Article
Physics, Multidisciplinary
K. Miwa, J. K. Ahn, Y. Akazawa, T. Aramaki, S. Ashikaga, S. Callier, N. Chiga, S. W. Choi, H. Ekawa, P. Evtoukhovitch, N. Fujioka, M. Fujita, T. Gogami, T. Harada, S. Hasegawa, S. H. Hayakawa, R. Honda, S. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, M. Ieiri, M. Ikeda, K. Imai, Y. Ishikawa, S. Ishimoto, W. S. Jung, S. Kajikawa, H. Kanauchi, H. Kanda, T. Kitaoka, B. M. Kang, H. Kawai, S. H. Kim, K. Kobayashi, T. Koike, K. Matsuda, Y. Matsumoto, S. Nagao, R. Nagatomi, Y. Nakada, M. Nakagawa, I Nakamura, T. Nanamura, M. Naruki, S. Ozawa, L. Raux, T. G. Rogers, A. Sakaguchi, T. Sakao, H. Sako, S. Sato, T. Shiozaki, K. Shirotori, K. N. Suzuki, S. Suzuki, M. Tabata, C. D. L. Taille, H. Takahashi, T. Takahashi, T. N. Takahashi, H. Tamura, M. Tanaka, K. Tanida, Z. Tsamalaidze, M. Ukai, H. Umetsu, S. Wada, T. O. Yamamoto, J. Yoshida, K. Yoshimura
Summary: The differential cross sections of the Sigma(-) p -> Lambda n reaction were accurately measured and precise angular information about the reaction was obtained for the first time. The obtained differential cross sections show a slightly forward-peaking structure. These results play an essential role in updating the theoretical models of baryon-baryon interactions.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Nuclear
Johann Haidenbauer, Ulf-G Meissner
Summary: The complexity of threshold phenomena is exemplified by the structure in the Lambda p cross section at the opening of the Sigma N channel. The mass splitting between the Sigma baryons and angular momentum coupling in the S-3(1) - D-3(1) partial wave imply the involvement of up to six channels. Evidence for a strangeness S = -1 dibaryon is provided with predictions for level shifts and widths of Sigma(-)p atomic states.
Article
Physics, Particles & Fields
Hongxia Huang, Jialun Ping, Xinmei Zhu, Fan Wang
Summary: This study investigates the existence of fully heavy dibaryons Omega(ccc)Omega(bbb), Omega(ccb)Omega(bbc), Omega(ccc)Omega(ccc), and Omega(bbb)Omega(bbb) with specific quantum numbers in a constituent quark model framework. The findings suggest that under certain conditions, fully heavy dibaryons composed of specific quark combinations may form bound states, providing theoretical basis for the formation of fully heavy systems.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
H. Mutuk, K. Azizi
Summary: In this study, we investigate a hypothetical A0A0 dibaryon state using the QCD sum rule method. By constructing a scalar interpolating current and considering contributions of various quark, gluon, and mixed vacuum condensates, we extract the mass and decay constant of this state. The predicted values for the mass and decay constant are 2326+114???126 MeV and 2.94+0.30, giving an estimation about the binding energy and size of the A0A0 dibaryon. The obtained mass value is below the A0A0 threshold, suggesting that it may be a good dibaryon candidate for experimental observation.
Article
Astronomy & Astrophysics
Bing-Dong Wan, Sheng-Qi Zhang, Cong-Feng Qiao
Summary: This article evaluates the light baryonium spectrum in the framework of QCD sum rules and identifies the possible baryonium states. It provides numerical results for their masses and analyzes the potential decay modes that can be measured in experiments.
Article
Astronomy & Astrophysics
Jung Keun Ahn, Seung-il Nam
Summary: In this study, the production of S = -2 from Lambda p -> K+X reactions was investigated within the effective Lagrangian approach. The lightest S = -2 system, H-dibaryon, was found through Lambda p -> K+Lambda Lambda and Lambda p -> K+Xi(-)p reactions, with total cross sections of a few mu b in the Lambda beam momentum range up to 5 GeV/c. Additionally, the interference patterns between the H-dibaryon and nonresonant contributions were demonstrated.
Article
Astronomy & Astrophysics
R. Yaron, B. Bazak, M. Schafer, N. Barnea
Summary: Lattice quantum chromodynamics calculations provide a new approach for ab initio predictions in nuclear physics, by extrapolating finite-volume results to free-space physical quantities. We investigated the effect of periodic boundary conditions on the binding energy of light nuclei using the stochastic variational method, and examined the limitations of the Luscher formula for different nuclear systems.
