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Shell-model study of logft values for 139,140,141Ba → 139,140,141La transitions Nucl. Phys. A (IF 1.4) Pub Date : 2024-02-29 Shweta Sharma, Praveen C. Srivastava
In the present work, beta-decay properties such as values and half-lives have been systematically studied corresponding to Ba isotopes using large-scale shell-model calculations. An extensive comparison of beta decay results corresponding to Ba → La using shell-model calculations is made with the recently available experimental data. In addition, we have also calculated the nuclear and beta decay properties
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Evaluation of 180mTa formation cross-sections in photoneutron reactions Nucl. Phys. A (IF 1.4) Pub Date : 2024-02-28 R.V. Avetisyan, A.G. Barseghyan, Yu.A. Gharibyan, A.V. Gyurjinyan, I.A. Kerobyan, H.A. Mkrtchyan, A.Yu. Petrosyan
Determining the relative production cross-sections of the short-lived (ground) and long- lived (metastable) states of Ta is integral in nuclear physics research. However, direct measurement of these cross-sections is challenging. In this study, we proposed a method for estimating the total flux-weighted average formation cross-section of Ta based on GEANT4 modeling to evaluate the short-lived (ground)
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Correlation between the shape coexistence and stability in Mo and Ru isotopes Nucl. Phys. A (IF 1.4) Pub Date : 2024-02-21 Mamta Aggarwal, G. Saxena, Pranali Parab
In a rapidly changing shape phase region, the presence of shape coexistence and its possible impact on the decay modes and half-lives, has been explored in astrophysically interesting Mo and Ru isotopes, in an extensive study within the microscopic theoretical framework using Nilsson Strutinsky Method and Relativistic Mean Field Model. The isotopic chains of Mo and Ru exhibit rapid shape phase transitions
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Heavy hadron production through pair annihilation in the ordinary and noncommutative SM Nucl. Phys. A (IF 1.4) Pub Date : 2024-02-19 S. Mohammad Moosavi Nejad, Vahid Ekraminasab
Different processes have been yet studied in the noncommutative standard model (NCSM) and various limits on the scale of noncommutative parameter have been determined. In the present work we, for the first time, investigate the production process of heavy hadrons through pair annihilation in the NCSM using Seiberg-Witten maps to the second-order of noncommutative parameter . Having experimental data
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Systematic shell-model study for structure and isomeric states in 200−210Po isotopes Nucl. Phys. A (IF 1.4) Pub Date : 2024-02-08 Sakshi Shukla, Praveen C. Srivastava, Kosuke Nomura, Larry Zamick
We report systematic large-scale shell-model calculation for Po isotopes with = 200 to 210. We have performed calculations using KHH7B interaction in the model space = 58-114 and = 100-164 around doubly-magic Pb. We allow valence neutrons to occupy in the , , , and orbitals, while two valence protons beyond are occupied in , and orbitals. The calculated energies and electromagnetic properties are compared
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Microscopic study of ground–state binding energies in Z = 52 − 70 neutron–rich nuclei Nucl. Phys. A (IF 1.4) Pub Date : 2024-02-06 Mojgan Abolghasem, Petr Alexa
We investigate 15 different Skyrme-interaction parametrizations and apply them to the chains of Te, Xe, Ba, Ce, Nd, Sm, Gd, Dy, Er, and Yb isotopes beyond = 78 to calculate theoretical binding energies within the mean-field approach based on density functional theory. Results of calculations are compared with available experimental data on binding energies and quadrupole deformation with the aim to
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Cross section measurements of 27Al(γ, x)24Na reactions as monitors for laser-driven bremsstrahlung γ-ray Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-26 M.Z. Wang, D. Wu, H.Y. Lan, J.Y. Zhang, J.X. Liu, H.G. Lu, J.F. Lv, X.Z. Wu, H. Zhang, J. Cai, Q.Y. Ma, Y.H. Xia, Z.N. Wang, Z.Y. Yang, X.L. Xu, Y.X. Geng, Y.Y. Zhao, H.R. Wang, F.L. Liu, J.Q. Yu, X.Q. Yan
The accurate monitors of the electron beams and γ-ray fluxes are very important for laser-driven photonuclear studies. The flux-weighted average cross sections and average cross sections per equivalent quantum of 27Al(γ,x;x=2pn,pd,H3e)24Na reactions were measured above the giant dipole resonance region through activation methods. Laser-driven ultra-intense bremsstrahlung γ-rays, generated by laser
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Activation cross sections of proton induced nuclear reactions on tungsten: Special regard to the formation of 186Re Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-26 B.M. Ali, Gehan Y. Mohamed, M. Al-Abyad
