Article
Astronomy & Astrophysics
Oleksandra Deineka, Igor Danilkin, Marc Vanderhaeghen
Summary: In this paper, a data-driven analysis of the gamma gamma -> D+D- and gamma gamma -> D-0(D) over bar (0) reactions is presented. The S-wave contribution is solved using a partial-wave dispersive representation and the N/D ansatz. The left-hand cuts are accounted for using a model-independent conformal expansion. The D-wave chi_c2(3930) state is described as a Breit-Wigner resonance. The resulting fits are consistent with experimental data, and no evidence of the broad resonance X(3860) reported by the Belle Collaboration is found. Instead, a bound state below the D (D) over bar threshold at root s(B) = 3695(4) MeV is confirmed.
Article
Chemistry, Multidisciplinary
Noel Angel Espinosa-Jalapa, Florian Pielnhofer, Marc Schlosser, Michael Seidl, Jonathan O. O. Bauer
Summary: Three polymorphs of dibenzyldiphenylsilane were discovered and their intermolecular interaction patterns were investigated using Hirshfeld surface analysis and 2D fingerprint plots. The contribution of dispersion interactions to the stability of the polymorphic crystal structures was analyzed using density functional theory (DFT) calculations. Studying weak intermolecular interactions is essential for understanding crystalline polymorphism and structure formation principles.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Astronomy & Astrophysics
Olivier Perdereau, Reza Ansari, Albert Stebbins, Peter T. Timbie, Xuelei Chen, Fengquan Wu, Jixia Li, John P. Marriner, Gregory S. Tucker, Yanping Cong, Santanu Das, Yichao Li, Yingfeng Liu, Christophe Magneville, Jeffrey B. Peterson, Anh Phan, Lily Robinthal, Shijie Sun, Yougang Wang, Yanlin Wu, Yidong Xu, Kaifeng Yu, Zijie Yu, Jiao Zhang, Juyong Zhang, Shifan Zuo
Summary: This article presents the scientific case for surveys conducted with the Tianlai dish array interferometer in the [1300, 1400] MHz frequency range. The article discusses the methodology, sensitivity, and detection capabilities of the surveys, as well as the impact of instrumental imperfections.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Physics, Multidisciplinary
W. Gonzalez, M. Gomez-Bock, L. Lopez-Lozano, S. Rosado-Navarro, A. Rosado
Summary: This study focuses on Z-production in deep inelastic scattering using the parton model within the Standard Model at leading order. The momentum transfer square Qtilde^2 is shown to be ambiguous in the context of boson production, depending on the mechanism involved. The estimated total cross-section as a function of the ep system energy root s and different assignments of Qtilde^2 are presented for a range of 300 <= root s <= 1300 GeV.
PRAMANA-JOURNAL OF PHYSICS
(2021)
Article
Astronomy & Astrophysics
Pan-Pan Shi, Zhen-Hua Zhang, Feng-Kun Guo, Zhi Yang
Summary: In this study, the properties and production of the ground-state D+D- hadronic atom A(D+D-), called dionium, are investigated. The mass, binding energy, and decay width of the dionium are predicted using nonrelativistic effective field theory. The estimated cross-sections for the prompt and direct production of the dionium provide valuable information on charmed meson interaction and understanding charmoniumlike states.
Article
Astronomy & Astrophysics
Rhythm Shimakawa, Yuichi Higuchi, Masato Shirasaki, Masayuki Tanaka, Yen-Ting Lin, Masao Hayashi, Rieko Momose, Chien-Hsiu Lee, Haruka Kusakabe, Tadayuki Kodama, Naoaki Yamamoto
Summary: Utilizing the Subaru Strategic Program with the Hyper-Suprime Cam, initial results have been reported on the exploration and research of expansive over- and underdense structures, identifying potential massive regions at z = 0.3-1. Subsequent extensive spectroscopic surveys are expected to further investigate these colossal structures in 3D space.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Physics, Nuclear
W. Liu, J. L. Lou, Y. L. Ye, Z. H. Li, Q. T. Li, H. Hua, X. F. Yang, J. Y. Xu, H. J. Ong, D. T. Tran, N. Aoi, E. Ideguchi, D. Y. Pang, C. X. Yuan, S. M. Wang, Y. Jiang, B. Yang, Y. Liu, J. G. Li, Z. Q. Chen, J. X. Han, S. W. Bai, G. Li, K. Ma, Z. W. Tan, H. Y. Zhu, B. L. Xia
Summary: Experimental results of H-1(B-13, d) B-12 transfer reaction to the low-lying states in B-12 are reported, with extracted optical potential parameters for entrance and exit channels. Spectroscopic factors associated with neutron transfer to known B-12 states were determined, showing s- and d-wave intruder strengths in B-13(g.s.) follow systematics for N = 8 neutron-rich isotones. Further theoretical interpretation is needed for the sudden change of intruder sd-wave intensity between B-13 and Be-12.
