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Article
Physics, Nuclear
Feng Yang et al.
Summary: In this work, the radiative and strong decay of the S-wave K (K) over bar1 (1400) molecular state is studied using the effective Lagrangians approach. The relation between the K (K) over bar1 (1400) molecular state and the newly observed eta (1) (1855) state is found by comparing with the BESIII observation. The results predict a decay width of up to 195.06(-5.13)(+5.18)MeV and suggest that the dominant contribution in the decay is provided by the K (K) over bar1*pi three-body decay, rather than the eta eta' channel found in the experiment. Additionally, the partial width for eta (1) (1855) -> gamma phi can reach up to 17.67(-0.62)(+0.38)KeV. These results can be tested in future experiments to determine the nature of the eta (1) (1855).
Article
Physics, Nuclear
Lin Qiu et al.
Summary: The observation of the light hybrid candidate eta(1)(1855) by the BESIII Collaboration provides an important opportunity to advance our knowledge on exotic hadrons in terms of flavor sector. The study of its production and decay mechanisms can establish a crucial clue for the J(P(C)) = 1(-(+)) hybrid nonet.
Article
Physics, Multidisciplinary
Hua-Xing Chen et al.
Summary: In this study, we investigated the decay patterns of hybrid mesons with exotic quantum numbers. Our results showed that the decay width of certain channels is enhanced by the QCD axial anomaly, despite the small p-wave phase space. The results also supported the interpretation of a recently observed meson as a hybrid meson with certain quantum numbers.
CHINESE PHYSICS LETTERS
(2022)
Article
Physics, Multidisciplinary
Xiang-Kun Dong et al.
Summary: This study investigates an observed exotic state with J(PC) = 1(-+), denoted as eta(1)(1855), and explores whether it can be interpreted as a KK1(1400) + c.c. molecule. The one boson exchange model is used to show that KK1(1400) with J(PC) = 1(-+) can bind together and yield the same binding energy as the experimental value. The predicted branch ratio is consistent with experimental results, supporting the molecular explanation of eta(1)(1855).
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Astronomy & Astrophysics
Vanamali Shastry et al.
Summary: In this study, we investigate the decays of the JPC = 1-+ hybrid nonet using a Lagrangian that is invariant under flavor symmetry, parity reversal, and charge conjugation. By utilizing available experimental data, lattice predictions, and flavor constraints, we determine the coupling strengths between the pi 1(1600) and various two-body mesonic states. With the obtained coupling constants, we estimate the partial widths of the two-body decays of the hybrid pion, kaon, and isoscalars, finding that the hybrid kaon can be as broad as the pi 1(1600). Additionally, we discover that the light isoscalar must have a significantly narrow width, while the width of the heavy isoscalar can match the recently observed eta 1(1855).
Article
Astronomy & Astrophysics
Bing-Dong Wan et al.
Summary: This paper examines the structure of the hadronic state 171(1855) and decodes its inner structure through mass spectrum calculation and analysis of decay modes. It also evaluates the ssss molecular state with the same quantum number.
Article
Physics, Particles & Fields
Qi Wu et al.
Summary: In this study, we investigate the production of Z(cs)(+) in B+ and B-s(0) decays and evaluate the branching fractions using an effective Lagrangian approach. The estimated branching fractions of B-s(0) -> K- Z(cs)(+) and B+ -> phi Z(cs)(+) are of the order of 10(-4) and 10(-5), respectively. The ratio of these two branching fractions suggests that the B-s(0) -> K-+/- Z(cs)(-/+) -> K+ K- J/psi process may be a better way to search for Z(cs) and is accessible for further experimental measurements by the Belle II and LHCb Collaborations.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Physics, Particles & Fields
Yao Yu et al.
Summary: The study focused on different decay modes of D-s(+) and made predictions on specific rescattering phenomena, comparing the results with observational data. The calculations showed that some predicted decay modes agreed with the data, while others require further examination to understand discrepancy.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Yu-Kuo Hsiao et al.
Summary: In the B+ -> D(+)D(-)K(+) decay, LHCb has reported the observation of open-charm exotic states with four different quark flavors, proposing a process to confirm this discovery. The estimates suggest that these states are accessible to the LHCb experiment, paving the way for further research in b-baryon decays.
Article
Physics, Particles & Fields
Yu-Kuo Hsiao et al.
EUROPEAN PHYSICAL JOURNAL C
(2020)
Article
Physics, Particles & Fields
J. Schneitzer et al.
Article
Physics, Nuclear
Florian Divotgey et al.
EUROPEAN PHYSICAL JOURNAL A
(2013)
Article
Astronomy & Astrophysics
Francesco Giacosa et al.
MODERN PHYSICS LETTERS A
(2012)
Article
Physics, Nuclear
T. Branz et al.
EUROPEAN PHYSICAL JOURNAL A
(2008)
Article
Physics, Nuclear
Francesco Giacosa et al.
Article
Physics, Particles & Fields
A Denner et al.