Cross-sections for the production of 181,182m,g,183,184g,186gRe radioisotopes from proton bombardment of natural tungsten have been measured using the stacked foil activation technique for proton energies up to 14.7 MeV. The results were analyzed and compared with the reported experimental data, and the theoretical excitation functions as calculated by the EMPIRE 3.2.3 and TALYS 1.9 codes. Several
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Estimation of the slope of nuclear symmetry energy via charge radii of mirror nuclei Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-24 Sakshi Gautam, Anagh Venneti, Sarmistha Banik, B.K. Agrawal
Charge radii of mirror nuclei are calculated by implementing pairing effects with the Hartree-Fock Bogoliubov approximation. Correlations between the difference of charge radii (ΔRch) and slope of nuclear symmetry energy (L) are examined for different mirror nuclei pairs of varying masses using 40 different Skyrme energy density functionals. ΔRch−L correlations are found to be robust for the binding
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Deuteron system in finite volume with particle-dimer picture Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-11 Li-Tan Li, Jin-Yi Pang
This article delves into the application of Dimer images in addressing two-body problems within lattice quantum chromodynamics (LQCD), providing the finite volume energy spectrum of deuterons in the context of S13-D13 coupled-channels. The author commences by introducing the Dimer-particle method and formulating the Lagrangian for the scattering of two fermions. Additionally, the author defines the
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Shape evolution and shape coexistence in even-even Mo isotopic chain Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-11 Y. El Bassem, M. El Adri, A. El Batoul, M. Oulne
The phenomena of shape evolution and shape coexistence within the Molybdenum isotopic chain are investigated using the covariant density functional theory with the parameterizations DD-ME2 and DD-PC1. Furthermore, various ground state properties of this chain are investigated, including binding energy, two-neutron separation energy, charge radii, and two-neutron shell gap. A robust agreement is observed
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State dependence of tunneling processes and thermonuclear fusion Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-10 Roberto Onofrio, Carlo Presilla
We discuss the sensitivity of tunneling processes to the initial preparation of the quantum state. We compare the case of Gaussian wave packets of different positional variances using a generalized Woods-Saxon potential for which analytical expressions of the tunneling coefficients are available. Using realistic parameters for barrier potentials we find that the usual plane wave approximation underestimates
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Predictions for the sPHENIX physics program Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-10 Ron Belmont, Jasmine Brewer, Quinn Brodsky, Paul Caucal, Megan Connors, Magdalena Djordjevic, Raymond Ehlers, Miguel A. Escobedo, Elena G. Ferreiro, Giuliano Giacalone, Yoshitaka Hatta, Jack Holguin, Weiyao Ke, Zhong-Bo Kang, Amit Kumar, Aleksas Mazeliauskas, Yacine Mehtar-Tani, Genki Nukazuka, Daniel Pablos, Dennis V. Perepelitsa, Fanyi Zhao
sPHENIX is a next-generation detector experiment at the Relativistic Heavy Ion Collider, designed for a broad set of jet and heavy-flavor probes of the Quark-Gluon Plasma created in heavy ion collisions. In anticipation of the commissioning and first data-taking of the detector in 2023, a RIKEN-BNL Research Center (RBRC) workshop was organized to collect theoretical input and identify compelling aspects
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Nuclear mass predictions with the naive Bayesian model averaging method Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-05 X.Y. Zhang, W.F. Li, J.Y. Fang, Z.M. Niu
A naive Bayesian model averaging (NBMA) method is developed to predict nuclear masses. In the NBMA method, the weights of different models may be different for each nucleus, which are sensitive to the model accuracies to describe the nuclear masses of the isotopes and isotones with the same proton and neutron numbers of that nucleus. Therefore, there are remarkable local structures for the weights
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Constraining the chirally motivated πΣ−K¯N models with the πΣ photoproduction mass spectra Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-04 A. Cieplý, P.C. Bruns
