Article
Physics, Particles & Fields
Walaa I. Eshraim
Summary: We investigate the ground-state pseudoscalar glueball J(PC) = 0(-+) by calculating its two and three-body decays involving scalar, pseudoscalar, vector, and axial-vector quark-antiquark meson fields. We compute the branching ratios using a parameter-free calculation and assume a mass of 2.6 GeV for the pseudoscalar glueball based on lattice QCD simulations. We also calculate the branching ratios for a pseudoscalar glueball mass of 2.37 GeV, which matches the measured mass of the resonance X(2370) in the BESIII experiment. The results are important for ongoing and planned experiments such as BESIII, Belle-II, and PANDA.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Xi-Zhe Ling, Jun-Xu Lu, Ming-Zhu Liu, Li-Sheng Geng
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
Chang-Yong Liu
Summary: In this study, the masses of pseudoscalar mesons were investigated using a non-perturbative mass formula. The mass of pseudoscalar meson (c (c) over bar) was found to be 7.6 GeV, which solves the problem of double cc production in e(+)e(-) annihilation at an energy of approximately 10.6 GeV. The mass of pseudoscalar meson (b (b) over bar) was also determined to be 28.4 GeV, which is consistent with the invariant mass of mu(+)mu(-) pairs produced in association with b jet at the LHC. Additionally, the formula was generalized to three flavors pseudoscalar mesons, and the mass of eta' meson was obtained, which is close to the experimental value.
MODERN PHYSICS LETTERS A
(2022)
Article
Astronomy & Astrophysics
Zhao-Qian Yao, Daniele Binosi, Zhu-Fang Cui, Craig D. Roberts
Summary: Continuum Schwinger function methods are used to predict transition form factors and branching fractions in the strong-interaction bound-state problem. The results agree with available data and provide benchmarks for unmeasured form factors. The study also predicts values for V-cs vertical bar and branching fraction ratios, which can be used to test lepton flavour universality. Quantitative comparisons are made with recent experimental measurements, emphasizing the importance of further refinements.
Article
Astronomy & Astrophysics
Jung-Min Suh, Hyun-Chul Kim
Summary: In this study, the axial-vector transition form factors of the lowest-lying singly heavy baryons are investigated using the chiral quark-soliton model. Numerical results are presented and compared with experimental data.
Article
Physics, Multidisciplinary
Hua-Xing Chen, Niu Su, Shi-Lin Zhu
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, Nuclear
Miklos Zetenyi, Deniz Nitt, Michael Buballa, Tetyana Galatyuk
Summary: This study investigates the reaction pi(-)p -> ne(+)e(-) using an effective Lagrangian model, predicting the differential cross section and spin density matrix elements at different masses. The cross section in the studied energy range is mainly influenced by the Born and N(1520) contributions.
Article
Astronomy & Astrophysics
Hui-Min Yang, Hua-Xing Chen, Er-Liang Cui, Qiang Mao
Summary: In this study, we investigate the properties and masses of Xi(b)(6100) and its partner states using the methods of QCD sum rules and light-cone sum rules within the framework of heavy quark effective theory. Our results suggest that Xi(b)(6100) can be interpreted as a P-wave bottom baryon and has a partner state labeled as Xi(b)(1/2(-)). Additionally, lambda(b)(5912) and lambda(b)(5920) are identified as partner states of Xi(b)(6100) with J(P) = 1/2(-) and 3/2(-), respectively, and other charmed partner states are also discussed.
Article
Physics, Nuclear
Manas K. Mohapatra
Summary: We investigate exclusive hadronic decay modes of Bd particles induced by quark-level transitions in the vector-like down quark model. The observed high levels of suppression and predicted branching fraction exceeding O(10^-9) lead us to explore physics beyond the standard model. Analysis of experimental limits on various decay modes also reveals significant impacts of new physics contributions on the observed branching ratio of the Bd decay processes.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Francesco Giovanni Celiberto, Michael Fucilla, Dmitry Yu. Ivanov, Mohammed M. A. Mohammed, Alessandro Papa
Summary: This study proposes novel channels for the manifestation of stabilization effects of high-energy resummation under next-to-leading-order corrections in proton-proton collisions, focusing on the inclusive semihard production of two bottom-flavored hadrons and a single bottom-flavored hadron accompanied by a light jet. The formalism relies on hybrid high-energy and collinear factorization, combining BFKL resummation with collinear factorization, to investigate distinctive signals of the BFKL dynamics through cross sections and azimuthal correlations. The study suggests investigating the interplay of different types of resummation mechanisms through double differential distributions in the transverse momenta of final-state particles.