Article
Astronomy & Astrophysics
K. S. Kim, Hana Gil, Chang Ho Hyun
Summary: Charged-current neutrino-nucleus scattering in the quasielastic region is investigated using the KIDS nuclear energy density functional. Uncertainties arising from the axial mass and in-medium effective mass of the nucleon are examined. By comparing with experimental data, constraints on the axial mass and effective mass compatible with the data are obtained. The total cross section is found to be insensitive to the effective mass, allowing for the determination of the axial mass independently of the effective mass uncertainty. Differential cross sections at different kinematics, however, are sensitive to both the effective mass and axial mass. Within the uncertainty range of the axial mass constrained by the total cross section, the dependence on the effective mass is examined. As a result, the axial mass and effective mass consistent with the experimental data are obtained.
Article
Astronomy & Astrophysics
S. Abe, S. Asami, M. Eizuka, S. Futagi, A. Gando, Y. Gando, T. Gima, A. Goto, T. Hachiya, K. Hata, K. Ichimura, S. Ieki, H. Ikeda, K. Inoue, K. Ishidoshiro, Y. Kamei, N. Kawada, Y. Kishimoto, M. Koga, M. Kurasawa, T. Mitsui, H. Miyake, T. Nakahata, K. Nakamura, R. Nakamura, H. Ozaki, T. Sakai, I. Shimizu, J. Shirai, K. Shiraishi, A. Suzuki, Y. Suzuki, A. Takeuchi, K. Tamae, H. Watanabe, Y. Yoshida, S. Obara, A. K. Ichikawa, S. Yoshida, S. Umehara, K. Fushimi, K. Kotera, Y. Urano, B. E. Berger, B. K. Fujikawa, J. G. Learned, J. Maricic, S. N. Axani, Z. Fu, J. Smolsky, L. A. Winslow, Y. Efremenko, H. J. Karwowski, D. M. Markoff, J. A. Detwiler, S. Enomoto, M. P. Decowski, C. Grant, A. Li, H. Song, S. Dell'Oro, T. O'Donnell
Summary: We measured the strange axial coupling constant gsA using atmospheric neutrino data at KamLAND. This constant is a component of the axial form factor of the neutral-current quasielastic (NCQE) interaction. The value of gsA significantly affects the ratio of proton and neutron NCQE cross sections. KamLAND is well-suited for such measurements due to its ability to detect nucleon recoils with low-energy thresholds and measure neutron multiplicity with high efficiency.
Article
Physics, Particles & Fields
Igor D. Kakorin, Konstantin S. Kuzmin, Vadim A. Naumov
Summary: An empirical rule-of-thumb is suggested for calculating the cross sections of charged-current quasielastic (CCQE) and CCQE-like interactions of neutrinos and antineutrinos with nuclei. Comparisons with earlier and current accelerator data show good overall agreement over a wide energy range. Various problematical issues common to contemporary models of neutrino-nucleus scattering are also discussed.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Oleksandr Tomalak
Summary: In this study, the scattering of neutrinos on polarized and unpolarized free nucleons was examined, along with the polarization of recoil particles in these scatters. The parity-violating weak interaction leads to significant spin asymmetries, providing opportunities for future polarization measurements to access the proton axial structure and extract the pseudoscalar form factor from neutrino data without conventional assumptions. The pseudoscalar form factor can be determined through precise measurements with certain energy neutrinos, while the axial form factor can be extracted from scattering measurements using accelerator neutrinos of all energies.
Review
Physics, Multidisciplinary
Luis Alvarez-Ruso, Eduardo Saul-Sala
Summary: The excess of electron-like events measured by MiniBooNE challenges our understanding of neutrinos and their interactions, with ongoing efforts to resolve the issue. Experimental backgrounds, neutrino interactions with matter, and the difficulties reconciling findings with global oscillation analysis are key areas of study. Proposed solutions to the puzzle involve unconventional neutrino-interaction mechanisms.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2021)
Article
Astronomy & Astrophysics
A. Butkevich
Summary: Flux-integrated semiexclusive differential cross sections for charged-current quasielastic and neutral-current elastic neutrino scattering on argon are analyzed. The cross sections are calculated using the relativistic distorted-wave impulse approximation. The effects of strange quark contributions and short baseline neutrino oscillations are taken into account.