The paper presents a first time attempt on a combined fit of the K−p low-energy data and the πΣ photoproduction mass spectra, performed without fixing the meson-baryon rescattering amplitudes to a specific πΣ−K¯N coupled channels model obtained from fitting exclusively the K−p data. The formalism adopted to describe the photoproduction process is based on chiral perturbation theory and employs a limited
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Axially symmetric quadrupole-octupole incorporating sextic potential Nucl. Phys. A (IF 1.4) Pub Date : 2024-01-04 M. Chabab, A. El Batoul, L. El Ouaourti
We present an extended application of the analytic quadrupole octupole axially symmetric model, originally employed to study the octupole deformation and vibrations in light actinides using an infinite well potential (IW). In this work, we extend the model's applicability to a broader range of nuclei exhibiting octupole deformation by incorporating a sextic potential instead of the Davidson potential
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Role of multi-neutron transfer channels on fusion enhancement Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-17 Simran Rani, Monika Singh, Pardeep Singh
Fusion reactions 40Ar + 116Sn, 40Ar + 122Sn and 40Ca + 124Sn have been examined by employing coupled channel (CC) approach using code-CCFULL. Here we aim to investigate the influence of multi-neutron transfer channels in addition to coupling of collective excitations on sub-barrier fusion enhancement. Incorporation of inelastic excitations alone reproduced the experimental results for 40Ar + 116Sn
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Quantum entanglement of SO(6)-U(5) transitional nuclei in the interacting boson model-2 (IBM-2) Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-14 M.A. Jafarizadeh, N. Amiri, M. Seidi, M. Ghapanvari
The quantum shape phase transition between the spherical and deformed γ-unstable (U(5)−O(6)) even-even nuclei within the frameworks of Interacting Boson Model-1 and 2 (IBM-1,2) for low-lying states, using the “entanglement entropy” (S) has been studied. In both frameworks, the theoretical results showed that there exist minimum and maximum entanglement values between s bosons in the U(5) and O(6) limits
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Corrigendum to “Peripheral reactions and elastic scattering induced by strongly bound, weakly bound and exotic nuclei” [Nuclear Physics A 1041 (2024) 1–18 122785] Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-09 J.E. Testoni, D. Abriola, G.V. Martí
Abstract not available
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Relation between degrees of collectivity and repetition patterns of quadrupole transition probabilities in the candidates of shape coexistence Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-09 Asgar Hosseinnezhad, Hadi Sabri
In this article, we study the possible relationship between degrees of freedom of collectivity in protons and neutrons' last orbitals and different patterns of quadrupole transition possibilities in the shape coexistence candidates. Because of the dependence of shape coexistence on the arrangement of nucleons in the nuclear structure, we classified the candidates of shape coexistence based on neutrons
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Tensor and isovector–isoscalar terms of relativistic mean field model: Impacts on neutron-skin thickness, charge radius, and nuclear matter Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-06 N. Liliani, A.M. Nugraha, J.P. Diningrum, A. Sulaksono
The origin of the neutron skin thickness, measured by the CREX and PREX collaborations as thin for 40Ca and thick for 28Pb, remains a mystery. We investigate the effects of tensor and nonlinear isovector–isoscalar terms in a relativistic mean-field model (RMF) on the properties of finite nuclei and nuclear matter. Tensor couplings are crucial for better quality binding energies of finite nuclei and
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Imaging constituent quark shape of proton with exclusive vector meson production at HERA Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-07 Wenchang Xiang, Yanbing Cai, Daicui Zhou
We show within proton hot spot picture that the exclusive vector meson production in electron-proton deeply inelastic scattering is sensitive to the individual width of the constituent quarks of the proton. For comparison, we calculate the exclusive J/Ψ production cross-sections in three cases, Bu≥Bd, Bu
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Large-scale shell-model study of two-neutrino double beta decay of 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-01 Deepak Patel, Praveen C. Srivastava, V.K.B. Kota, R. Sahu
Large-scale shell-model calculations have been performed for the study of two-neutrino double-beta (2νββ) decay in 82Se, 94Zr, 108Cd, 124Sn, 128Te, 130Te, 136Xe, and 150Nd. We have employed JUN45 interaction to calculate the nuclear matrix element (NME) for 2νββ decay in 82Se. In the case of 94Zr, the glekpn effective interaction is used. For 108Cd, we have used a realistic effective interaction derived
