Article
Astronomy & Astrophysics
V. L. Martinez-Consentino, J. E. Amaro, P. R. Casale, I. Ruiz Simo
Summary: This paper proposes an extended superscaling analysis method for quasielastic electron-scattering data, parametrizing the scaling function as the sum of a symmetric function and a contribution from the phase space of two-particle emission. This approach incorporates both single-particle and two-particle emission processes, and explains the asymmetry of the scaling function. The fitting of parameters allows the model to converge to known data.
Article
Astronomy & Astrophysics
I. Ruiz Simo, I. D. Kakorin, V. A. Naumov, K. S. Kuzmin, J. E. Amaro
Summary: In this study, we derived analytical expressions for the boundaries of the charged current quasielastic double differential cross section in terms of dimensionless energy and momentum transfers, within the scaling formalism. We also demonstrated the suitability of this cross section for implementation in Monte Carlo neutrino event generators, particularly due to its flat peak with respect to neutrino energy. Furthermore, we compared the total cross sections of two models and attributed the enhancement observed in the SuSAM* model to its high-momentum components present in the scaling function.
Article
Physics, Nuclear
K. S. Kim, Soonchul Choi, Tsuyoshi Miyatsu, Myung-Ki Cheoun, Hungchong Kim, W. Y. So
Summary: Charged-current neutrino-nucleus scattering in the quasielastic region is investigated using various relativistic nuclear models. Theoretical results are compared with experimental data from MiniBooNE, T2K, MicroBooNE, and SciBooNE. The double-differential cross sections in terms of kinetic energy and polar angle agree well with the T2K data, but the single-differential cross sections based on energy loss and the total cross sections of incident neutrino energy do not accurately describe the MiniBooNE, MicroBooNE, and SciBooNE data. Differences between the relativistic nuclear models and the experimental data are examined, with a particular focus on the inconsistency between MiniBooNE and MicroBooNE/SciBooNE data when the incident neutrino energies are below 1 GeV.
Article
Physics, Nuclear
A. Nikolakopoulos, R. Gonzalez-Jimenez, N. Jachowicz, K. Niewczas, F. Sanchez, J. M. Udias
Summary: In this study, the interaction between hadrons and nuclei in neutrino oscillation experiments is investigated. By comparing different approaches, the limitations of the cascade model in describing final-state interactions are identified. The results from the T2K experiment provide insights into FSI and suggest the need for caution when applying the cascade model for low nucleon energies.
Article
Astronomy & Astrophysics
J. Alonso, C. A. Arguelles, A. Bungau, J. M. Conrad, B. Dutta, Y. D. Kim, E. Marzec, D. Mishins, S. H. Seo, M. Shaevitz, J. Spitz, A. Thompson, L. Waites, D. Winklehner
Summary: IsoDAR aims to place a high-power cyclotron and target combination as an intense source of antineutrinos near a kiloton-scale neutrino detector in order to study very short-baseline neutrino oscillations and perform precision tests of the weak interaction.
Article
Astronomy & Astrophysics
Michela Negro, Milena Crnogorcevic, Eric Burns, Eric Charles, Lea Marcotulli, Regina Caputo
Summary: With the coincident detections of electromagnetic radiation together with gravitational waves (GW170817) or neutrinos (TXS 0506+056), the new era of multimessenger astrophysics has begun. In this study, the correlation between high-energy astrophysical neutrinos detected by the IceCube Observatory and gamma-ray photons detected by the Fermi Large Area Telescope (LAT) is considered, including the unresolved gamma-ray background (UGRB) and IceCube events. The analysis suggests that up to 60% of the population of unresolved blazars contributing to the UGRB emission may contribute to the total neutrino events observed by IceCube.
ASTROPHYSICAL JOURNAL
(2023)
Article
Physics, Multidisciplinary
Dongjin Oh, Dongjoon Song, Younsik Kim, Shigeki Miyasaka, Setsuko Tajima, Jin Mo Bok, Yunkyu Bang, Seung Ryong Park, Changyoung Kim
Summary: The study reveals that at temperature T-B1g, the B-1g phonon softens due to the formation of an energy gap on the Fermi surface induced by a charge density wave order. This demonstrates a method to investigate Fermi surface instabilities above the superconducting transition temperature through phonon Raman studies.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
Yi Chen, Cedric Lorce
Summary: In this study, we investigate the relativistic polarization and magnetization spatial distributions inside a spin-21 target using the quantum phase-space approach. We propose a physically simpler and more natural picture of the system by defining the polarization-magnetization tensor in terms of a Sachs decomposition instead of the Gordon decomposition of the electromagnetic four-current.
