Province (China) to provide guidance for implementing routine INSTI-associated HIV-1 genotypic resistance testing. Plasma samples were collected from HIV-1-infected patients without treatment at Baoding People’s Hospital from January 2020 to December 2021. The part of HIV-1 pol gene encoding integrase was amplified, sequenced, and analyzed for INSTI resistance. Clinical data including demographic data, CD4+ T cell counts, HIV-RNA loads, and resistance mutations were collected. Treatment-naïve HIV-1 patients (n = 131) were enrolled. We identified ten genotypes, and the predominant genotype was CRF01_AE in 67 patients (51.15%), CRF07_ BC in 39 patients (29.77%), subtype B in 11 patients (8.40%), and other subtypes (CRF68_01B, 3.82%; CRF55_01B, 1.53%, CRF80_0107, 1.53%; URFs 1.53%; and CRF103_01B, CRF59_01B, and CRF65_cpx, 1.4% each). Four major (E138A, R263k, G140S, and S147G) and three accessory (H51Y, Q146QL, and S153F) INSTI-resistance mutations were observed (genotype CRF01_AE, three patients; genotype B, one patient; and genotype CRF07_BC, one patient), resulting in different degrees of resistance to the following five INSTIs: raltegravir, elvitegravir, dolutegravir, bictegravir, and cabotegravir. The overall resistance rate was 3.82% (5/131). All INSTI-resistant strains were cross-resistant. The primary INSTI drug resistance rate among newly diagnosed HIV-infected patients in Baoding was low, but monitoring and research on HIV INSTI resistance should be strengthened in Baoding because INSTI-based regimen prescriptions are anticipated to increase in the near future.

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Section: Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prevalence of resistance mutations associated with integrase inhibitors in therapy-naive HIV-positive patients in Baoding, Hebei province, China

et al. 2022

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“…Recent developments on unconventional states, as well as experimental and theoretical studies, are presented in Refs. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], and references therein. It's important to note, however, that despite the numerous studies that have been conducted, the internal structure of these unconventional states is still incompletely understood.…”

Section: Motivationmentioning

confidence: 99%

Magnetic moments of the vector hidden-charm tetraquark states

Özdem

2022

Phys. Rev. D

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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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“…The spin-parity quantum numbers of the pentaquark state with hidden-charm states have been predicted by many theorists since their discovery in experiments. However, reliable information about their spin-parity has been unavailable until now [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. One of the remaining challenges to be solved is to understand the inner structure of the experimentally discovered pentaquark states with the hidden charm.…”

mentioning

confidence: 99%

Magnetic dipole moments of the hidden-charm pentaquark states: $$P_c(4440)$$, $$P_c(4457)$$ and $$P_{cs}(4459)$$

Özdem

2021

Eur. Phys. J. C

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In this work, we employ the light-cone QCD sum rule to calculate the magnetic dipole moments of the $$P_c(4440)$$ P c ( 4440 ) , $$P_c(4457)$$ P c ( 4457 ) and $$P_{cs}(4459)$$ P cs ( 4459 ) pentaquark states by considering them as the diquark–diquark–antiquark and molecular pictures with quantum numbers $$J^P = \frac{3}{2}^-$$ J P = 3 2 - , $$J^P = \frac{1}{2}^-$$ J P = 1 2 - and $$J^P = \frac{1}{2}^-$$ J P = 1 2 - , respectively. In the analyses, we use the diquark–diquark–antiquark and molecular form of interpolating currents, and photon distribution amplitudes to obtain the magnetic dipole moment of pentaquark states. Theoretical examinations on magnetic dipole moments of the hidden-charm pentaquark states, are essential as their results can help us better figure out their substructure and the dynamics of the QCD as the theory of the strong interaction. As a by product, we extract the electric quadrupole and magnetic octupole moments of the $$P_c(4440)$$ P c ( 4440 ) pentaquark. These values show a non-spherical charge distribution.

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Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules

Cited by 73 publications

References 1,090 publications

Prevalence of resistance mutations associated with integrase inhibitors in therapy-naive HIV-positive patients in Baoding, Hebei province, China

Prevalence of resistance mutations associated with integrase inhibitors in therapy-naive HIV-positive patients in Baoding, Hebei province, China

Magnetic moments of the vector hidden-charm tetraquark states

Magnetic dipole moments of the hidden-charm pentaquark states: $$P_c(4440)$$, $$P_c(4457)$$ and $$P_{cs}(4459)$$

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