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Description of intruder levels in the 162,164,166Dy nuclei by two different algebraic approaches Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-06 Z. Jahangiri tazekand, H. Sabri
In this paper, we tried to describe both normal and intruder levels of the ground and first excited beta and gamma rotational bands of 162,164,166Dy deformed nuclei in the framework of the interacting boson model. A normal Hamiltonian of SU(3) dynamical symmetry limit is extended by adding a 2p-2 h excitation term. Also, the results are compared with the predictions of the partial dynamical symmetry
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Lifetime measurement of the Ex = 2485.3 keV level of 25Al populated through 24Mg(p,γ)25Al resonance reaction Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-29 Arkabrata Gupta, Sathi Sharma, Sangeeta Das, Anik Adhikari, Anubhab Mondal, Madhusree Roy Chowdhury, Chandan D Bagdia, Lokesh Tribedi, Vandana Nanal, Abhijit Bisoi, M. Saha Sarkar, S. Sarkar
Results of our experimental study of the 24Mg(p,γ)25Al resonance reaction at E=plab223 keV are presented. The proton beam energy is varied from 220 to 265 keV. An evaporated Mg target with thick Ta backing is used. We remeasure a mean lifetime of τ=6.04−2.65+3.03 fs for the E=x2485.3 keV level of 25Al, using Doppler shift attenuation (DSA) method. Three most successfully used empirical effective interactions
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Comprehension of breakup fusion reactions using forward recoil range distribution measurements Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-02 Suhail A. Tali, Harish Kumar, M. Afzal Ansari, D. Singh, Rahbar Ali, Pankaj K. Giri, Sneha B. Linda, Amritraj Mahato, Nabendu Kumar Deb, R. Kumar, R.N. Ali
To understand the break-up fusion reaction dynamics, the forward recoil range distribution (FRRD) measurements of 12C + 165Ho system at the incident projectile energy of ≈ 88 MeV has been performed. The recoil catcher activation technique followed by the off-line gamma ray spectroscopy was implemented. It is observed that the FRRD measurements of the evaporation residues (ERs) populated via xn and
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TOTEM-ATLAS ambiguity: Shouldn't one worry? Nucl. Phys. A (IF 1.4) Pub Date : 2023-12-01 Vladimir A. Petrov, Nikolai P. Tkachenko
The values of the parameters ρpp,σtotpp and Bpp extracted in the region of Coulomb-nuclear interference (CNI) in the ATLAS and TOTEM experiments at energy s=13 TeV are studied based on the general expression for the Coulomb-nuclear amplitude. Due to the significant differences between these data, we undertake both their joint analysis and the retrieval of parameter values separately for each experiment
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Measurement of fast neutron induced (n,γ) reaction cross-section of 152Sm, 154Sm and 150Nd in the energy range of 0.8 to 2 MeV Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-29 N.S. Tawade, R. Tripathi, T.N. Nag, S. Patra, C.S. Datrik, P.K. Pujari, R.G. Thomas, G. Mishra, A. Kumar, S. De, H. Kumawat
The (n,γ) reaction cross-section of rare earth stable fission products, such as 152Sm, 154Sm and 150Nd, in the neutron energy range of 0.8 to 2 MeV, obtained from 7Li(p,n)7Be reaction, was measured by neutron activation followed by off-line gamma-ray spectrometry. Natural strontium (natSr) has been established as a fast neutron flux monitor in this work, by measuring the natSr(n,γ+n,n′)87Srm reaction
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A model-independent irreducible tensor formalism to analyse the sequential decays of the triple strange process p¯p→Ω¯+Ω−→K+Λ¯K−Λ→K+p¯π+K−pπ− Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-22 Deepak Pachattu
A model-independent irreducible tensor formalism is developed to analyse Ω¯Ω production in p¯p collisions and its subsequent decay via the triple-strange decay process, Ω¯+Ω−→K+Λ¯K−Λ→K+p¯π+K−pπ−. These processes are relevant for the upcoming experiments at PANDA. We not only provide expressions for the density matrix of the ΩΩ¯ system but also for the products at each stage of the decay. The Fano statistical
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Entrance channel dependence of quasi fission in reactions leading to 206Po compound nucleus Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-13 Hajara K., M.M. Musthafa, N. Madhavan, S. Nath, Jagadish Gehlot, , C.V. Midhun, Shaima Akbar, Fathima Shirin Shana, A. Parihari, Rohan Biswas, Amninder Kaur