Article
Astronomy & Astrophysics
D. D. Dzhappuev, Yu. Z. Afashokov, I. M. Dzaparova, T. A. Dzhatdoev, E. A. Gorbacheva, I. S. Karpikov, M. M. Khadzhiev, N. F. Klimenko, A. U. Kudzhaev, A. N. Kurenya, A. S. Lidvansky, O. I. Mikhailova, V. B. Petkov, E. I. Podlesnyi, V. S. Romanenko, G. I. Rubtsov, S. V. Troitsky, I. B. Unatlokov, I. A. Vaiman, A. F. Yanin, Ya. V. Zhezher, K. V. Zhuravleva
Summary: This study reports the first evidence of joint production of high-energy neutrinos and gamma-rays in a Galactic source, confirming the interaction between cosmic rays and ambient matter and radiation. By observing a high-energy neutrino event from the direction of the Cygnus Cocoon PeVatron and detecting an excess of atmospheric air showers from the same direction, researchers were able to confirm this phenomenon.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Physics, Nuclear
Petar Marevic, David Regnier, Denis Lacroix
Summary: We demonstrate that collective multiphonon states in atomic nuclei can emerge at high excitation energies by considering quantum fluctuations in the collective space beyond the independent-particle approximation. By mixing several many-body trajectories using an extension of nuclear time-dependent density-functional theory, we investigate the quadrupole response of a nucleus. While a single trajectory can explain the excitation of the first collective quantum, the interference between trajectories leads to the emergence of the second and third quanta. The resulting collective spectrum, almost harmonic, agrees remarkably well with the experimentally observed three quanta of the isoscalar giant quadrupole resonance in 40Ca. This study provides guidance for multiphonon searches in other self-bound systems and showcases the resistance to internal excitation of finite Fermi liquids.
Article
Physics, Condensed Matter
Marius Grundmann
Summary: This study revisits the problem of potential, electrical field, and charge density in a space charge region. Using the Boltzmann approximation, an analytical asymptotic solution is obtained. The exact solution can be found by numerically integrating an analytical function. A comparison is made with the popular abrupt (or depletion) approximation, and an analytical approximation is provided. The analytical approximation for potential, electrical field, and charge density in a space charge (depletion) region shows good agreement with the (numerically) exact solution.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Physics, Nuclear
Cong Pan, Myung-Ki Cheoun, Yong-Beom Choi, Jianmin Dong, Xiaokai Du, Xiao-Hua Fan, Wei Gao, Lisheng Geng, Eunja Ha, Xiao-Tao He, Jinke Huang, Kun Huang, Seonghyun Kim, Youngman Kim, Chang-Hwan Lee, Jenny Lee, Zhipan Li, Zhi-Rui Liu, Yiming Ma, Jie Meng, Myeong-Hwan Mun, Zhongming Niu, Panagiota Papakonstantinou, Xinle Shang, Caiwan Shen, Guofang Shen, Wei Sun, Xiang-Xiang Sun, Jiawei Wu, Xinhui Wu, Xuewei Xia, Yijun Yan, To Chung Yiu, Kaiyuan Zhang, Shuangquan Zhang, Wei Zhang, Xiaoyan Zhang, Qiang Zhao, Ruyou Zheng, Shan-Gui Zhou
Summary: This paper extends the point-coupling DRHBc theory to odd -A and odd-odd nuclei and examines its applicability by calculating the ground-state properties of odd -A Nd isotopes. The results show good agreement with experimental data, paving the way for constructing a DRHBc mass table that includes all even-even, odd -A, and odd-odd nuclei in the nuclear chart.
Article
Astronomy & Astrophysics
Megan Masterson, Erin Kara, Claudio Ricci, Javier A. Garcia, Andrew C. Fabian, Ciro Pinto, Peter Kosec, Ronald A. Remillard, Michael Loewenstein, Benny Trakhtenbrot, Iair Arcavi
Summary: This study presents the X-ray evolution of the active galactic nucleus 1ES 1927+654 based on three years of observations. The X-ray evolution can be divided into three phases, including the early super-Eddington phase, stable super-Eddington phase, and decline phase. The formation of the X-ray corona and the possible origin of the 1 keV feature are also discussed.
