Pub Date : 2026-03-01Epub Date: 2025-12-13DOI: 10.1016/j.nuclphysa.2025.123308
Ravina, Devki Nandan Gupta
We investigate advanced electron acceleration in the laser wakefield acceleration (LWFA) regime by exploiting longitudinally tailored plasma density profiles. By engineering the plasma density along the propagation direction, we demonstrate the enhanced control over the injection dynamics and subsequent acceleration of electron bunches. Using a parabolic longitudinal density profile, we show that both the energy and quality of the accelerated electron beams–characterized by energy spread and emittance can be significantly optimized. The study reveals a powerful synergy between the longitudinal plasma density gradient and electron bunch properties, enabling beam characteristics suitable for high-precision applications. Our results provide a practical pathway for designing plasma channels that maximize energy gain while maintaining beam quality, offering new strategies for next-generation compact electron accelerators.
{"title":"Optimizing electron bunch characteristics through longitudinal density tailoring in laser wakefield acceleration","authors":"Ravina, Devki Nandan Gupta","doi":"10.1016/j.nuclphysa.2025.123308","DOIUrl":"10.1016/j.nuclphysa.2025.123308","url":null,"abstract":"<div><div>We investigate advanced electron acceleration in the laser wakefield acceleration (LWFA) regime by exploiting longitudinally tailored plasma density profiles. By engineering the plasma density along the propagation direction, we demonstrate the enhanced control over the injection dynamics and subsequent acceleration of electron bunches. Using a parabolic longitudinal density profile, we show that both the energy and quality of the accelerated electron beams–characterized by energy spread and emittance can be significantly optimized. The study reveals a powerful synergy between the longitudinal plasma density gradient and electron bunch properties, enabling beam characteristics suitable for high-precision applications. Our results provide a practical pathway for designing plasma channels that maximize energy gain while maintaining beam quality, offering new strategies for next-generation compact electron accelerators.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123308"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-11-26DOI: 10.1016/j.nuclphysa.2025.123292
Brunilde Gnoffo , Sara Pirrone , Giuseppe Politi , Enrico De Filippo , Giuseppe Cardella , Elena Geraci , Concettina Maiolino , Nunzia Simona Martorana , Angelo Pagano , Emanuele Vincenzo Pagano , Massimo Papa , Fabio Risitano , Francesca Rizzo , Paolo Russotto , Marina Trimarchi , Cristina Zagami
The isospin dependence of temperatures is investigated in the reactions 78Kr+40Ca and 86Kr+48Ca at 10 AMeV. These reactions were studied in the context of the ISODEC experiment, performed at INFN-Laboratori Nazionali del Sud in Catania, by using the 4π multidetector CHIMERA. The results of the data analysis suggest that the temperature depends on the N/Z ratio. Different thermometric methods,as well as the slope and fluctuations thermometer with the alpha particles as probe and the double isotope yields ratio thermometer are used to extract the temperature of compound nucleus. Higher values of the temperature were observed for the neutron rich system compared to neutron poor one. This trend is confirmed by the comparison with the GEMINI++ statistical model.
研究了78Kr+40Ca和86Kr+48Ca在10 AMeV下的同位旋对温度的依赖性。这些反应在ISODEC实验的背景下进行了研究，在卡塔尼亚的infn - Nazionali del Sud实验室，使用4π多探测器CHIMERA。数据分析结果表明，温度与N/Z比有关。采用了不同的测温方法，以及以α粒子为探针的斜率波动温度计和双同位素产率比温度计来提取复合核的温度。富中子体系的温度高于贫中子体系。与GEMINI++统计模型的比较证实了这一趋势。
{"title":"Isospin dependence of the nuclear temperature in the reactions 78Kr+40Ca and 86Kr+48Ca at 10 AMeV","authors":"Brunilde Gnoffo , Sara Pirrone , Giuseppe Politi , Enrico De Filippo , Giuseppe Cardella , Elena Geraci , Concettina Maiolino , Nunzia Simona Martorana , Angelo Pagano , Emanuele Vincenzo Pagano , Massimo Papa , Fabio Risitano , Francesca Rizzo , Paolo Russotto , Marina Trimarchi , Cristina Zagami","doi":"10.1016/j.nuclphysa.2025.123292","DOIUrl":"10.1016/j.nuclphysa.2025.123292","url":null,"abstract":"<div><div>The isospin dependence of temperatures is investigated in the reactions <sup>78</sup>Kr+<sup>40</sup>Ca and <sup>86</sup>Kr+<sup>48</sup>Ca at 10 AMeV. These reactions were studied in the context of the ISODEC experiment, performed at INFN-Laboratori Nazionali del Sud in Catania, by using the 4<em>π</em> multidetector CHIMERA. The results of the data analysis suggest that the temperature depends on the N/Z ratio. Different thermometric methods,as well as the slope and fluctuations thermometer with the alpha particles as probe and the double isotope yields ratio thermometer are used to extract the temperature of compound nucleus. Higher values of the temperature were observed for the neutron rich system compared to neutron poor one. This trend is confirmed by the comparison with the GEMINI++ statistical model.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123292"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-24DOI: 10.1016/j.nuclphysa.2025.123319