The evaporation residue (ER) cross sections for the reaction F19+187Re→206Po⁎ are measured, in the excitation energy range of 86.1 to 118.4 MeV. The measured cross sections are compared with that of 30Si + 176Yb reaction populating the same compound nucleus. Theoretical calculations are performed using the coupled - channels calculations for the capture cross sections and statistical model calculations
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Constraints on density dependent MIT bag model parameters for quark and hybrid stars Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-17 Soumen Podder, Suman Pal, Debashree Sen, Gargi Chaudhuri
We compute the equation of state (EoS) of strange quark stars (SQSs) with the MIT Bag model using density dependent bag pressure, characterized by a Gaussian distribution function. The bag pressure's density dependence is controlled by three key parameters namely the asymptotic value (Bas), ΔB(=B0−Bas), and β. We explore various parameter combinations (Bas, ΔB, β) that adhere to the Bodmer-Witten conjecture
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Electromagnetic properties of Λ hypernuclei with a beyond relativistic mean-field approach Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-10 Y.G. Yao, X.Y. Wu, H. Mei
We present a microscopic study of electromagnetic properties of the low-lying states of single-Λ hypernucleus Λ9Be using a quantum-number projected generator coordinate method (HyperGCM) based on covariant density functional theory. All the configurations are restricted to have axial symmetry, with the Λ hyperon in the lowest-energy state. The results are compared to the predictions of a simple particle-rotor
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Impact of Nuclear Rotation Corrections on Alpha Decay Half-Lives of Superheavy Nuclei within 98 ≤ Z ≤ 120 Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-08 Theeb Y.T. Alsultan, Joshua T. Majekodunmi, Raj Kumar, Boon Tong Goh, M. Bhuyan
The influence of nuclear rotation on the decay half-lives of superheavy nuclei within the range 98≤Z≤120 is investigated using the axially deformed relativistic Hartree-Bogoliubov theory in the continuum (DRHBc) with the PC-PK1 parameter set. The deduced DRHBc decay energies (with and without the rotation effect) are compared with those calculated from the macroscopic-microscopic WS4 and the available
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Threshold Anomalies in 9Be + 12C Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-10 F. Torabi, E.F. Aguilera, B.V. Carlson
The extended optical model is used to simultaneously analyze the elastic scattering and fusion data for the weakly-bound system of 9Be + 12C in the low-energy region. Dynamic polarization potentials UF, UD, associated with fusion and direct couplings, respectively, are introduced. Corresponding fitting parameters leading to dispersive potentials are found, which provide good simultaneous descriptions
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3-dimensional flow analysis: A novel tool to study the collision geometry and the Equation-of-State Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-07 Tom Reichert, Jan Steinheimer, Marcus Bleicher
We propose to extend the commonly known flow analysis in the transverse px-py plane to novel flow coefficients based on the angular distribution in the px-pz and py-pz planes. The new flow coefficients, called un and wn (in addition to vn), turn out to be also highly sensitive to the nuclear Equation-of-State and can be used to explore the EoS in more detail than is possible using only vn. As an example
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Investigation of fast neutron reactions in natural lutetium Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-07 A.M. Savrasov, O.M. Gorbachenko, V.M. Morozyuk, I.M. Kadenko, V.A. Zheltonozhsky
The cross sections and isomeric ratios of the cross sections for the reaction 176Lu(n,γ)177m,gLu were obtained for the first time on a base of experimental and evaluated data with the MCNP simulation of scattered neutron spectra. The cross sections of the reactions 175Lu(n,p)175Yb, 175Lu(n,α)172Tm, and 176Lu(n,α)173Tm were precised at a neutron energy of 14.6±0.3 MeV and used for checking up our cross-section
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Investigating the influence of input angular momentum on independence hypothesis in heavy-ion induced fusion reactions Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-07 M. Shariq Asnain, Manoj Kumar Sharma, Mohd. Shuaib, Aquib Siddique, Ishfaq Majeed Bhat, B.P. Singh, R. Prasad
The experimental verification of compound nucleus theory has successfully been performed for light ion induced reactions using proton and α-particle beams on different targets. However, such studies using the heavy ion beams are scarce due to the complex nature of heavy ion interaction process. The present work is an attempt to validate the Bohr's independent hypothesis using heavy ion beam of 18O
