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学者姓名：王雯宇
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Abstract ：
We examine the Sommerfeld enhancement effect for the puffy self-interacting dark matter. We find out two new parameters to classify the self-scattering cross section into the Born, the resonance and the classical regimes for the puffy dark matter. Then we observe that the resonance peaks for the puffy dark matter self-scattering and for the Sommerfeld enhancement effect have the same locations. Further, we find that for a large ratio between R chi (radius of a puffy dark matter particle) and 1/m phi (force range), the Sommerfeld enhancement factor approaches to 1 (no enhancement). Finally, for the puffy SIDM scenario to solve the small-scale problems, the values of the Sommerfeld enhancement factor are displayed in the allowed parameter regions.
Keyword ：
Particle Nature of Dark Matter Particle Nature of Dark Matter Cosmology of Theories BSM Cosmology of Theories BSM
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| GB/T 7714 | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min et al. Sommerfeld enhancement for puffy self-interacting dark matter [J]. | JOURNAL OF HIGH ENERGY PHYSICS , 2024 , (1) . |
| MLA | Wang, Wenyu et al. "Sommerfeld enhancement for puffy self-interacting dark matter" . | JOURNAL OF HIGH ENERGY PHYSICS 1 (2024) . |
| APA | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min , Zhu, Bin , Zhu, Rui . Sommerfeld enhancement for puffy self-interacting dark matter . | JOURNAL OF HIGH ENERGY PHYSICS , 2024 , (1) . |
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Abstract ：
A dark scalar mediator can easily realize the self-interacting dark matter scenario and satisfy the constraint of the relic density of the dark matter. When the hidden sector is highly decoupled from the visible sector, the constraints from direct and indirect detections of dark matter are rather relaxed. The gravitational waves produced by the first-order phase transition resulted from this dark scalar mediator will be an important signature to probe such a dark sector. In this work, a generic quartic finite-temperature potential is used to induce a strong first-order phase transition. A joint analysis of the self-interacting dark matter, the relic density of the dark matter and the first-order phase transition show that the mass range of the dark scalar is about (4 X 10(-4) similar to 3) GeV. For the dark matter, when the temperature ratio xi between the hidden sector and the visible sector is larger than 0.1, its mass range is found to be (10 MeV-10 GeV). The produced gravitational waves are found to have a peak frequency of (10(-6)-10(-3)) Hz for a temperature ratio 0.1 < xi < 1, which may be detectable in future measurements.
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| GB/T 7714 | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min . A hidden self-interacting dark matter sector with first-order cosmological phase transition and gravitational wave [J]. | EUROPEAN PHYSICAL JOURNAL PLUS , 2023 , 138 (9) . |
| MLA | Wang, Wenyu et al. "A hidden self-interacting dark matter sector with first-order cosmological phase transition and gravitational wave" . | EUROPEAN PHYSICAL JOURNAL PLUS 138 . 9 (2023) . |
| APA | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min . A hidden self-interacting dark matter sector with first-order cosmological phase transition and gravitational wave . | EUROPEAN PHYSICAL JOURNAL PLUS , 2023 , 138 (9) . |
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Abstract ：
For the light relativistic dark matter (DM) boosted by high energy cosmic ray, its scattering cross section with the nucleon is sensitively dependent on the momentum-transfer and such an dependence is caused by the mediator in the scattering. For puffy DM particle with a size, the momentum-transfer dependence can also arise from the DM radius effect. All these momentum-transfer dependences should be considered. In this note we study the direct detection limits on the cosmic ray-boosted puffy DM for a simplified model with a light mediator. For comparison, we first re-derive the direct detection limits on the cosmic rayboosted point-like DM. We display the limits on various planes of parameters and find that the limits for the cosmic ray-boosted puffy DM are stronger than for the point-like DM. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
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| GB/T 7714 | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min et al. Direct detection of cosmic ray-boosted puffy dark matter [J]. | NUCLEAR PHYSICS B , 2023 , 995 . |
| MLA | Wang, Wenyu et al. "Direct detection of cosmic ray-boosted puffy dark matter" . | NUCLEAR PHYSICS B 995 (2023) . |
| APA | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min , Zhu, Rui . Direct detection of cosmic ray-boosted puffy dark matter . | NUCLEAR PHYSICS B , 2023 , 995 . |
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Abstract ：
In direct dark matter (DM) detection via scattering off the electrons, the momentum transfer plays a crucial role. Previous work showed that for self-interacting DM, if the DM particle has a size (the so-called puffy DM), the radius effect could dominate the momentum transfer and become another source of velocity dependence for self-scattering cross-section. In this work, we investigate the direct detection of puffy DM particles with different radii through electron recoil. We find that comparing with the available experimental exclusion limits dominated by the mediator effect for XENON10, XENON100 and XENON1T, the constraints on the puffy DM-electron scattering cross-section become much weaker for large radius DM particles. For small-radius DM particles, the constraints remain similar to the point-like DM case.
