Article
Physics, Particles & Fields
Bhoomika Pandya, Manan Shah, P. C. Vinodkumar
Summary: The study computed the mass spectra of bottomonium states using the Instanton Induced potential and a stronger confinement term, showing good agreement with values reported by PDG (2020). Mixing of two nearby states was observed, indicating the importance of confinement in determining the mass spectroscopy of heavy hadrons.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Multidisciplinary
Virendrasinh Kher, Raghav Chaturvedi, Nayneshkumar Devlani, A. K. Rai
Summary: The study investigates the mass spectrum of bottomonium using the Coulomb plus linear (Cornell) potential. Gaussian wave function is employed in position and momentum space to estimate potential and kinetic energies. Based on calculations, the study identifies Upsilon(10860) as an admixture of 4(3)S(1) with 4(3)D(1), Upsilon(10753) as an admixture of 6(3)S(1) with 4(3)D(1), and suggests Upsilon(11020) as a pure 4(3)D(1) bottomonium state. Regge trajectories in the (J, M-2) and (n(r), M-2) planes are examined to support the findings. Additionally, estimates are made for the decay constants, transition rates, and annihilation decay width for bottomonium states.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Physics, Multidisciplinary
Vikas Patel, Raghav Chaturvedi, A. K. Rai
Summary: This article presents a detailed study of ground, orbitally, and radially excited states of D-meson Qq (Q=c, q=u/d) using the screened potential model and Gaussian wave-function. Various interactions are incorporated to calculate meson masses and properties, with Regge trajectories constructed to associate observed excited states with the D-meson family.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Physics, Multidisciplinary
E. E. Ibekwe, U. S. Okorie, J. B. Emah, E. P. Inyang, S. A. Ekong
Summary: The radial Schrodinger equation with the screened Kratzer potential was solved using the series expansion method in this study, obtaining bound state energy spectra. Adjustments to the potential parameters were made to deduce potential models like Kratzer and Coulomb potentials. Numerical computations were done for hydrogen chloride and lithium hydride diatomic molecules with results matching theoretical works, and applied to heavy quarkonium systems with agreement to experimental values and previous theoretical studies. This research has potential applications in high energy physics and molecular physics.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Astronomy & Astrophysics
Liuyuan Wen, Baoyi Chen
Summary: In this study, the time-dependent Schrodinger equation with different complex potentials is used to investigate the bottomonium sequential suppression in Pb-Pb and Au-Au collisions. The color screening effect and random scatterings with thermal partons are considered in the heavy-quark potentials. It is found that the pattern of bottomonium sequential suppression can be well explained when the real part of the potential is close to the internal energy of heavy quarkonium, indicating that it can serve as a probe of strong heavy-quark potential in the medium.
Article
Astronomy & Astrophysics
Jaume Tarrus Castella, Emilie Passemar
Summary: The study analyzes the transition widths of Upsilon(10753) and Upsilon(11020) into standard bottomonium states, suggesting that Upsilon(11020) may be a hybrid bottomonium state. The research employs NRQCD effective field theory and compares the results with experimental values and semi-inclusive widths.
Article
Biochemistry & Molecular Biology
Xiaoyin Zhang, Yue He, Zhanbo Xiong, Min Li, Ming Li, Nan Zheng, Shengguo Zhao, Jiaqi Wang
Summary: This study screened natural compounds as potential urease inhibitors by targeting UreG in ruminal microbial urease using molecular docking and GTPase activity test. Chelerythrine chloride was identified as a potential urease inhibitor, showing mixed inhibition and affecting the secondary structure of UreG which resulted in inhibition of nickel binding and induced conformational changes in UreG. This provides new evidence for developing novel urease inhibitors targeting UreG to reduce nitrogen excretion from ruminants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Physics, Fluids & Plasmas
Zhan-Bin Chen
Summary: This paper presents a new distorted wave approach based on the relativistic configuration interaction theory for calculating atomic structures, radiative properties, and collision dynamics of atoms or ions in external confinement. The Hulthen potential is used to include the effect of plasma background, making it applicable to various areas in physics and chemistry. The approach includes perturbative effects of the Breit interaction and quantum electromagnetic dynamics in the multi-electron Hamiltonian. The results of applying this approach to an exemplary He-like S14+ ion embedded in a plasma show good agreement with reference values, demonstrating its effectiveness.
PHYSICS OF PLASMAS
(2023)
Article
Mathematics, Applied
D. I. Borisov, A. L. Piatnitski, E. A. Zhizhina
Summary: This paper focuses on the spectral properties of a bounded self-adjoint operator in L-2(R-d) that is the sum of a convolution operator with an integrable convolution kernel and an operator of multiplication by a continuous potential converging to zero at infinity. The essential and discrete spectra of this operator are studied. The essential spectrum of the sum is shown to be the union of the essential spectrum of the convolution operator and the image of the potential. Sufficient conditions for the existence of discrete spectrum are provided, and lower and upper bounds for the number of discrete eigenvalues are obtained. The spectral properties of the operators considered in this work are compared with those of classical Schrodinger operators.
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
(2023)
Article
Chemistry, Physical
J. Arjan Berger, Pierre-Francois Loos, Pina Romaniello
Summary: This study demonstrates the advantages of using the COHSEX approach in calculating potential energy surfaces, showing smoother results compared to other methods. The use of self-consistent COHSEX QP energies and orbitals can lead to results independent of the starting point and improved equilibrium distances. The total energies may worsen with self-consistency, but the equilibrium distances are improved due to changes in screening within the Bethe-Salpeter equation.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2021)
Article
Astronomy & Astrophysics
Peter Petreczky, Sayantan Sharma, Johannes Heinrich Weber
Summary: This study focuses on the screening masses of bottomonium in a 2 + 1 flavor QCD, with calculations performed at various temperatures to determine the melting points of different states. The results reveal that eta(b)(1S) and Upsilon(1S) states melt at temperatures above 500 MeV, while chi(b0)(1P) and h(b)(1P) states melt at temperatures above 350 MeV.
Article
Astronomy & Astrophysics
Zhen-Ming Xu
Summary: In this study, the thermodynamic properties of black holes in a thermal potential were investigated, revealing the energy spectra of Schwarzschild and BTZ black holes which are respectively related to external and intrinsic parameters. The results also demonstrate the difference between three-dimensional and four-dimensional gravity.
Article
Astronomy & Astrophysics
Jacob Boyd, Michael Strickland, Sabin Thapa
Summary: In this study, transverse-momentum-dependent feed-down fractions for bottomonium production were extracted using a data-driven approach. The results showed a strong dependence of the feed-down fractions on transverse momentum, with approximately 75% of T(1S) and T(2S) states being directly produced.
Article
Astronomy & Astrophysics
Davide Marietti, Alessandro Pilloni, Umberto Tamponi
Summary: In this study, we investigate the production of loosely bound molecules in bottomonium annihilations and e+e- collisions. We test several models for deuteron production and predict the deuteron spectrum and production rate at different energy regions. The results show differences between the models but are consistent with the existing data.
Article
Physics, Multidisciplinary
Sujay Kr Nayek
Summary: In this study, the bound state energies and wave functions of various diatomic molecules such as H-2, HCl, N-2, CO, NO, ScH, and LiH were calculated using the screened Modified Kratzer potential with different vibrational quantum numbers n and angular momentum quantum numbers l. The asymptotic iteration method was employed for estimation. Additionally, the effects of Modified Kratzer potential and inversely quadratic Yukawa potential on the energy levels of the selected diatomic molecules were also investigated.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)