A. Gokul, A.K. Rhine Kumar
The study of atomic nuclei exemplifies the challenge of solving many-body systems, where understanding nuclear structure unveils some of the universe’s deepest mysteries. Since the 1930s, molecular states and nucleon clustering in nuclei have been a topic of great interest. To explore these phenomena, we utilize the Relativistic Hartree-Bogoliubov (RHB) method, which naturally incorporates key relativistic effects such as scalar and vector potentials along with spin-orbit interactions. This research focuses on nucleon clustering in hot nuclei, employing the RHB framework at finite temperatures (FT-RHB). Key parameters, such as the density profile and nucleon-nucleon correlation function, play a crucial role in revealing the mechanisms of cluster formation and deeper aspects of nuclear structure at high temperatures.
{"title":"Clustering in hot 28Si","authors":"A. Gokul, A.K. Rhine Kumar","doi":"10.1016/j.nuclphysa.2025.123319","DOIUrl":"10.1016/j.nuclphysa.2025.123319","url":null,"abstract":"<div><div>The study of atomic nuclei exemplifies the challenge of solving many-body systems, where understanding nuclear structure unveils some of the universe’s deepest mysteries. Since the 1930s, molecular states and nucleon clustering in nuclei have been a topic of great interest. To explore these phenomena, we utilize the Relativistic Hartree-Bogoliubov (RHB) method, which naturally incorporates key relativistic effects such as scalar and vector potentials along with spin-orbit interactions. This research focuses on nucleon clustering in hot nuclei, employing the RHB framework at finite temperatures (FT-RHB). Key parameters, such as the density profile and nucleon-nucleon correlation function, play a crucial role in revealing the mechanisms of cluster formation and deeper aspects of nuclear structure at high temperatures.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123319"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-25DOI: 10.1016/j.nuclphysa.2025.123320
Sakshi Shukla, Praveen C. Srivastava
In the present work, we study nuclear structure properties of the Pb isotopes within the framework of the nuclear shell-model. We have performed shell-model calculations using KHH7B and KHHE interactions. We have reported results for energy spectra, electromagnetic properties such as quadrupole moment (Q), magnetic moment (μ), B(E2), and B(M1) transition strengths, and compared the shell-model results with the available experimental data. The shell-model results for the half-lives and seniority quantum numbers (v) are also reported for the isomeric states.
{"title":"Nuclear structure properties of 184−194Pb isotopes and isomers","authors":"Sakshi Shukla, Praveen C. Srivastava","doi":"10.1016/j.nuclphysa.2025.123320","DOIUrl":"10.1016/j.nuclphysa.2025.123320","url":null,"abstract":"<div><div>In the present work, we study nuclear structure properties of the <span><math><msup><mrow></mrow><mrow><mn>184</mn><mo>−</mo><mn>194</mn></mrow></msup></math></span>Pb isotopes within the framework of the nuclear shell-model. We have performed shell-model calculations using KHH7B and KHHE interactions. We have reported results for energy spectra, electromagnetic properties such as quadrupole moment (<em>Q</em>), magnetic moment (<em>μ</em>), <em>B</em>(<em>E</em>2), and <em>B</em>(<em>M</em>1) transition strengths, and compared the shell-model results with the available experimental data. The shell-model results for the half-lives and seniority quantum numbers (<em>v</em>) are also reported for the isomeric states.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123320"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145883368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Despite substantial advances in nuclear physics, certain subtle aspects remain unresolved, such as the neck rupture process during fission. Particle emission near the scission stage provides valuable insights into this process. This work discusses recent experimental results from the BARC-TIFR Pelletron LINAC Facility (PLF) at Mumbai on heavy-ion induced fission using charged particle emissions. Fission and fission like processes have direct relevance to research pertaining to super heavy elements synthesis. Fission process also facilitates study about a fundamental property of finite nuclear matter; nuclear viscosity. Several questions about the nuclear viscosity are still unanswered. Particle emission during the fission process presents a potential probe to study entire fission process and nuclear viscosity. Recent observations on some novel aspects about nuclear scission from our ongoing program at PLF are presented here.