ASTROPHYSICAL JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Francisco Restrepo, Junjing Zhao, Juan Carlos Campuzano, Utpal Chatterjee
Summary: Using autocorrelation analysis of angle-resolved photoemission spectroscopy data, we studied the evolution of joint density of states (JDOS) in the pseudogap phase of slightly underdoped Bi2Sr2CaCu2O8+8 (Bi2212) cuprate high temperature superconductors with different temperatures and carrier concentrations. Our analysis showed that the Fermi arcs expand with increasing temperature at a fixed carrier concentration and with increasing carrier concentration at a specific temperature. These observations are consistent with the theoretical scenario of the pseudogap phase being an incoherent d-wave superconductor, where the Fermi arcs are described by a delicate balance between temperature-dependent broadening of single-particle excitations and the magnitude of the pairing gap.
Article
Materials Science, Multidisciplinary
Kunie Ishioka, Alexej Pashkin, Christian Bernhard, Hrvoje Petek, Xin Yao, Jure Demsar
Summary: We investigate coherent lattice dynamics in optimally doped YBa2Cu3O7-delta driven by ultrashort near-infrared and near-ultraviolet pulses. Transient reflectivity experiments reveal Ag-symmetry phonon modes related to bending in the CuO2 planes and stretching at frequencies between 10 and 15 THz. The relative coherent phonon amplitudes are in stark contrast to the relative phonon intensities in the spontaneous Raman scattering spectrum, indicating mode-dependent contributions of Raman and non-Raman mechanisms to coherent phonon generation.
Article
Physics, Nuclear
J. E. Amaro, M. B. Barbaro, J. A. Caballero, R. Gonzalez-Jimenez, G. D. Megias, I. Ruiz Simo
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Maria B. Barbaro, Arturo De Pace, Luisa Fiume
Summary: This work focuses on studying neutrino-nucleus reactions in accelerator experiments, including quasielastic scattering, two-particle-two-hole excitations, and resonances of the nucleon. The nuclear model used is fully relativistic and comparisons with T2K and MicroBooNE data on carbon and argon targets were made, along with predictions for DUNE kinematics.
Article
Physics, Nuclear
Akhilesh Yadav, A. Shukla, M. Ivanov, M. K. Gaidarov
Summary: The nuclear structure systematics and alpha-decay half-lives of superheavy nuclei with Z = 116, 118, 120, and 122 are investigated using various theoretical models. Predictions for unobserved elements are made based on experimentally observed nuclei with Z = 106-118. The calculations suggest significant uncertainty in alpha-decay half-lives due to the sensitivity to Q(alpha) values, despite good agreement in ground-state observables.
Article
Physics, Multidisciplinary
J. E. Amaro, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, R. Gonzalez-Jimenez, G. D. Megias, I Ruiz Simo
Summary: The super-scaling approach (SuSA) model, which is based on analogies between electron and neutrino interactions with nuclei, is reviewed and applied to describe neutrino-nucleus scattering. The model validation includes consideration of both one- and two-body relativistic currents, and comparisons are made between theoretical predictions and cross-section measurements from ongoing neutrino oscillation experiments for inclusive neutrino reactions with change of charge.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2021)
Article
Astronomy & Astrophysics
Sara Cruz-Barrios, Guillermo D. Megias, Juan A. Caballero
Summary: A systematic analysis is conducted on the weak responses for charged-current quasielastic neutrino-nucleus reactions. The analysis is based on a fully relativistic microscopic model that considers momentum-dependent scalar and vector mean field potentials in both initial and final nucleon states. The obtained responses are compared with simpler approaches, including energy-independent potentials and the relativistic plane wave limit. The analysis is also extended to the scaling phenomenon, providing insights into nuclear dynamics.
Article
Multidisciplinary Sciences
Paloma Rodriguez Casale, Jose Enrique Amaro, Maria B. Barbaro
Summary: This study introduces a method to incorporate meson-exchange currents (MEC) within the relativistic mean field model, and applies it to the analysis of quasielastic cross-sectional data on 12C. The results show a departure from scaling behavior, but the data can be parametrized into a discernible band. However, the level of uncertainty is considerable and does not allow for precise extraction of nuclear responses.