Article
Physics, Multidisciplinary
T. Nanamura, K. Miwa, Y. Akazawa, R. Honda, Y. Nakada, T. Sakao
Summary: The J-PARC E40 experiment aims to measure cross sections of Sigma p scatterings, verify characteristics of Sigma(+) p interaction, and conduct systematic study. The experiment was conducted in June 2020 at J-PARC, generating Sigma(+) particles through a specific reaction and measuring with detector systems.
Article
Physics, Nuclear
Xiao-Hui Chen, Qi-Nan Wang, Wei Chen, Hua-Xing Chen
Summary: The study indicates the existence of exotic ΩΩ dibaryon states in a molecular picture with masses below the 2m(Ω) threshold. They may potentially be identified in heavy-ion collision processes.
Article
Astronomy & Astrophysics
Tyler D. Blanton, Stephen R. Sharpe
Summary: This paper discusses the scattering amplitudes of three-particle systems consisting of two identical particles and a different particle, deriving the formalism needed to extract these amplitudes. By using a relativistic formalism and diagrammatic analysis, the spectrum and scattering amplitudes of such systems are studied.
Article
Astronomy & Astrophysics
Zachary T. Draper, Stephen R. Sharpe
Summary: This study investigates pion-pion scattering in partially-quenched twisted-mass lattice QCD, revealing issues related to discretization errors and violation of unitarity. It proposes a systematic solution for reducing discretization errors by calculating the I = 2 scattering amplitude, while indicating that the error from the violation of unitarity is challenging to minimize in practice.
Article
Astronomy & Astrophysics
Szabolcs Borsanyi, Denes Sexty
Summary: The study utilizes the Density of States (DoS) method to simulate the topological susceptibility at high temperatures, revealing findings perfectly consistent with a free instanton gas.
Article
Physics, Nuclear
Kazuyuki Ogata, Tokuro Fukui, Yuki Kamiya, Akira Ohnishi
Summary: The study investigates the breakup effect of deuterons in the deuteron-Xi(-) correlation function and finds that the deuterons' breakup effect has a noticeable but not very significant impact on Cd Xi-. Low-lying neutron-neutron continuum states are responsible for this effect.
Article
Astronomy & Astrophysics
Chien-Yeah Seng, Vincenzo Cirigliano, Xu Feng, Mikhail Gorchtein, Luchang Jin, Gerald A. Miller
Summary: Recent estimates suggest that the strong isospin-symmetry breaking (ISB) corrections to the Fermi matrix element in free neutron decay may be one order of magnitude larger than the naive estimate based on a theorem. To investigate this claim, we derive a general expression for the leading ISB correction to hadronic Fermi matrix elements, which can be computed from first principles. Our formalism opens up the possibility of determining this correction in the neutron sector with fully-controlled theory uncertainties.
Article
Physics, Multidisciplinary
Jeremy R. Green, Andrew D. Hanlon, Parikshit M. Junnarkar, Hartmut Wittig
Summary: This study presents the first exploration of baryon-baryon interactions in the continuum limit of lattice QCD, revealing unexpectedly large lattice artifacts impacting the binding energy. By applying variational methods and Luscher's finite-volume quantization conditions, scattering phase shifts can be determined from the spectrum, leading to an estimate of the binding energy of the H dibaryon in three-flavor QCD.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
E. Hiyama, K. Sasaki, T. Miyamoto, T. Doi, T. Hatsuda, Y. Yamamoto, Th A. Rijken
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Nuclear
Faisal Etminan, Mohammad Mehdi Firoozabadi
Article
Physics, Nuclear
Aaron Park, Su Houng Lee, Takashi Inoue, Tetsuo Hatsuda
EUROPEAN PHYSICAL JOURNAL A
(2020)
Article
Multidisciplinary Sciences
Hirotaka Irie, Haozhao Liang, Takumi Doi, Shinya Gongyo, Tetsuo Hatsuda
Summary: A novel quantum-classical hybrid scheme is proposed to efficiently tackle large-scale combinatorial optimization problems by introducing Hamiltonian dynamics of classical flux variables associated with quantum spins. Classical flux molecular dynamics can effectively sort out frozen and ambivalent spins for quantum annealers, demonstrating superior performance compared to standard classical algorithms like tabu search and simulated annealing in MAX-CUT and Ising spin-glass problems.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Multidisciplinary
Akira Ohnishi, Y. Kamiya, K. Sasaki, T. Fukui, T. Hatsuda, T. Hyodo, K. Morita, K. Ogata
Summary: The study utilized the baryon-baryon potentials obtained from lattice QCD calculations to analyze the momentum correlation functions of p Xi(-) and Lambda Lambda pairs in high-energy nuclear collisions. The results accurately represented the correlation function data from pp and pPb collisions, confirming the validity of the S = -2 baryon-baryon potentials and providing support for the existence of the H dibaryon as a virtual state near the N Xi threshold.