Article
Materials Science, Multidisciplinary
J. Lim, A. C. Hire, Y. Quan, J. Kim, L. Fanfarillo, S. R. Xie, R. S. Kumar, C. Park, R. J. Hemley, Y. K. Vohra, R. G. Hennig, P. J. Hirschfeld, G. R. Stewart, J. J. Hamlin
Summary: The study investigated the electrical resistivity and crystal structure changes of Be22Re compound under high pressure, revealing a gradual decrease in critical temperature T-c. Through density functional theory calculations and X-ray diffraction experiments, the influence of lattice stiffening on the decrease in T-c was elucidated.
Article
Astronomy & Astrophysics
En Wang, Hong-Shen Li, Wei-Hong Liang, Eulogio Oset
Summary: In this work, researchers investigated the reaction of gamma gamma -> D (D) over bar with consideration of final state interaction. By fitting the measured data, they found a good reproduction using an amplitude that produces a bound D (D) over bar state with isospin I = 0 near threshold. However, the error bands of the fits indicate that more precise data are needed for a more assertive conclusion.
Article
Chemistry, Multidisciplinary
Tianwei Ouyang, Jiaqing Guo, Haochen Shen, Manman Mu, Yongli Shen, Xiaohong Yin
Summary: The study involves designing a Z-scheme g-ZnO/2H-MoS2 heterostructure to spatially separate photogenerated carriers for enhancing CO2 photocatalytic reduction efficiency. The calculations show that the heterostructure effectively suppresses recombination of photogenerated electrons and holes, leading to improved reduction of CO2.
Article
Multidisciplinary Sciences
Lei Hu, Yue-Wen Fang, Feiyu Qin, Xun Cao, Xiaoxu Zhao, Yubo Luo, Durga Venkata Maheswar Repaka, Wenbo Luo, Ady Suwardi, Thomas Soldi, Umut Aydemir, Yizhong Huang, Zheng Liu, Kedar Hippalgaonkar, G. Jeffrey Snyder, Jianwei Xu, Qingyu Yan
Summary: The study found that lillianite materials based on Pb7Bi4Se13 exhibit superior thermoelectric performance, offering potential for improving energy efficiency and serving as promising candidates for highly efficient thermoelectric energy conversion.
NATURE COMMUNICATIONS
(2021)
Article
Engineering, Geological
Huafu Pei, Huaibo Song, Chao Zhou, Qing Yang, Da Xiao
Summary: This study investigates the long-term behavior of energy piles under cyclic thermomechanical loads. A cyclic t-z model is proposed to consider the interface strength evolution with the number of thermomechanical cycles. The model is validated with interface shear tests and in situ energy pile measurements, and the effects of model parameters on the long-term behavior of energy piles are evaluated.
CANADIAN GEOTECHNICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Alberto Saldana-Lopez, Daniel Schaerer, John Chisholm, Sophia R. Flury, Anne E. Jaskot, Gabor Worseck, Kirill Makan, Simon Gazagnes, Valentin Mauerhofer, Anne Verhamme, Ricardo O. Amorin, Harry C. Ferguson, Mauro Giavalisco, Andrea Grazian, Matthew J. Hayes, Timothy M. Heckman, Alaina Henry, Zhiyuan Ji, Rui Marques-Chaves, Stephan R. McCandliss, M. Sally Oey, Goran Ostlin, Laura Pentericci, Trinh X. Thuan, Maxime Trebitsch, Eros Vanzella, Xinfeng Xu
Summary: This study investigates the role of cold interstellar medium in the leakage of ionizing radiation and establishes empirical relations between absorption lines and galaxy properties. The LyC escape fraction shows significant variation and is correlated with various indicators.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Computer Science, Interdisciplinary Applications
P. R. Johnson, C. E. Sosolik
Summary: SAFARI is a classical molecular dynamics simulation designed for analyzing low and hyperthermal energy ion spectra in ion-surface scattering experiments. It reduces runtime and improves precision by optimizing for this specific energy range.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Optics
Wei-Qing Xu, Zi-Ru Ma, Yi-Geng Peng, Xiao-Jiao Du, Yuan-Chen Xu, Li-Han Wang, Bo Li, Hao-Ran Zhang, Bei-Yuan Zhang, Jian-Hui Zhu, Shu-Xing Wang, Yong Wu, Jian-Guo Wang, Lin-Fan Zhu
Summary: Understanding the role of inelastic electron scattering in water is crucial in various fields, but the lack of accurate excitation cross sections leads to uncertainty in modeling radiation damage. By comparing ICSs from high-energy electron scattering with existing experiments and theories, recommendations were provided for accurate modeling radiation effects and electron transport properties in aqueous systems.