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Evaporation residue cross-section measurements for 30Si+142Ce system Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-10 Amninderjeet Kaur, A. Kumar, Chetan Sharma, Neha Dhanda, , N. Madhavan, S. Nath, J. Gehlot, , Chandra Kumar, P. Sherpa, A. Parihari, Jyoti Pandey, A.K. Gupta, H.P. Sharma, B.R. Behera
Evaporation residue (ER) cross-sections were measured for 30Si+142Ce reaction at laboratory energies in the range of 105 - 132 MeV using the HYbrid Recoil mass Analyzer (HYRA) at IUAC, New Delhi. The transmission efficiency of the HYRA was estimated using the calibration reaction 28Si+142Ce. Sub-barrier fusion enhancement was observed when compared with the one-dimensional barrier penetration model
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Probing the hidden-bottom pentaquark resonances in photonuclear bottomonium production near threshold: Differential observables Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-10 E.Ya. Paryev
We study the near-threshold ϒ(1S) meson photoproduction from protons and nuclei by considering incoherent direct non-resonant (γp→ϒ(1S)p, γn→ϒ(1S)n) and two-step resonant (γp→Pbi+→ϒ(1S)p, γn→Pbi0→ϒ(1S)n, i=1, 2, 3; Pb1+,0=Pb+,0(11080), Pb2+,0=Pb+,0(11125), Pb3+,0=Pb+,0(11130)) bottomonium production processes with the main goal of clarifying the possibility to observe the non-strange hidden-bottom
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Quantum entanglement in top quark pair production Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-10 Mira Varma, Oliver K. Baker
Top quarks, the most massive particles in the standard model, attract considerable attention since they decay before hadronizing. This presents physicists with a unique opportunity to directly investigate their properties. In this letter, we expand upon the work of G. Iskander, J. Pan, M. Tyler, C. Weber and O. K. Baker to demonstrate that even with the most massive fundamental particle, we see the
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Peripheral reactions and elastic scattering induced by strongly bound, weakly bound and exotic nuclei Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-04 J.E. Testoni, D. Abriola, G.V. Martí
A phenomenological study of peripheral reactions induced by strongly bound, weakly bound and exotic projectiles on different targets is presented. A large number of experimental elastic scattering differential cross sections at energies close to the Coulomb barrier is studied on the basis of a simple nuclear optical model potential that depends on a small number of parameters. The derived wave functions
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Cluster radioactivity using modified generalized liquid model with a statistical cluster preformation probability Nucl. Phys. A (IF 1.4) Pub Date : 2023-11-02 K.P. Santhosh, V.K. Anjali
The cluster radioactivity of various heavy nuclei have been studied using the modified generalized liquid drop model (MGLDM) with a new statistical cluster preformation probability of Dong et al. [Eur. Phys. J. A 41, 197 (2009)]. The statistical preformation factor obtained obeys the relation for preformation factor or spectroscopic factor, S=Sα(A2−1)/3 of Blendowske et al. [Phys. Rev. Lett. 61, 1930
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(γ, χcJ(J = 0,1)) and (γ, ηc) production in electron-positron annihilation at s=10.6 GeV and 4.6 GeV in the framework of Bethe-Salpeter equation Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-29 Shashank Bhatnagar, Vaishali Guleria
In present work we study the production of ground and excited charmonium states in e−e+→γχcJ(nP)(J=0,1), and e−e+→γηc(nS), through leading order (LO) diagrams, which proceed through exchange of a virtual photon that couples to γ and ηc/χcJ through the triangular quark loop diagram, in the framework of 4×4 Bethe-Salpeter equation (BSE), at center of mass energies s=10.6 GeV (Belle energy), and 4.6 GeV
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Measurement of the T20 component of tensor analyzing power for the incoherent π−-meson photoproduction on a deuteron Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-25 V.V. Gauzshtein, E.M. Darwish, A.I. Fix, A.S. Kuzmenko, M.Ya. Kuzin, M.I. Levchuk, A.Yu. Loginov, D.M. Nikolenko, I.A. Rachek, Yu.V. Shestakov, D.K. Toporkov, A.V. Yurchenko, B.I. Vasilishin, S.A. Zevakov, G.N. Baranov, A.V. Bogomyagkov, V.M. Borin, V.L. Dorokhov, A.N. Zhuravlev, S.E. Karnaev, E.V. Starostina
We present experimental results for T20 component of the tensor analyzing power for incoherent π− photoproduction on a deuteron. The experiment was performed on an internal tensor-polarized gas deuterium target of the VEPP-3 electron storage ring in 2021 using the proton-proton coincidence method. The data are compared with the results of numerical simulation.
