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Article
Physics, Nuclear
Pengfei Yang et al.
Summary: This article studies the masses of hidden-strange analog P-s states in different configurations and calculates them based on the current experimental knowledge. The results show that all the structures have masses higher than their respective thresholds, indicating the absence of bound states.
Article
Physics, Nuclear
Wiriya Ruangyoo et al.
Summary: In this study, P-c resonances were investigated using the quark model and group theory. It was found that there are 17 possible pentaquark states, with dominant decay modes occurring through open charm channels for most hidden charm pentaquark states, but with four pentaquark states decaying through the pJ/psi channel with significant partial decay widths.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2022)
Review
Physics, Multidisciplinary
R. L. Workman et al.
Summary: The Review provides a comprehensive summary of particle physics and cosmology, including measurements, searches for hypothetical particles, and summaries of properties and search limits. It consists of two volumes, with Summary Tables, review articles, and Particle Listings.
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Gang Yang et al.
Summary: In this study, the properties and structures of fully charm and bottom pentaquarks were investigated within a lattice-QCD inspired quark model. A powerful computational technique was employed to predict and distinguish the different states of these quark systems, revealing that most of them have compact multiquark structures.
Article
Astronomy & Astrophysics
In Woo Park et al.
Summary: This study investigates the cross sections for the electroproduction of the P-c(4312) particle in electron-proton collisions, considering possible quantum numbers. The spin of P-c(4312) can be distinguished by comparing the pseudorapidity distribution in different polarization configurations for proton and electron beams. The parity of P-c(4312) can be discerned by analyzing the decay angle in the P-c -> p + J/psi channel. The Electron Ion Collider, with its capability to simultaneously polarize proton and electron beams, can be considered as a future facility for precision measurements of heavy pentaquarks.
Article
Physics, Particles & Fields
Mao-Jun Yan et al.
Summary: Recently, the LHCb Collaboration observed a new pentaquark state, the P-c(4337)(+), which may be a meson-baryon bound state. However, its spin and parity have not been determined yet. In this manuscript, we explore several possibilities and propose the existence of a series of anticharmed meson - antitriplet charmed baryon bound states.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Hong-Tao An et al.
Summary: This study systematically investigates various configurations of the fully heavy pentaquark system using the variational method, and concludes that no stable states exist in this system.
Article
Physics, Nuclear
T. J. Burns et al.
Summary: Based on new experimental data, constraints on the properties of the LHCb P-c states have been derived, and it is found that P-c(4312), P-c(4380), and P-c(4440) can be described as molecular states, but P-c(4457) does not fit into this picture. It is concluded that P-c(4440) has quantum numbers of 3/2(-). Predictions are made for large experimental signals of P-c states in certain decay channels.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Astronomy & Astrophysics
Ye Yan et al.
Summary: The fully heavy pentaquarks cccc (c) over bar and bbbb (b) over bar are investigated in a systematic manner using the chiral quark model and quark delocalization color screening model. The results from both models are consistent, and the effect of channel coupling is crucial for the formation of a bound state in the fully heavy pentaquark system. Three possible fully heavy pentaquarks are obtained with their respective J(P) and mass ranges, which should be searched for in future experiments.
Article
Astronomy & Astrophysics
Rui Chen et al.
Summary: In this study, we systematically analyze the interactions between an S-wave charm-strange baryon and an anticharmed meson. By utilizing the SU(3) flavor symmetry and heavy quark symmetry, we predict several promising hidden-charm molecular pentaquarks with strangeness |S| = 1.
Article
Physics, Particles & Fields
Rui Chen
Summary: The study further examines the two-body strong decay behavior of P-cs(4459) in the meson-baryon molecular scenario and supports its identity as a strange hidden-charm Xi D-c* molecule. The relative decay ratio between Λ D-c(s)* and J/psi Λ is around 10, with a partial decay width for the Λ D-c(s)* channel ranging from 0.6 to 2.0 MeV.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
Zhi-Gang Wang
Summary: In this article, we investigate the fully-heavy pentaquark states using QCD sum rules for the first time, and obtained their masses. We suggest searching for these states in the J/psi Omega(ccc) and Omega(bbb) invariant mass spectrum in the future.