Article
Astronomy & Astrophysics
J. M. Franco-Patino, R. Gonzalez-Jimenez, S. Dolan, M. B. Barbaro, J. A. Caballero, G. D. Megias, J. M. Udias
Summary: This study presents a complete comparison of semi-inclusive nu mu-12C cross section measurements by T2K and MINER nu A collaborations with different models. The results show that the relativistic distorted wave impulse approximation method, which accounts for final-state interactions, matches or improves the predictions of GENIE-SuSAv2 for forward angles.
Article
Physics, Nuclear
S. Iqbal, F. Benmokhtar, M. Ivanov, N. See, K. Aniol, D. W. Higinbotham, C. Boyd, A. Gadsby, J. S. Goodwill, D. Finton, A. Boyer, S. Gilad, A. Saha, J. M. Udias, Z. Ye, P. Solvignon, P. Aguilera, Z. Ahmed, H. Albataineh, K. Allada, B. Anderson, D. Anez, J. Annand, J. Arrington, T. Averett, H. Baghdasaryan, X. Bai, A. Beck, S. Beck, V Bellini, A. Camsonne, C. Chen, J-P Chen, K. Chirapatpimol, E. Cisbani, M. M. Dalton, A. Daniel, D. Day, W. Deconinck, M. Defurne, D. Flay, N. Fomin, M. Friend, S. Frullani, E. Fuchey, F. Garibaldi, D. Gaskell, R. Gilman, S. Glamazdin, C. Gu, P. Gueye, C. Hanretty, J-O Hansen, M. Hashemi Shabestari, M. Huang, G. Jin, N. Kalantarians, H. Kang, A. Kelleher, I Korover, J. LeRose, J. Leckey, R. Lindgren, E. Long, J. Mammei, D. J. Margaziotis, P. Markowitz, D. Meekins, Z. Meziani, R. Michaels, M. Mihovilovic, N. Muangma, C. Munoz Camacho, B. Norum, Nuruzzaman, K. Pan, S. Phillips, E. Piasetzky, I Pomerantz, M. Posik, V Punjabi, X. Qian, Y. Qiang, X. Qiu, P. E. Reimer, A. Rakhman, S. Riordan, G. Ron, O. Rondon-Aramayo, L. Selvy, A. Shahinyan, R. Shneor, S. Sirca, K. Slifer, N. Sparveris, R. Subedi, V Sulkosky, D. Wang, J. W. Watson, L. B. Weinstein, B. Wojtsekhowski, S. A. Wood, I Yaron, X. Zhan, J. Zhang, Y. W. Zhang, B. Zhao, X. Zheng, P. Zhu, R. Zielinski
Summary: Experimental cross sections for the He-4(e, e'p)X reactions in a range of missing energy and missing momentum were reported. The observed number of events was significantly higher than predicted by the theoretical model, and there were notable fluctuations in the ratio of data to the theoretical model at certain energy points, which could be possible signals of initial-state multinucleon correlations.
Article
Astronomy & Astrophysics
J. Gonzalez-Rosa, G. D. Megias, J. A. Caballero, M. B. Barbaro
Summary: This study extends the SuSAv2 model, which is used for charged-current neutrino-nucleus cross sections in the quasielastic region, to the full inelastic regime. The model combines phenomenological structure functions with a nuclear scaling function to describe resonance production and deep inelastic reactions in the neutrino sector. Two different descriptions of the Delta resonance region are compared and the model results are tested against experimental data on several nuclei and applied to study charged current inclusive neutrino cross-sections.
Article
Physics, Nuclear
R. Gonzalez-Jimenez, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, N. Jachowicz, G. D. Megias, K. Niewczas, A. Nikolakopoulos, J. W. Van Orden, J. M. Udias
Summary: This study focuses on semi-inclusive cross sections in neutrino-nucleus charged-current reactions on finite nuclei, specifically on the detection of an outgoing muon and a proton in coincidence. The research evaluates the impact of different nuclear effects on the determination of neutrino energy. The results indicate that a significant portion of events can be filtered based on the kinematics of muon and proton, allowing for the determination of neutrino energy with low uncertainties.
Article
Astronomy & Astrophysics
J. M. Franco-Patino, M. B. Barbaro, J. A. Caballero, G. D. Megias
Summary: The study compared semi-inclusive neutrino-nucleus cross sections for different nuclear models and found that contributions beyond PWIA are crucial for explaining experimental measurements. The analysis also revealed that studying correlations between final-state proton and muon kinematics can provide valuable information on relevant nuclear effects such as Fermi motion and final-state interactions.