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Shell-model study for 204–210Tl isotopes and core excitations across the Z = 82 and N = 126 shell gaps Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-25 Bharti Bhoy, Praveen C. Srivastava
In the present work, the 204–210Tl isotopes have been investigated by performing large-scale shell-model calculations, including configurations allowing both neutron and proton core excitations across the Z=82 and N=126 shell gaps. Inspired by the recent high-spin experimental data, the structure of Tl isotopes has been studied for a considerably large model space. The KHHE interaction has been used
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Nuclear Equation of State and many-body phase-space correlations in the Constrained Molecular Dynamics Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-20 M. Papa
Many-body correlations characterizing the Constrained Molecular Dynamics (CoMD) are analyzed in the case of finite and zero-range effective microscopic interactions. The study begins by analyzing the case of infinite nuclear matter at zero temperature. A comparison with the predictions in the mean-field (MF) limit corresponding to different effective masses, highlights non-negligible differences regarding
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Isotopic dependence of (n,α) reaction cross sections for Fe and Sn nuclei Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-13 S. Küçüksucu, M. Yiğit, N. Paar
The (n,α) reactions play an important role for the energy generation and the synthesis of chemical elements in the stars, as well as for nuclear engineering and medical applications. The aim of this study is to explore the evolution of (n,α) reactions in Fe and Sn isotope chains in order to assess the cross section properties with the increase of neutron number in target nucleus, and to make a comparison
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Experimental 7Be production cross section from the Li7(p,n)7Be reaction at Ep = 3.5 − 13 MeV Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-12 Á. Tóth, Gy. Gyürky, E. Papp, T. Szücs
The Li7(p,n)7Be reaction is widely used as neutron source for neutron induced reaction cross section measurements, and for 7Be radioactive source production. There are two prominent structures in the excitation function, a narrow resonance between Ep=2.2−2.3 MeV, and a broad peak, around Ep=5 MeV. There are tension between the experimental data sets both in the position and the width of this latter
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Fully charmed resonance X(6900) and its beauty counterpart Nucl. Phys. A (IF 1.4) Pub Date : 2023-10-05 S.S. Agaev, K. Azizi, B. Barsbay, H. Sundu
The fully heavy scalar tetraquarks T4Q=QQQ‾Q‾, (Q=c,b) are explored in the context of QCD sum rule method. We model T4Q as diquark-antidiquark systems composed of pseudoscalar constituents, and calculate their masses m(′) and couplings f(′) within the two-point sum rule approach. Our results m=(6928±50)MeV and m′=(18858±50)MeV for masses of the tetraquarks T4c and T4b prove that they can decay to hidden-flavor
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Candidate-nuclei for observation of a bound dineutron. Part I: The (n,2n) nuclear reaction Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-27 N. Dzysiuk, I.M. Kadenko, O.O. Prykhodko
Current research has been performed for the stable isotopes within the 90 < A < 210 mass range in order to select properly those of them to be irradiated with neutrons for observation of a bound dineutron in the output channel. To this end, the neutron capture reaction cross sections were calculated in the (0 - 30) MeV energy range with the TALYS-1.96 code. That was performed in accordance with the
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Coupled channels and production of near-threshold B(⁎)B¯(⁎) resonances in e+e− annihilation Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-22 S.G. Salnikov, A.E. Bondar, A.I. Milstein
The effects of final-state interaction of hadrons, produced in e+e− annihilation near the threshold, are discussed. If there is a loosely bound state or a virtual state in a system of produced hadrons, then the energy dependence of hadroproduction cross section is very strong. Our approach is based on the use of the effective potentials accounting for the interaction between hadrons in the final state