Article
Physics, Multidisciplinary
Feng Yang et al.
Summary: This work studies the strong decay process of the newly observed P-cs(4459), suggesting it as a pure Xi(c)(D) over bar* molecular state. By evaluating partial decay widths, it supports the S-wave (D) over bar*Xi(c) molecular state for P-cs(4459, with a J(P) = 1/2(-) assignment, and suggests that the P-cs(4459) in the J(P) = 3/2(-) case might be explained as a coupled bound state with a larger Xi(c)(D) over bar* component. The experimental measurements of this strong decay could be essential for verifying the molecule interpretation of P-cs(4459).
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2021)
Article
Multidisciplinary Sciences
R. Aaij et al.
Summary: The first evidence of a structure in the J/psi Lambda invariant mass distribution is obtained from an amplitude analysis of Xi(-)(b) -> J/psi Lambda K- decays. The observed structure is consistent with being due to a charmonium pentaquark with strangeness. Additionally, narrow excited Xi(-) states have been seen for the first time in a Xi(-)(b) decay.
Article
Physics, Multidisciplinary
Qi Wu et al.
Summary: Inspired by the recent work on P-cs (4459) by the LHCb collaboration, this study investigates the production of P-cs (4459) from Xi(b) decay using an effective Lagrangian approach. The estimated branching fractions for Xi(b) -> P-cs (4459) K are of the order of 10(-4) for different J(P) assignments to P-cs (4459). These estimations, combined with the decay properties of P-cs (4459), could be further confirmed through precise measurements, contributing to a better understanding of molecular interpretations and exploration of the J(P) quantum numbers of P-cs (4459).
CHINESE PHYSICS LETTERS
(2021)
Article
Physics, Nuclear
Pan-Pan Shi et al.
Summary: The mass spectrum of hidden charm pentaquark states is calculated using an effective Hamiltonian with interactions dependent on spin, color, and flavor. The results explain certain states and predict the masses of others, while also discussing potential decay channels.
EUROPEAN PHYSICAL JOURNAL A
(2021)
Article
Physics, Particles & Fields
Pan Ling et al.
Summary: The study estimated the cross sections of hidden charm pentaquarks and pointed out the differences between the two isospin components, as well as analyzed the variation of cross sections at different momenta.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Review
Physics, Multidisciplinary
Eite Tiesinga et al.
Summary: The self-consistent values of physics and chemistry constants recommended by CODATA for 2018 are reported, with discussions on major improvements and inconsistencies. Many constants have reduced uncertainties or exact values due to the transition to the revised SI. However, inconsistencies remain for the gravitational constant and the muon magnetic-moment anomaly.
REVIEWS OF MODERN PHYSICS
(2021)
Article
Physics, Particles & Fields
Meng-Lin Du et al.
Summary: This study investigates the nature of three narrow hidden-charm pentaquark states, suggesting P-c(4312) as a Sigma(c)D hadronic molecule, P-c(4440) and P-c(4457) as a Sigma(c)D and Sigma(c)D* hadronic molecules respectively, and identifies a new narrow state P-c(4380). The analysis reveals that the data is consistent with the proposed interpretations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Xi-Zhe Ling et al.
Summary: The study investigated the multiplet of three pentaquark states discovered in 2019 by the LHCb Collaboration, and analyzed the decay modes of P-c(4457) using effective Lagrangian approach and triangle mechanism to explore its spin. The results showed that the spin of P-c(4457) cannot be discriminated through the two decay modes.
Article
Astronomy & Astrophysics
Tian-Wei Wu et al.
Summary: This study investigates the existence of a three-body Sigma(c) DK bound state, similar to the first hidden charm pentaquark state discovered by the LHCb Collaboration. By solving the Schrodinger equation, the researchers found an excited hidden charm exotic state with strangeness, P-cs(*)(4739), and analyzed its strong decays, primarily into D Xi(')(c) and D-s(*)Sigma(c) with decay widths in the tens of MeV range.