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
Astronomy & Astrophysics
Chen Chen, Christian S. Fischer, Craig D. Roberts, Jorge Segovia
Summary: The parameter-free predictions for the nucleon's axial and induced pseudoscalar form factors have been obtained using a symmetry-preserving Poincare-covariant quark+diquark Faddeev equation treatment. The results provide reliable estimates for the axial and pseudoscalar charges, as well as insights into the flavour-separated quark axial charges and the impact of strong diquark correlations in the nucleon Faddeev wave function, laying a solid foundation for analyses of neutrino-nucleus and antineutrino-nucleus cross-sections relevant to modern accelerator neutrino experiments.
Article
Astronomy & Astrophysics
Ulrich Sauerwein, Matthias F. M. Lutz, Rob G. E. Timmermans
Summary: In this study, axial-vector form factors of the baryon octet are considered within the framework of flavor-SU(3) chiral perturbation theory. The baryon octet and decuplet, as well as the pseudoscalar-meson octet, are explicitly included. The use of on-shell meson and baryon masses in the one-loop contributions to the axial-vector form factors and their consistent treatment in terms of chiral power counting are explored. The convergence properties of this approach are examined, and the potential for comparison to upcoming QCD lattice data is discussed.
Article
Physics, Nuclear
Shoya Ogawa, Takuma Matsumoto, Yoshiko Kanada-En'yo, Kazuyuki Ogata
Summary: The multistep effects among bound, resonant, and nonresonant states have been investigated using the Continuum-Discretized Coupled-Channels method (CDCC). A novel approach was proposed for treating fragmented resonant states without model-space dependence, shedding light on the multistep contributions to cross sections in nuclear scattering reactions. The study also delved into multistep effects in proton inelastic scattering involving ground, 2(1)(+) resonant, and nonresonant states in He-6.
Article
Astronomy & Astrophysics
Igor D. Kakorin, Konstantin S. Kuzmin
Summary: The study analyzed experimental data on charged-current single pion production through the decay of intermediate nucleon and baryon resonances, measured on hydrogen and deuterium targets in accelerator experiments. The analysis fine tuned the nonresonance noninterfering background contribution and determined the current resonance axial-vector mass of the nucleon. By revising the phenomenological model and experimental dataset for fits and modifying the likelihood analysis method, slightly different model parameters were obtained.
Article
Astronomy & Astrophysics
A. Papadopoulou, A. Ashkenazi, S. Gardiner, M. Betancourt, S. Dytman, L. B. Weinstein, E. Piasetzky, F. Hauenstein, M. Khachatryan, S. Dolan, G. D. Megias, O. Hen
Summary: Testing neutrino event generators using high-precision inclusive electron-scattering data overcomes experimental difficulties and provides adequate description of data in the QE- and MEC-dominated lower energy transfer regime, especially when using the SuSAv2 models. However, higher energy transfer interactions, dominated by resonance production, are still not well modeled by e-GENIE.
Article
Physics, Multidisciplinary
H. Bonet, A. Bonhomme, C. Buck, K. Fuelber, J. Hakenmueller, G. Heusser, T. Hugle, M. Lindner, W. Maneschg, T. Rink, H. Strecker, R. Wink
Summary: In this study, the CONUS detectors at the Brokdorf nuclear power plant in Germany were used to measure the coherent elastic scattering of electron antineutrinos emitted from a reactor off germanium nuclei, determining an upper limit of 85 neutrino events at a 90% confidence level. The results disfavor quenching parameters above 0.27.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
A. Galindo-Uribarri, O. G. Miranda, G. Sanchez Garcia
Summary: We propose the use of isotopically highly enriched detectors for the precise study of CEvNS. By using different isotopes in combination, this method allows for precision neutrino physics, testing Standard Model predictions, and probing new physics scenarios. The simultaneous differential CEvNS measurements with detectors of different isotopic composition can cancel systematic errors and provide extra sensitivity. The method has been demonstrated with three examples, showing its potential for high-precision robust measurements and resolving degeneracies in new physics scenarios.