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Semi-microscopic optical-model with channel coupling analysis to describe neutron-nucleus scattering of light and heavy nuclei Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-22 S.M. Al-Rawashdeh, S.R. Mari, S.B. Masadeh
Many studies utilizing various potential models have been conducted on the scattering of nucleons from nuclei. In our study, we added channel coupling to a semi-microscopic optical model. With incident energies between 10 and 30 MeV, we sought to compare the predicted reaction observables for the neutron scattering of the following nuclei: 12C, 16O, 54Fe, 58Ni, 120Sn, and 208Pb. We did this twice,
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Novel features of nuclear spectra of light mass Os isotopes Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-22 J.B. Gupta, Vikas Katoch, S. Sharma
The (N=88-108) light mass Os isotopes exhibit level spectra different from the heavier (N > 108) isotopes. The spectral pattern, for ground, β- and γ- bands is illustrated empirically, and analyzed in terms of the collective rotation vibration model and the algebraic sd Interacting Boson Model IBM-1. The variation of the spectral features with neutron number N has been linked to the odd-A neighbors
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Analysis of the γNΔ and ΔNπ interactions for pion photoproduction Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-19 A. Mariano, C. Barbero, D. Badagnani, D.F. Tamayo Agudelo
In this paper we analyze for the first time the γNΔ excitation vertex from the point of view of the dynamics of the Δ field, Ψμ. That is, we look for the value of the Z parameter, present in all contact invariant Δ-field interaction Lagrangians and usually regarded as redundant, and shift it to contact background non-Δ resonant amplitudes (in this sense it is called “redundant”) by imposing that the
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New equations of state for dense nuclear matter properties Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-14 Anuj Sharma, Mukul Kumar, Sunil Kumar, Virender Thakur, Raj Kumar, Shashi K. Dhiman
In the present work, we investigate the bulk properties of nuclear matter and neutron stars with the newly proposed relativistic parametrizations HPUA, HPUB and HPUC which provides an opportunity to readjust the coupling parameters keeping in view the properties of finite nuclei, nuclear matter and astrophysical constraints. The HPUA, HPUB and HPUC are proposed by fitting both PREX-II + CREX results
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Spin-orbit amplitudes for decays with arbitrary spin Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-11 Xiao-Yu Li, Xiang-Kun Dong, Hao-Jie Jing
In this paper, we propose a method to construct the decay amplitudes in the orbital (L) and spin (S) coupling scheme for particles with arbitrary spins. For the 1→2 decay with only massive particles involved, the angular dependence is completely encoded in the angular momentum part, and the spins of daughter particles are coupled in the rest frame of the mother particle, which contributes only a constant
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Six-dimensional light-front Wigner distribution of the pion Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-06 Yingda Han, Tianbo Liu, Bo-Qiang Ma
We study the recently defined six-dimensional light-front Wigner distributions for the pion case. By using the light-cone spectator model, we calculate the Wigner distributions of the unpolarized, longitudinal-polarized, and transversely-polarized quark in the pion. We present the numerical results of six-dimensional light-front Wigner distributions by fixing certain coordinates. The Wigner distributions
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Second flavor of heavy ions Nucl. Phys. A (IF 1.4) Pub Date : 2023-09-03 Eugene Oks
The existence of the Second Flavor of Hydrogen Atoms (SFHA), predicted theoretically in 2001, has been confirmed by four different types of atomic or molecular experiments, and evidenced by two different types of astrophysical observations. The SFHA is based on the second analytical solution of the standard Dirac equation. Despite this solution is singular at small r, it can be matched with the regular