Article
Thermodynamics
Yawen Zheng, Lin Gao, Song He
Summary: This paper introduces a thermodynamic analysis method with a new criterion to reveal the mechanism of energy consumption in a power system integrating CO2 capture. The study finds that both the separation process and the energy provision for CO2 separation contribute to the energy penalty. Improving separation efficiency and shifting to an external energy source can help reduce energy consumption.
Article
Physics, Multidisciplinary
Song He, Yun-Ze Li
Summary: This article proposes a method for TT deformation in curved Riemann surfaces and constructs correlation functions of conformal field theories on genus two Riemann surfaces using the perturbative CFT approach. Through sewing construction and conformal symmetry, the first-order TT correction to the genus two correlation functions in the TT-deformed CFTs, such as partition function and one/higher-point correlation functions, is obtained systematically.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2023)
Article
Physics, Particles & Fields
Song He, Yu-tin Huang, Chia-Kai Kuo, Zhenjie Li
Summary: In this paper, we derive the two-loop correction to scattering amplitudes in the three-dimensional N = 6 Chern-Simons matter theory. We focus on the eight-point case, but our method can be applied to any multiplicity. The integrand of the amplitudes is completely determined by dual conformal symmetry, maximal cuts, constraints from soft-collinear behavior, and the vanishing of odd-multiplicity amplitudes. After evaluating the integrals with Higgs regularization, we find that the infrared divergence is the same as that of the N = 4 super Yang-Mills theory. The finite part of the amplitudes is dual conformal invariant, has a uniform transcendentality weight of two, and exhibits a nice analytic structure.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Jin Dong, Song He, Guanda Lin
Summary: We find that tree-level form factors with length-two operators in Yang-Mills-scalar (YMS) theory exhibit structures similar to scattering amplitudes of gluons and scalars, leading to new relations between them. These form factors can be decomposed into a linear combination of form factors with different operators and external scalars, and any n-point form factor with a specific operator can be expanded into (n+1)-point YMS amplitudes with an additional off-shell scalar leg. In addition to revealing hidden structures, these results provide an efficient algorithm for computing all-multiplicity length-two form factors in any dimension.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Yan-Qing Zhao, Song He, Defu Hou, Li Li, Zhibin Li
Summary: We study the rotation effects of hot and dense QCD matter using the gauge/gravity duality. By introducing angular velocity, we investigate the thermodynamic quantities for the rotating system and observe that the critical temperature and baryon chemical potential decrease with increasing angular velocity. We construct a 3-dimensional phase diagram of the QCD matter in terms of temperature, baryon chemical potential, and angular velocity, and also consider the gravitational model of the SU(3) pure gluon system with rotation.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Qu Cao, Song He, Yichao Tang
Summary: In this note, the maximal-codimension residues of four-dimensional L-loop traintrack integrals with massive legs are revisited in both Feynman parameter space and momentum space. It is found that half traintracks represent the most general degenerations of traintracks with conventional leading singularities, while the integrals themselves still exhibit rigidity due to lower-loop full traintrack subtopologies. Closed-form expressions for the leading singularities are derived both through residues in Feynman parameters and using the Schubert problems in momentum twistor space. The implications for the symbology of these traintrack integrals are briefly discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Alex Edison, Song He, Henrik Johansson, Oliver Schlotterer, Fei Teng, Yong Zhang
Summary: We make progress in computing D-dimensional one-loop amplitudes in general gauge theories, maintaining the principles of unitarity and the color-kinematics duality. We obtain simple expressions for maximal cuts of kinematic numerators of n-gon diagrams for n-point amplitudes involving either supersymmetry multiplets or generic non-supersymmetric matter in the loop. We solve the long-standing problem of realizing color-kinematics duality, manifest locality, optimal power counting of loop momenta, quadratic Feynman propagators, compatibility with double copy and graph symmetries for n=6, 7 points with maximal supersymmetry and n=4, 5 points in the half-maximally supersymmetric case.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Mathematical
Song He, Yihong Wang, Yong Zhang, Peng Zhao
Summary: In this paper, we continue to explore the various forms of cluster algebras in scattering amplitudes and related topics in physics. We generalize the familiar moduli space M0,n to finite-type cluster algebras by studying cluster configuration spaces. We derive worldsheet-like variables from Y-systems and use them to express dihedral coordinates and write cluster string integrals in compact forms. We focus on the Dn type and show how to reach the boundaries of the configuration space and write saddle-point equations using these variables. Furthermore, we propose conjectures about quasi-polynomial point count, dimensions of cohomology, and the number of saddle points for the Dn space up to n = 10, significantly extending previous results.