Article
Physics, Multidisciplinary
D. Akimov, P. An, C. Awe, P. S. Barbeau, B. Becker, V. Belov, I. Bernardi, M. A. Blackston, C. Bock, A. Bolozdynya, J. Browning, B. Cabrera-Palmer, D. Chernyak, E. Conley, J. Daughhetee, J. Detwiler, K. Ding, M. R. Durand, Y. Efremenko, S. R. Elliott, L. Fabris, M. Febbraro, A. Gallo Rosso, A. Galindo-Uribarri, M. P. Green, M. R. Heath, S. Hedges, D. Hoang, M. Hughes, T. Johnson, A. Khromov, A. Konovalov, E. Kozlova, A. Kumpan, L. Li, J. M. Link, J. Liu, K. Mann, D. M. Markoff, J. Mastroberti, P. E. Mueller, J. Newby, D. S. Parno, S. I. Penttila, D. Pershey, R. Rapp, H. Ray, J. Raybern, O. Razuvaeva, D. Reyna, G. C. Rich, J. Ross, D. Rudik, J. Runge, D. J. Salvat, A. M. Salyapongse, K. Scholberg, A. Shakirov, G. Simakov, G. Sinev, W. M. Snow, V. Sosnovstsev, B. Suh, R. Tayloe, K. Tellez-Giron-Flores, I. Tolstukhin, E. Ujah, J. Vanderwerp, R. L. Varner, C. J. Virtue, G. Visser, T. Wongjirad, Y. -R. Yen, J. Yoo, C. -H. Yu, J. Zettlemoyer
Summary: The cross section of coherent elastic neutrino-nucleus scattering (CEvNS) was measured using a CsI[Na] scintillating crystal in a high flux of neutrinos. The COHERENT Collaboration achieved the most precise measurement of CEvNS yet, which is consistent with the standard model. The results placed leading constraints on neutrino nonstandard interactions and tested lepton flavor universality and weak mixing angle.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
E. Hernandez, J. Nieves, F. Sanchez, J. E. Sobczyk
Summary: Due to the difficulty in directly measuring the upsilon(tau)((upsilon) over bar (tau))A(Z) -> tau(-/+) X reaction, information on the dynamics of this nuclear process is extracted from the analysis of energy and angular distributions of the observable products of tau decay. The study presents the general expression for the energy and angular differential cross section of outgoing hadrons (pion or rho meson) in the sequential upsilon(tau) A(Z) -> tau(-) (pi(-)upsilon(tau), rho(-)upsilon(tau))X and (upsilon) over bar (tau)A(Z) -> tau(+) (pi(+)(upsilon) over bar (tau), rho(+)(upsilon) over bar (tau)) X reactions.
Article
Physics, Particles & Fields
Neus Penalva, Eliecer Hernandez, Juan Nieves
Summary: In this study, we investigate the d(2)Gamma(d)/(d omega d cos theta(d)), d Gamma(d)/d cos theta(d), and d Gamma(d)/dE(d) distributions defined in terms of the visible energy and polar angle of the charged particle from tau-decay. We consider the deviations from the predictions of the standard model and the construction of new physics operators using both right- and left-handed neutrino fields. Results are presented for Lambda(b) -> Lambda(c)tau and (B) over bar -> D-(*())tau sequential decays, which could be used to distinguish between different new physics models.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Vadim Baru, Xiang-Kun Dong, Meng-Lin Du, Arseniy Filin, Feng-Kun Guo, Christoph Hanhart, Alexey Nefediev, Juan Nieves, Qian Wang
Summary: In this paper, we discuss the general features of the effective range expansion, including the content of its parameters with respect to near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations, and unstable constituents. As illustrative examples, we analyze the properties of the chi(c1)(3872) and T-cc(+) states, supporting the claim that these exotic states have a predominantly molecular nature.
Correction
Physics, Particles & Fields
Neus Penalva, Eliecer Hernandez, Juan Nieves
Summary: In the original version, the bottom-right panel of figure 10 was incorrect. We mistakenly repeated the tau -> pi v(tau) panel instead of presenting the tau -> pv(tau) one. The corrected figure is provided below (only the bottom-right panel changes).