Keyword ：
spin-dependent scattering spin-dependent scattering electron electron Dark matter Dark matter
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| GB/T 7714 | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min . Direct detection of finite-size dark matter via electron recoil [J]. | INTERNATIONAL JOURNAL OF MODERN PHYSICS A , 2023 , 38 (26N27) . |
| MLA | Wang, Wenyu et al. "Direct detection of finite-size dark matter via electron recoil" . | INTERNATIONAL JOURNAL OF MODERN PHYSICS A 38 . 26N27 (2023) . |
| APA | Wang, Wenyu , Xu, Wu-Long , Yang, Jin Min . Direct detection of finite-size dark matter via electron recoil . | INTERNATIONAL JOURNAL OF MODERN PHYSICS A , 2023 , 38 (26N27) . |
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Abstract ：
A novel detection of sub-GeV dark matter is proposed in the paper. The electron cloud is boosted by the dark matter and emits an electron when it is dragged back by the heavy nucleus, namely the coherent scattering of the electron cloud of the atom. The survey in the x-ray diffraction shows that the atomic form factors are much more complex than the naive consideration. The results of the relativistic Hartree-Fock (RHF) method give non-trivial shapes of the atoms. The detailed calculation of the recoil of the electron cloud, the kinetics, the fiducial cross section and the corresponding calculation of detection rate are given analytically. The numerical results show that the limits of the RHF form factors are much more stringent than the recoil of a single electron, almost 4 orders stronger, and also give tight limitations compared to the Migdal effect below about several hundred MeV. The physical picture and the corresponding results are promising and need further exploration.
Keyword ：
form factor form factor coherent scattering coherent scattering dark matter dark matter
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| GB/T 7714 | Guo, Ji-Heng , Sun, Yu-Xuan , Wang, Wenyu et al. Can sub-GeV dark matter coherently scatter on the electrons in the atom? [J]. | COMMUNICATIONS IN THEORETICAL PHYSICS , 2023 , 75 (1) . |
| MLA | Guo, Ji-Heng et al. "Can sub-GeV dark matter coherently scatter on the electrons in the atom?" . | COMMUNICATIONS IN THEORETICAL PHYSICS 75 . 1 (2023) . |
| APA | Guo, Ji-Heng , Sun, Yu-Xuan , Wang, Wenyu , Wu, Ke-Yun . Can sub-GeV dark matter coherently scatter on the electrons in the atom? . | COMMUNICATIONS IN THEORETICAL PHYSICS , 2023 , 75 (1) . |
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Abstract ：
Boosted dark matter is a promising method for probing light dark matter, with a well-developed computational framework for spin-independent scattering already existing. The spin-dependent case, on the other hand, lacks a coherent treatment. We therefore give the first comprehensive derivation of the spin -dependent scattering cross section for boosted dark matter, finding that certain effects can lead to enhanced experimental sensitivity compared to the conventional contact interaction. For example, when the transfer momentum is sufficiently large, the time component of the dark matter current contributes significantly to the proton structure factor. Also, even without a light mediator, we find a residual momentum dependence in the quark-nucleon matching operation that can contribute similarly. We promote this endeavor by deriving direct limits on sub-GeV spin-dependent scattering of boosted dark matter from terrestrial data. We find that the exclusion limits from the boosted structure factor differ by as much as six orders of magnitude from those calculated using nonrelativistic structure factors.