Article
Physics, Multidisciplinary
Yan Lyu, Hui Tong, Takuya Sugiura, Sinya Aoki, Takumi Doi, Tetsuo Hatsuda, Jie Meng, Takaya Miyamoto
Summary: A pair of triply charmed baryons, Omega(ccc)Omega(ccc), is studied as an ideal dibaryon system, revealing that they are located in the unitary regime with short scattering length and small effective range.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
Toru Kojo, Gordon Baym, Tetsuo Hatsuda
Summary: The recent NICER measurement of the radius of the neutron star PSR J0740+6620 shows that the equation of state of neutron star matter has key features. In the regime of baryon density 2-4 times nuclear saturation density, the pressure rises rapidly, indicating the possible transformation of hadronic matter into quark matter. The resulting equation of state, QHC21, predicts larger radii in substantial agreement with the NICER data.
ASTROPHYSICAL JOURNAL
(2022)
Article
Physics, Multidisciplinary
Yong-Jia Huang, Luca Baiotti, Toru Kojo, Kentaro Takami, Hajime Sotani, Hajime Togashi, Tetsuo Hatsuda, Shigehiro Nagataki, Yi-Zhong Fan
Summary: This study investigates fully general-relativistic binary-neutron-star merger simulations with quark-hadron crossover equations of state for the first time and analyzes the characteristic differences in the gravitational wave signals. The results are important for discriminating between different types of quark dynamics and future kilohertz gravitational wave observations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Yixin Guo, Hiroyuki Tajima, Tetsuo Hatsuda, Haozhao Liang
Summary: This paper theoretically examines the continuity between atomic and molecular Fermi superfluids in a Bose-Fermi mixture near the Feshbach resonance. A mean-field framework is constructed based on the perturbative expansion of the b-f-F Feshbach coupling in a two-channel model. The resulting effective Hamiltonian exhibits a continuity between atom-atom to molecule-molecule Cooper pairings and becomes equivalent to the two-band-superconductor model with a pair-exchange coupling.
Article
Medicine, General & Internal
Kenji Sasaki, Yoichi Ikeda, Takashi Nakano
Summary: Behavioral restrictions have been implemented globally to control the spread of COVID-19. This study compares the situation in Shanghai, where a lockdown was implemented, with Taiwan, where the spread has been well controlled. The results show that while the restrictions were effective in reducing infections, the daily reported cases followed a specific pattern.
Article
Astronomy & Astrophysics
Yan Lyu, Hui Tong, Takuya Sugiura, Sinya Aoki, Takumi Doi, Tetsuo Hatsuda, Jie Meng, Takaya Miyamoto
Summary: Optimized interpolating operators are constructed using the HAL QCD method, which are dominantly coupled to each eigenstate of two baryons. The validity of these operators is tested by considering heavy dibaryons??3Q??3Q (Q = s, c) calculated by (2 + 1)-flavor lattice QCD simulations. The results show that the optimized operators provide effective energies of the ground and excited states and can reliably extract the potential V(r).
Article
Physics, Nuclear
Y. Kamiya, K. Sasaki, T. Fukui, T. Hyodo, K. Morita, K. Ogata, A. Ohnishi, T. Hatsuda
Summary: Investigation of momentum correlation functions of S = -2 baryon pairs in high-energy collisions shows that the NΞ (ΛΛ) interaction is moderately (weakly) attractive, without forming a quasi-bound (bound) state.
Article
Astronomy & Astrophysics
Ryosuke Yanagihara, Masakiyo Kitazawa, Masayuki Asakawa, Tetsuo Hatsuda
Article
Physics, Nuclear
Kenji Sasaki, Sinya Aoki, Takumi Doi, Shinya Gongyo, Tetsuo Hatsuda, Yoichi Ikeda, Takashi Inoue, Takumi Iritani, Noriyoshi Ishii, Keiko Murano, Takaya Miyamoto
Article
Physics, Nuclear
Kenji Morita, Shinya Gongyo, Tetsuo Hatsuda, Tetsuo Hyodo, Yuki Kamiya, Akira Ohnishi
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.