SYMMETRY INTEGRABILITY AND GEOMETRY-METHODS AND APPLICATIONS
(2023)
Article
Physics, Particles & Fields
Song He, Chia-Kai Kuo, Zhenjie Li, Yao-Qi Zhang
Summary: In this study, we extensively investigate a recently proposed new positive geometry, which is conjectured to be the four-point amplituhedron for ABJM theory. We examine generalized unitarity cuts from this geometry, and demonstrate that (1) the four-point integrand satisfies perturbative unitarity (or optical theorem) at all loops, a result that directly follows from the geometry, and (2) vanishing cuts involving odd-point amplitudes arise from the bipartite nature of the associated negative geometries, providing justification for their presence in ABJM theory. Additionally, we make progress in integrating the forms of these negative geometries and obtain an infrared-finite quantity up to two loops, allowing us to extract the cusp anomalous dimension at leading order.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Song He, Pujian Mao, Xin-Cheng Mao
Summary: In this paper, a deformed soft graviton theorem in terms of celestial holography is derived, which shows that a two-dimensional irrelevant deformation can be applied to a four-dimensional theory at the amplitude level.
Article
Astronomy & Astrophysics
Yupeng Yang, Xiujuan Li, Gang Li
Summary: Astronomical measurements have strongly constrained the matter power spectrum at large scales, but only weakly at small scales. Deviation of the matter power spectrum at small scales can affect the formation of cosmological structures and the density of dark matter halos. Changes in the thermal history of the intergalactic medium (IGM) due to the annihilation of weakly interacting massive particles can leave imprints on relevant astronomical observations. By considering the impact of the deviation of the matter power spectrum at small scales on the global 21-cm signal, we explore the allowed parameter space of ms using the measured differential brightness temperature of the global 21-cm signal from the EDGES experiment at redshift z = 17.
Article
Astronomy & Astrophysics
Zhao-Sai Jia, Mao-Jun Yan, Zhen-Hua Zhang, Pan-Pan Shi, Gang Li, Feng-Kun Guo
Summary: Based on the hypothesis that the Tcc discovered at LHCb is a D0=D0 hadronic molecule, we studied the partial width of its heavy quark spin partner, the Tcc, as a D⠂0D⠂0 shallow bound state. We considered the contributions of the D⠂D and D⠂pi final state interactions and found that the rescattering corrections can significantly affect the decay widths. The total width of the Tcc was predicted to be about 41 keV.
Article
Physics, Particles & Fields
Yupeng Yang, Xiujuan Li, Gang Li
Summary: We derive the upper limit on the dark matter fraction in primordial black holes in mixed dark matter scenarios. Our study provides a different way of constraining the cosmological abundance of primordial black holes.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Particles & Fields
Song He, Hao Ouyang, Yuan Sun
Summary: In this work, we calculate the partition functions of N = 1 type 0A and 0B JT supergravity (SJT) on 2D surfaces of arbitrary genus with multiple finite cut-off boundaries, based on the T (T) over bar deformed super-Schwarzian theories. We compute the corresponding correlation functions in the T (T) over bar deformed matrix model side using topological recursion relations and the transformation properties of topological recursion relations under T (T) over bar deformation. We verify the matching of partition functions of finite cut-off 0A and 0B SJT on generic 2D surfaces with associated correlation functions in T (T) over bar deformed matrix models.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Zhibin Li, Jingmin Liang, Song He, Li Li
Summary: Baryon number fluctuations can be used to explore the QCD phase diagram experimentally, and may provide insights into the critical endpoint (CEP). We used a holographic QCD model to compute higher-order baryon number susceptibilities and found that the model agrees well with experimental data, suggesting that it can be used to locate the CEP.