Article
Astronomy & Astrophysics
Wen-Xuan Zhang et al.
Summary: In this paper, masses and magnetic moments of heavy baryons and tetraquarks with one and two open heavy flavors are computed using the MIT bag model. The results confirm the necessity of extra binding energy between heavy quarks and between heavy and strange quarks. Numerical calculations predict the masses of doubly charmed baryons and a strange isosinglet tetraquark, and show significant state mixing due to chromomagnetic interaction.
Article
Astronomy & Astrophysics
Yin Huang et al.
Summary: In this work, a theoretical study is conducted on the possible pentaquark states Lambda(0)(b)(5912) and Lambda(0)(b)(5920) in the gamma p -> Lambda(0()(b)*()) B+ reactions using an effective Lagrangian approach. The calculated total cross sections for gamma p ->Lambda(0)(b)(5912)B+ and gamma p -> Lambda(0)(b)(5920)B+ reactions are approximately 0.0164 and 0.00527 nb, respectively. Future experiments, such as the Electron-Ion Collider in China or the United States, may provide opportunities to test the nature of these pentaquark states.
Article
Astronomy & Astrophysics
Ming-Wei Li et al.
Summary: The study examines the magnetic moments and transition magnetic moments of P-c and P-cs states in the molecular picture, investigating the effects of coupled channel and D-wave contributions. The research reveals that coupled channel effects have a significant impact on most cases, while the D-wave contributions induce less variation. Additionally, the study shows a significant difference in the magnetic moments of P-cs (4459) under the assumption of spin being 1/2 or 3/2, and emphasizes the importance of studying electromagnetic properties to further understand the structure of these unconventional states.
Article
Astronomy & Astrophysics
Jun-Xu Lu et al.
Summary: The research investigates a hidden charm pentaquark state P(cs) (4459) recently reported by the LHCb Collaboration, which is assumed to be related to a (D) over bar*Xi(c) molecular state. By studying the Xi(-)(b) -> J/psi Lambda K- decay through triangle diagrams, the study obtains a model independent constraint on the product of couplings and predicts the branching ratio for future experimental studies.
Article
Astronomy & Astrophysics
Hong-Tao An et al.
Summary: This work examines heavy flavor pentaquarks with four heavy quarks, providing the mass spectrum and analyzing their strong decay behavior. The study suggests that future experiments should focus on this type of pentaquark.
Article
Astronomy & Astrophysics
Jian-Rong Zhang
Summary: This study utilizes the QCD sum rule approach to numerically calculate the masses of novel fully heavy QQQQ (Q) over bar pentaquark states, resulting in values of 7.41(-0.3)(1)(+0.27) GeV for cccc (c) over bar and 21.6012 GeV for bbbb (b) over bar. These predicted all-heavy pentaquark states can be searched for in the Omega(QQQ eta Q) invariant mass spectrum in experiments.
Article
Astronomy & Astrophysics
Jun-Tao Zhu et al.
Summary: The study reports a new molecular state P-cs(4459) and its possible properties, while predicting the existence and characteristics of other strange pentaquark states, providing insights into the origin and internal structure of these exotic heavy flavor states.
Article
Astronomy & Astrophysics
Hong-Tao An et al.
Summary: The study presents a systematic investigation on the mass spectra of fully heavy pentaquark states and their decay behaviors in the framework of the chromomagnetic interaction model, aiming to assist in the search for exotic pentaquark states in future experiments.
Article
Astronomy & Astrophysics
C. W. Xiao et al.
Summary: The study reexamines the characteristics of the P-cs(4459) state using a coupled channel unitary approach, finding it to possibly be a (D) over bar*Xi(c) bound state with a two-pole structure. Additionally, a deep bound state is identified at (4310.53 + i8.23) MeV, along with the potential existence of other bound states or unbound virtual states as previously predicted.
Article
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Gang Yang et al.
Review
Physics, Multidisciplinary
Nora Brambilla et al.
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R. Ghosh et al.
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Gang Yang et al.
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Zhi-Gang Wang
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