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Multidisciplinary Sciences
Teng Ji, Xiang-Kun Dong, Miguel Albaladejo, Meng-Lin Du, Feng-Kun Guo, Juan Nieves, Bing-Song Zou
Summary: We propose that the X(3915) observed in the J/psi x channel is the same as the chi(c2)(3930), while the X(3960) observed in the Ds+Ds- channel is an S-wave Ds+Ds- hadronic molecule. Additionally, we find that the B+ -> D+D-K+ component with J(PC) = 0(++) assigned to the X(3915) in the current Review of Particle Physics has the same origin as the X(3960) with a mass of around 3.94 GeV. By analyzing available data in the D (D) over bar and Ds+Ds- channels from B decays and gamma gamma fusion reaction, considering both the D (D) over bar -D-s(D) over bar (s)-D*(D) over bar*-D-s*(D) over bar (s)* coupled channels with 0(++) and a 2(++) state introduced additionally, we find that all the data in different processes can be simultaneously well reproduced, and four hidden-charm scalar molecular states with masses around 3.73, 3.94, 3.99, and 4.23 GeV are produced. These results may deepen our understanding of the spectrum of charmonia and the interactions between charmed hadrons.
Article
Astronomy & Astrophysics
Paloma Rodriguez Casale, Jose E. Amaro, Victor L. Martinez-Consentino, Ignacio Ruiz Simo
Summary: This study re-examines superscaling in electron scattering from nuclei, with a focus on the definition of averaged single-nucleon responses. The validity of extrapolating nucleon responses in the Fermi gas, which lacked theoretical foundation, is examined. To address this issue, new averaged responses with a smeared momentum distribution around the Fermi surface are introduced, allowing for momenta above the Fermi momentum. This approach solves the problem of negativity in extrapolation and validates its use in scaling analysis. This work has important implications for interpreting scaling data and contributes to a more complete understanding of the scaling approach.
Article
Astronomy & Astrophysics
I. Vidana, A. Feijoo, M. Albaladejo, J. Nieves, E. Oset
Summary: We conducted a study on the femtoscopic correlation functions for the D0D*+ and D+D*0 channels that form the Tcc state. By developing a formalism that factorizes the scattering amplitudes, we were able to calculate the integrals involving the strong interaction explicitly. Our results show that for a source size of 1 fm, the correlation functions for the D0D*+ and D+D*0 channels near the origin are approximately 30 and 2.5, respectively, and these observables converge to unity at a relative momentum of about 200 MeV. Our tests indicate that the correlation functions mostly provide information on the scattering length, but with higher precision measurements, the effective range of the D0D*+ channel could also be obtained.
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
Physics, Nuclear
V. Montesinos, M. Albaladejo, J. Nieves, L. Tolos
Summary: The properties of tetraquark-like states Tcc(3875)+ and Tc over bar c over bar (3875)- are modified in dense nuclear matter. Changes in the spectral functions and scattering amplitudes of heavy quark mesons in a nuclear medium lead to important modifications in the exotic states, with the density playing a crucial role. The distinctive density patterns observed hint at the existence of molecular components in these states, differentiating them from compact quark structures.
Article
Astronomy & Astrophysics
Meng-Lin Du, Eliecer Hernandez, Juan Nieves
Summary: This study uses a heavy quark effective theory scheme to investigate the matrix elements between Lambda(b) and Lambda(c) resonances. The results show that the scheme can reasonably describe the experimental data and provide support for the possibility of the resonances forming a heavy quark spin symmetry doublet. However, the accuracy of the lattice QCD description of these resonances needs further improvement to determine the effects of threshold positions and to confirm if they are HQSS partners. Additionally, the study also provides an explanation for the large deviations from the predicted values in the semileptonic decay widths near zero recoil.
Article
Astronomy & Astrophysics
F. Zaidi, V. Ansari, M. Sajjad Athar, H. Haider, I. Ruiz Simo, S. K. Singh
Summary: In this study, the nuclear medium effects in nu(tau)/(nu) over bar (tau) interactions from nuclei in the deep inelastic scattering region are investigated and applied to the Ar-40 nucleus to obtain the scattering cross sections for the proposed DUNE experiment. The free nucleon structure functions are calculated and convoluted with the nucleon spectral function in the nucleus to obtain the nuclear structure functions. Corrections due to pi and rho mesons, as well as shadowing and antishadowing effects in the relevant kinematic region, are also included.