{"title":"Observation of novel features in heavy-ion induced fission using charged particle emissions","authors":"Y.K. Gupta , G.K. Prajapati , Pawan Singh , N. Sirswal , B.N. Joshi","doi":"10.1016/j.nuclphysa.2025.123315","DOIUrl":"10.1016/j.nuclphysa.2025.123315","url":null,"abstract":"<div><div>Despite substantial advances in nuclear physics, certain subtle aspects remain unresolved, such as the neck rupture process during fission. Particle emission near the scission stage provides valuable insights into this process. This work discusses recent experimental results from the BARC-TIFR Pelletron LINAC Facility (PLF) at Mumbai on heavy-ion induced fission using charged particle emissions. Fission and fission like processes have direct relevance to research pertaining to super heavy elements synthesis. Fission process also facilitates study about a fundamental property of finite nuclear matter; nuclear viscosity. Several questions about the nuclear viscosity are still unanswered. Particle emission during the fission process presents a potential probe to study entire fission process and nuclear viscosity. Recent observations on some novel aspects about nuclear scission from our ongoing program at PLF are presented here.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123315"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Complete and incomplete fusion (CF & ICF) residues have been measured using the online γ-ray spectroscopy method for the reaction induced by 12C and 13C with 51V target at a projectile energy of about 5 MeV/nucleon. Comparison of the measured excitation functions with those calculated using the CASCADE code based on the statistical model revealed the occurrence of ICF reactions in the formation of α-emission products. The results have been discussed in terms of the effect of the α-cluster structure of the projectile on ICF reactions by carrying out systematic comparison among the reactions with 13C and 12C projectiles with different targets. The experimental ICF fraction was deduced by subtracting the CF estimated from CASCADE. The ICF for the 13C projectile is not observed to be suppressed compared to 12C projectile as reported in earlier studies [1, 2] at Ec.m. ≈ 2.5Vb.
{"title":"Measurement of complete and incomplete fusion in 12,13C + 51V system at 5 MeV/A","authors":"Shital Thakur , H. Kumawat , V.V. Parkar , A.S. Bennal","doi":"10.1016/j.nuclphysa.2025.123290","DOIUrl":"10.1016/j.nuclphysa.2025.123290","url":null,"abstract":"<div><div>Complete and incomplete fusion (CF & ICF) residues have been measured using the online <em>γ</em>-ray spectroscopy method for the reaction induced by <sup>12</sup>C and <sup>13</sup>C with <sup>51</sup>V target at a projectile energy of about 5 MeV/nucleon. Comparison of the measured excitation functions with those calculated using the CASCADE code based on the statistical model revealed the occurrence of ICF reactions in the formation of <em>α</em>-emission products. The results have been discussed in terms of the effect of the <em>α</em>-cluster structure of the projectile on ICF reactions by carrying out systematic comparison among the reactions with <sup>13</sup>C and <sup>12</sup>C projectiles with different targets. The experimental ICF fraction was deduced by subtracting the CF estimated from CASCADE. The ICF for the <sup>13</sup>C projectile is not observed to be suppressed compared to <sup>12</sup>C projectile as reported in earlier studies [<span><span>1</span></span>, 2] at E<sub><em>c.m</em>.</sub> ≈ 2.5<em>V<sub>b</sub></em>.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123290"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145682170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-09-12DOI: 10.1016/j.nuclphysa.2025.123246
Kenta Itahashi , Takahiro Nishi , Yoshiki K. Tanaka
Precision spectroscopy of pionic atoms sets constraints to the pion-nucleus interaction and to the vacuum expectation value of the quark condensate in the nuclear medium. We deduce to be reduced to % at the density of about 58 % of the nuclear saturation density compared to that in the vacuum. For further study, we aim to achieve the density dependence of the quark condensate by improving the experimental precision. We develop a new method of inverse-kinematics reaction for the spectroscopy, which may lead to future study of pionic unstable nuclei.