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| GB/T 7714 | Wang, Wenyu , Wu, Lei , Yang, Wen-Na et al. Spin-dependent scattering of boosted dark matter [J]. | PHYSICAL REVIEW D , 2023 , 107 (7) . |
| MLA | Wang, Wenyu et al. "Spin-dependent scattering of boosted dark matter" . | PHYSICAL REVIEW D 107 . 7 (2023) . |
| APA | Wang, Wenyu , Wu, Lei , Yang, Wen-Na , Zhu, Bin . Spin-dependent scattering of boosted dark matter . | PHYSICAL REVIEW D , 2023 , 107 (7) . |
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Abstract ：
We study the Standard Model and the new physics predictions for the lepton-flavour-universality violating (LFUV) ratios in various b ?& nbsp;sl(+)l(-& nbsp;)channels with scalar, pseudoscalar, vector, axial-vector, and A baryon final states, considering both unpolarized and polarized final state hadrons. In order to formulate physical observables, we use the model independent effective Hamiltonian approach and employ the helicity formalism. We provide the explicit expressions of the helicity amplitudes in terms of the Wilson coefficients and the hadronic form factors by using the same kinematical configuration and polarization conventions for all the decay channels. We perform the numerical analysis with new physics scenarios selected from the recent global fits to b ?& nbsp;sl(+)l(-& nbsp;)data, having specific new physics model interpretations. We find that some of the LFUV ratios for these complementary channels in different kinematical regions have high sensitivity to new physics and the future measurements of them in Belle II and LHCb experiments, along with testing new physics/LFUV, can help to distinguish among some of the different new physics possibilities. (C)& nbsp;2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).& nbsp;
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| GB/T 7714 | Bhutta, Faisal Munir , Huang, Zhuo-Ran , Lu, Cai-Dian et al. New physics in b ? s(ll) anomalies and its implications for the complementary neutral current decays [J]. | NUCLEAR PHYSICS B , 2022 , 979 . |
| MLA | Bhutta, Faisal Munir et al. "New physics in b ? s(ll) anomalies and its implications for the complementary neutral current decays" . | NUCLEAR PHYSICS B 979 (2022) . |
| APA | Bhutta, Faisal Munir , Huang, Zhuo-Ran , Lu, Cai-Dian , Paracha, M. Ali , Wang, Wenyu . New physics in b ? s(ll) anomalies and its implications for the complementary neutral current decays . | NUCLEAR PHYSICS B , 2022 , 979 . |
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Abstract ：
Motivated by the current strong constraints on the spin-independent dark matter (DM)-nucleus scattering, we investigate the spin-dependent (SD) interactions of the light Majorana DM with the nucleus mediated by an axial-vector boson. Due to the small nucleus recoil energy, the ionization signals have now been used to probe the light dark matter particles in direct detection experiments. With the existing ionization data, we derive the exclusion limits on the SD DM-nucleus scattering through Migdal effect in the MeV-GeV DM mass range. It is found that the lower limit of the DM mass can reach about several MeVs. Due to the momentum transfer correction induced by the light mediator, the bounds on the SD DM-nucleus scattering cross sections can be weakened in comparison with the heavy mediator. (C) 2022 The Author(s). Published by Elsevier B.V.
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| GB/T 7714 | Wang, Wenyu , Wu, Ke-Yun , Wu, Lei et al. Direct detection of spin-dependent sub-GeV dark matter via Migdal effect [J]. | NUCLEAR PHYSICS B , 2022 , 983 . |
| MLA | Wang, Wenyu et al. "Direct detection of spin-dependent sub-GeV dark matter via Migdal effect" . | NUCLEAR PHYSICS B 983 (2022) . |
| APA | Wang, Wenyu , Wu, Ke-Yun , Wu, Lei , Zhu, Bin . Direct detection of spin-dependent sub-GeV dark matter via Migdal effect . | NUCLEAR PHYSICS B , 2022 , 983 . |
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Abstract ：
The decay t -> cV (V = gamma, Z, g) processes in mirror twin Higgs models with colorless top partners are studied in this paper. We report that the branching ratios of these decays can strongly affect the standard model expectations in some parameter spaces and may be detectable according to the current precision electroweak measurements. Thus, constraints on the model parameters may be obtained from the branching fraction of the decay processes, which may serve as a robust detection tool for this new physics model.
Keyword ：
branching ratios branching ratios mirror twin Higgs models mirror twin Higgs models t -> cV t -> cV
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| GB/T 7714 | Bie, Su-Ya , Liu, Guo-Li , Wang, Wenyu . Top rare decays t -> cV in mirror twin Higgs models [J]. | CHINESE PHYSICS C , 2021 , 45 (1) . |
| MLA | Bie, Su-Ya et al. "Top rare decays t -> cV in mirror twin Higgs models" . | CHINESE PHYSICS C 45 . 1 (2021) . |
| APA | Bie, Su-Ya , Liu, Guo-Li , Wang, Wenyu . Top rare decays t -> cV in mirror twin Higgs models . | CHINESE PHYSICS C , 2021 , 45 (1) . |
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| GB/T 7714 | Wang, Wenyu , Wu, Lei , Yang, Jin Min et al. Cosmic ray boosted sub-GeV gravitationally interacting dark matter in direct detection (vol 12, 072, 2020) [J]. | JOURNAL OF HIGH ENERGY PHYSICS , 2021 , (2) . |
| MLA | Wang, Wenyu et al. "Cosmic ray boosted sub-GeV gravitationally interacting dark matter in direct detection (vol 12, 072, 2020)" . | JOURNAL OF HIGH ENERGY PHYSICS 2 (2021) . |
| APA | Wang, Wenyu , Wu, Lei , Yang, Jin Min , Zhou, Hang , Zhu, Bin . Cosmic ray boosted sub-GeV gravitationally interacting dark matter in direct detection (vol 12, 072, 2020) . | JOURNAL OF HIGH ENERGY PHYSICS , 2021 , (2) . |
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