Article
Astronomy & Astrophysics
Meng-Lin Du, Neus Penalva, Eliecer Hernandez, Juan Nieves
Summary: This paper utilizes lattice determination to study the role of the Lambda(b) -> Lambda(c)* (2595)tau(nu) over bar (tau) and Lambda(c) (2625)tau(nu) over bar (tau) semileptonic decays in lepton flavor universality violation studies. By analyzing different observables, the paper compares the results obtained in the Standard Model and other schemes containing new physics interactions. The analysis shows that these decay reactions already have the potential to distinguish between different new physics scenarios, and this potential will improve with more precise form factors.
Article
Physics, Particles & Fields
M. Albaladejo, J. Nieves
Summary: We discuss a model-independent estimator for the likelihood of compositeness of a shallow S-wave bound or virtual state. The estimator is based on an extension of Weinberg's relations and only relies on the proximity of the state's energy to the two-hadron threshold. By analyzing cases such as the deuteron, nucleon virtual state, and exotic Ds*(2317)+/-, we find strong support for the molecular interpretation in all cases, except for Ds*(2317)+/- where the method's applicability reaches its limit.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Meng-Lin Du, Miguel Albaladejo, Feng-Kun Guo, Juan Nieves
Summary: This study presents a combined analysis of BESIII data on the Z(c)(3900) and Z(cs)(3985) structures, concluding that Z(cs)(3985) is an SU(3) flavor partner of Z(c)(3900). It also successfully reproduces the spectra in both the hidden-charm and hidden-charm strange sectors, supporting the placement of Z(cs)(3985) and Z(c)(3900) in the same SU(3) octet multiplet.
Article
Astronomy & Astrophysics
Meng-Lin Du, Vadim Baru, Xiang-Kun Dong, Arseniy Filin, Feng-Kun Guo, Christoph Hanhart, Alexey Nefediev, Juan Nieves, Qian Wang
Summary: In this study, a coupled-channel approach is applied to investigate the charged tetraquark state T-cc(+) recently discovered by the LHCb Collaboration. The observed line shape in the three-body (DD0)-D-0 pi(+) channel is fitted to determine the parameters of the interaction. Special attention is paid to the three-body dynamics in the T-cc(+) and it is argued that considering both the pion exchange between the D and D* mesons and the finite D* width is essential for a self-consistent approach. It is found that the T-cc(+) is a hadronic molecule generated by the interactions in the D*D-+(0) and D*D-0(+) channels, with a compositeness parameter close to unity. Additionally, a predicted isoscalar D* D* molecular partner of the T-cc(+) is proposed under certain assumptions.
Article
Astronomy & Astrophysics
Nelson R. F. Braga, Octavio C. Junqueira
Summary: This study investigates the influence of rotation on the transition temperature of strongly interacting matter produced in non-central heavy ion collisions. By using a holographic description of an AdS black hole, the authors extend the analysis to the more realistic case where the matter spreads over a region around the rotational axis. The results show the coexistence of confined and deconfined phases and are consistent with the concept of local temperature in rotating frames developed by Tolman and Ehrenfest.
Article
Astronomy & Astrophysics
Bing Sun, Jiachen An, Zhoujian Cao
Summary: This paper investigates the effect of gravitational constant variation on the propagation of gravitational waves. By employing two analytical methods, the study finds that variations in the gravitational constant result in amplitude and phase corrections for gravitational waves, and the time variation of the gravitational constant can be constrained through the propagation of gravitational waves.
Article
Astronomy & Astrophysics
Abdellah Touati, Zaim Slimane
Summary: This letter presents the first study of Hawking radiation as a tunneling process within the framework of non-commutative gauge theory of gravity. The non-commutative Schwarzschild black hole is reconstructed using the Seiberg-Witten map and the star product. The emission spectrum of outgoing massless particles is computed using the quantum tunneling mechanism. The results reveal pure thermal radiation in the low-frequency scenario, but a deviation from pure thermal radiation in the high-frequency scenario due to energy conservation. It is also found that noncommutativity enhances the correlations between successively emitted particles.
Article
Astronomy & Astrophysics
Shahar Hod
Summary: The travel times of light signals between two antipodal points on a compact star's surface are calculated for two different trajectories. It is shown that, for highly dense stars, the longer trajectory along the surface may have a shorter travel time as measured by asymptotic observers. A critical value of the dimensionless density-area parameter is determined for constant density stars to distinguish cases where crossing through the star's center or following a semi-circular trajectory on the surface has a shorter travel time as measured by asymptotic observers.