{"title":"Advanced study of chiral symmetry in pionic atoms","authors":"Kenta Itahashi , Takahiro Nishi , Yoshiki K. Tanaka","doi":"10.1016/j.nuclphysa.2025.123246","DOIUrl":"10.1016/j.nuclphysa.2025.123246","url":null,"abstract":"<div><div>Precision spectroscopy of pionic atoms sets constraints to the pion-nucleus interaction and to the vacuum expectation value of the quark condensate <span><math><mrow><mo>〈</mo><mrow><mover><mi>q</mi><mo>¯</mo></mover><mi>q</mi></mrow><mo>〉</mo></mrow></math></span> in the nuclear medium. We deduce <span><math><mrow><mo>〈</mo><mrow><mover><mi>q</mi><mo>¯</mo></mover><mi>q</mi></mrow><mo>〉</mo></mrow></math></span> to be reduced to <span><math><mrow><mn>77</mn><mo>±</mo><mn>2</mn></mrow></math></span>% at the density of about 58 % of the nuclear saturation density compared to that in the vacuum. For further study, we aim to achieve the density dependence of the quark condensate by improving the experimental precision. We develop a new method of inverse-kinematics reaction for the spectroscopy, which may lead to future study of pionic unstable nuclei.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123246"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-11DOI: 10.1016/j.nuclphysa.2026.123323
N. Döpper, N. Kaiser
We present a calculation of neutrino-induced pion production off the nucleon up to one-loop order in covariant SU(2) chiral effective field theory with explicit inclusion of the Δ(1232) resonance. The calculation is carried out by employing the extended-on-mass-shell scheme to handle terms that violate power-counting, and the complex mass scheme to account for the complex pole position of intermediate deltas. Of the 25 next-to-leading and next-to-next-to-leading low-energy constants entering the amplitude, 17 are already determined in non-weak processes, while four are estimated by fitting the axial nucleon-to-delta transition form factors to the Adler parametrization. The remaining four low-energy constants are set to zero. Results for the total and differential cross sections are presented and compared to experimental data from ANL and BNL, and to results from models and event generators.
{"title":"Neutrino-induced single-pion production off the nucleon in covariant chiral perturbation theory with explicit delta degrees of freedom","authors":"N. Döpper, N. Kaiser","doi":"10.1016/j.nuclphysa.2026.123323","DOIUrl":"10.1016/j.nuclphysa.2026.123323","url":null,"abstract":"<div><div>We present a calculation of neutrino-induced pion production off the nucleon up to one-loop order in covariant SU(2) chiral effective field theory with explicit inclusion of the Δ(1232) resonance. The calculation is carried out by employing the extended-on-mass-shell scheme to handle terms that violate power-counting, and the complex mass scheme to account for the complex pole position of intermediate deltas. Of the 25 next-to-leading and next-to-next-to-leading low-energy constants entering the amplitude, 17 are already determined in non-weak processes, while four are estimated by fitting the axial nucleon-to-delta transition form factors to the Adler parametrization. The remaining four low-energy constants are set to zero. Results for the total and differential cross sections are presented and compared to experimental data from ANL and BNL, and to results from models and event generators.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123323"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2025-12-16DOI: 10.1016/j.nuclphysa.2025.123309
V. Parvathi, A. K. Rhine Kumar
Collective enhancement in nuclear level density (CELD) is a key phenomenon in the calculation of nuclear level density (NLD) arising from the coupling of intrinsic excitations with collective rotational and vibrational modes. This effect is especially pronounced in well-deformed nuclei, where rotational motion significantly increases the density of states at low excitation energies. However, increasing excitation energy leads to a gradual fadeout of this enhancement. In this study, we investigate CELD and its fadeout in the 169Tm nucleus, using the Finite-Temperature BCS (FTBCS) approach to calculate the intrinsic level density and incorporating rotational effects through a deformation-dependent enhancement factor. By examining free energy surfaces and shape transitions across different excitation energies and angular momenta, we aim to investigate the relationship between nuclear deformation and the emergence or suppression of collective effects. The results provide a comprehensive understanding of how shape evolution influences CELD behaviour in excited nuclear systems. However, the theoretically predicted fadeout energy is significantly higher than the experimentally observed value.
