Dark photon mass gev
WebDec 1, 2024 · Dark Matter 27. Dark Matter RevisedAugust2024byL.Baudis(ZurichU.)andS.Profumo(UCSantaCruz). ... the existence of DM is inferred directly using tracers of mass enclosed within a certain radius such as stellar velocity dispersion, rotation curves in axisymmetric systems, the virial theorem, ... DM/1 … WebNov 10, 2014 · The data analysis covered the A ′ mass range between 0. 2 and 10. 2 GeV / c 2. The presence of the dark photon would be indicated by the appearance of an unexpected peak in the total mass of its decay …
Dark photon mass gev
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WebDec 11, 2024 · New detection schemes will allow researchers to search for so-called sub-GeV dark matter, which can be up to one million times lighter than the mass of the proton. The new schemes rely on inelastic collisions between a dark matter particle and electrons or nuclei in various materials, such as semiconductors, scintillators, and superconductors. WebMay 7, 2024 · Abstract: We search for the dark photon cold dark matter (DP-CDM) using a cryogenic millimeter-wave receiver. DP-CDM weakly couples to electromagnetic fields …
WebNov 10, 2024 · In conclusion, we perform a search for a dark photon in the mass range between 1.5 and 3.4 GeV/c 2, where we do not observe a significant signal. We set … WebJul 22, 2024 · One hypothesis is that dark matter consists of particles that interact with each other and with visible matter through a new force carried by a particle called the dark …
WebApr 25, 2024 · In the previous study, it was assumed that the dark photon has a Stückelberg mass, or a mass generated by the Higgs mechanism with a sufficiently heavy Higgs boson. In this paper we consider a case in which the Higgs boson is not fully decoupled; the Higgs field changes its vacuum expectation value after inflation. WebDark photon limits Data, plots and code for constraints on axions, axion-like particles, and dark photons ... Tests of coulomb law/photon mass. Atomic spectroscopy: limit, reference; AFM limit, reference; ... They also …
WebDark photons are particles invoked in some extensions of the Standard Model which could account for at least part of the dark matter content of the Universe.
WebNov 1, 2024 · Dark photon search in the mass range between 1.5 and 3.4 GeV/c2 Full Record Cited by (9) Images (3) Related Research Abstract Using a data set of 2.93 fb -1 … birth control to stop period for vacationWebMar 1, 2024 · The measured relic abundance sets an upper limit on the spinless photon mass of 500 GeV, which decreases to almost 200 GeV if the Higgs boson is light. ... neutralino-like dark matter of a mass of about 130 GeV giving rise to a 130 GeV photon line; ii) an annihilation cross section of or larger than 10{sup −27} cm{sup 3} s{sup −1}; iii) ... daniels company bluefield wvWeb2 days ago · Center: Binned number of events in a Ge target with a kg-yr exposure, assuming a DM mass of GeV and a heavy mediator. ... Projected constraints on the dark matter interaction cross section in the dark photon mediator model from a few anisotropic crystal targets. Solid curves are the 95% C.L. constraints (3 events), and dashed curves … birth control ufWeb2 Direct detection of sub-GeV dark matter8 2.1 Scattering rate9 2.2 Interaction strength10 2.3 Kinematics11 2.4 Direct detection with bound systems13 3 Electron excitations15 3.1 Atomic systems17 3.2 Solid state systems20 4 Phonon excitations23 4.1 Introduction to phonons24 4.2 Dynamic structure factor28 4.3 Dark photon couplings31 References 34 daniels coffee and moreWebDark Photon is justified in the simple Higgs structure “SM Higgs doublet + Higgs singlet” (Higgs singlet to break U(1)’ and give a mass to Z’) Z-Z’ kinetic mixing part is cancelled by Z-Z’ mass mixing (which is “induced by kinetic mixing”) at … daniels concrete reddingWebThe mass range from 1.5 to 2.9 GeV is scanned for the dark photon candidate, and no significant signal is observed. The mass dependent upper limits at the 90% confidence level on the coupling strength parameter ϵ for a dark photon coupling with an ordinary photon vary between 1.6 ×10 -3 and 5.7 ×10 -3 . birth control types of pillsWebApr 1, 2024 · We derive a conservative lower-limit of the dark photon mass around 8.5 MeV from the current Planck data if the mixing between the dark photon and ordinary photon is larger than O (10 −9 ). We also find that the future CMB stage-IV experiments can probe up to 17 MeV dark photon. Download to read the full article text birth control tier chart