{"title":"Collective enhancement in nuclear level density and shape transitions in 169Tm","authors":"V. Parvathi, A. K. Rhine Kumar","doi":"10.1016/j.nuclphysa.2025.123309","DOIUrl":"10.1016/j.nuclphysa.2025.123309","url":null,"abstract":"<div><div>Collective enhancement in nuclear level density (CELD) is a key phenomenon in the calculation of nuclear level density (NLD) arising from the coupling of intrinsic excitations with collective rotational and vibrational modes. This effect is especially pronounced in well-deformed nuclei, where rotational motion significantly increases the density of states at low excitation energies. However, increasing excitation energy leads to a gradual fadeout of this enhancement. In this study, we investigate CELD and its fadeout in the <sup>169</sup>Tm nucleus, using the Finite-Temperature BCS (FTBCS) approach to calculate the intrinsic level density and incorporating rotational effects through a deformation-dependent enhancement factor. By examining free energy surfaces and shape transitions across different excitation energies and angular momenta, we aim to investigate the relationship between nuclear deformation and the emergence or suppression of collective effects. The results provide a comprehensive understanding of how shape evolution influences CELD behaviour in excited nuclear systems. However, the theoretically predicted fadeout energy is significantly higher than the experimentally observed value.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1067 ","pages":"Article 123309"},"PeriodicalIF":2.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this work, we study the ground-state masses, magnetic properties, and decay behaviors of doubly heavy and baryons within the framework of the hypercentral Constituent Quark Model (hCQM) based on a QCD-inspired non-relativistic formalism. The six-dimensional hyperradial Schrödinger equation, describing the three-quark system under a phenomenological hypercentral potential, is solved using a combination of the matrix Numerov and shooting methods to obtain the wave functions, eigenenergies, and mass spectra. The key aspect of our numerical approach is the introduction of a cutoff distance, , which is determined through fitting the calculated mass spectrum to the available experimental data. We compute static and dynamic observables, including magnetic moments, transition magnetic moments, radiative decay widths, and semileptonic decay rates along with their branching fractions for both and states. Radiative decay widths are derived from the transition magnetic moments, while semileptonic decay widths and branching ratios are calculated using a specific form of the universal Isgur-Wise function (IWF). Due to the current lack of experimental data, our results are compared with various theoretical predictions including Lattice QCD results, QCD sum rules formalism and other hCQM’s. Our results show reasonably good agreement with existing theoretical predictions in the literature. The results of this study are expected to support ongoing and future investigations into the identification of possible baryon resonances.
{"title":"Electromagnetic and weak semileptonic decay analysis of Ω and Ξ baryons within QCD-Inspired non-relativistic formalism","authors":"D.R. Bipolo , S.Y. Loemba Mouandza , A.A. Atangana Likéné , H.D. Yia Etolo , T.B. Ekogo , G.H. Ben-Bolie","doi":"10.1016/j.nuclphysa.2025.123266","DOIUrl":"10.1016/j.nuclphysa.2025.123266","url":null,"abstract":"<div><div>In this work, we study the ground-state masses, magnetic properties, and decay behaviors of doubly heavy <span><math><mstyle><mi>Ω</mi></mstyle></math></span> and <span><math><mstyle><mi>Ξ</mi></mstyle></math></span> baryons within the framework of the hypercentral Constituent Quark Model (hCQM) based on a QCD-inspired non-relativistic formalism. The six-dimensional hyperradial Schrödinger equation, describing the three-quark system under a phenomenological hypercentral potential, is solved using a combination of the matrix Numerov and shooting methods to obtain the wave functions, eigenenergies, and mass spectra. The key aspect of our numerical approach is the introduction of a cutoff distance, <span><math><msub><mi>r</mi><mi>c</mi></msub></math></span>, which is determined through fitting the calculated mass spectrum to the available experimental data. We compute static and dynamic observables, including magnetic moments, transition magnetic moments, radiative decay widths, and semileptonic decay rates along with their branching fractions for both <span><math><mrow><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><msup><mfrac><mn>1</mn><mn>2</mn></mfrac><mo>+</mo></msup></mrow></math></span> and <span><math><mrow><msup><mi>J</mi><mi>P</mi></msup><mo>=</mo><msup><mfrac><mn>3</mn><mn>2</mn></mfrac><mo>+</mo></msup></mrow></math></span> states. Radiative decay widths are derived from the transition magnetic moments, while semileptonic decay widths and branching ratios are calculated using a specific form of the universal Isgur-Wise function (IWF). Due to the current lack of experimental data, our results are compared with various theoretical predictions including Lattice QCD results, QCD sum rules formalism and other hCQM’s. Our results show reasonably good agreement with existing theoretical predictions in the literature. The results of this study are expected to support ongoing and future investigations into the identification of possible baryon resonances.</div></div>","PeriodicalId":19246,"journal":{"name":"Nuclear Physics A","volume":"1066 ","pages":"Article 123266"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145468493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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