Dark photon mass gev

Author: ilir

August undefined, 2024

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. WebIn section III, we discuss the production and decays of dark photon at e + e − colliders. In section IV, a detailed collider simulation with dark photon mass ranging from 20 GeV to …

Dark photon vortex formation and dynamics - Semantic Scholar

WebThe Circular Electron Positron Collider (CEPC) is a future Higgs factory proposed by the Chinese high energy physics community. It will operate at a center-of-mass energy of 240-250 GeV. The CEPC will accumulate an integrated luminosity of 5 ab(-1) over ten years of operation, producing one million Higgs bosons via the Higgsstrahlung and vector boson … WebThe dark photon can obtain a highly suppressed mixing-induced coupling to the electromagnetic current, providing a portal through which dark photons can interact with ordinary matter. This review focuses on A ′ scenarios that are potentially accessible to accelerator-based experiments. small office ideas for work+procedures

Search for a heavy dark photon at future $e^+e^-$ colliders

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. WebTo broaden the exploration of this predicted dark matter particle, a second search was carried out considering some heavy Higgs bosons with masses ranging from 400 GeV to 3 TeV, produced either in gluon-gluon Fusion (ggF) or in Vector-Boson-Fusion (VBF) modes. WebMay 7, 2024 · Dark Photon and Muon g-2 Inspired Inelastic Dark Matter Models at the High-Energy Intensity Frontier Phys Rev Lett. 2024 May 7;126 (18):181801. doi: … son of sicily

Title: Search for the dark photon in π 0 decays - osti.gov

WebIn a ﬁxed target experiment dark photons can be generated by bremsstrahlung of scattering protons, in analogy with the ordinary photon bremmstrahlung. Consider a protonbeamwithinitialmomentumandenergy P andE prespectively. LetE 0andp betheenergyandmomentumofthegenerateddarkphoton. WebJul 16, 2024 · For models of scalar and fermionic light thermal dark matter production via dark photon, we present the constrains on the dimensionless dark matter parameter as function of the DM mass at BESIII and future STCF, conventionally assuming the dark coupling constant and . son of sin strange bandWebPseudoscalars appear frequently in particle spectra. They can be light if they appear as pseudo-Goldstone bosons from some spontaneously broken global symmetries with the decay constant f. Since any global symmetry is broken at least by quantum gravitational effects, all pseudoscalars are massive. The mass scale of a pseudoscalar is determined … son of sinner jelly roll

"Web2 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 … " - Dark photon mass gev

Dark photon mass gev

Dark photon search in the mass range between 1.5 …

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 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 …

Did you know?

WebThe 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 . WebDec 2, 2024 · The Heavy Photon Search Group at SLAC is collaborating with physicists at Jefferson Lab, INFN, IN2P3, UNH and UCSC in an experiment aimed at discovering a hidden-sector photon (aka "dark" photon or "heavy" photon). Such a particle could have mass in the range 0.01 to 0.5 GeV, couple weakly to electrons, and decay to e + e -.

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. WebApr 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

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 …

WebEqually interesting parameter space, dark photons are a valid DM candidate! (Recall very light DM need to be produced non-thermally) I Possibilities for generating correct relic …

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 … son of silence mc virginiaWebDark 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 … small office interior design minecraftWebspace of the dark photon for masses below 10 GeV. By refitting the DIS data in this way, we place upper limits on the mixing parameter of the dark photon for masses up to 80 … small office furniture couchWebfa ≈1018 GeV. Our intent is to simply identify a part of parameter space where this model is self-consistent and achieves our desired goal. A broader analysis may reveal ... abundance, giving the dark photon a plasma mass in the early Universe. This plasma mass suppresses the cosmo-logical tachyonic instability, preserving axion dark matter. ... son of sisterWebMar 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) ... son of sicily pizzaWebMay 5, 2015 · Abstract. A sample of 1.69 × 10 7 fully reconstructed π 0 → γe + e – decay candidates collected by the NA48/2 experiment at CERN in 2003–2004 is analyzed to search for the dark photon (A') production in the π0→γA' decay followed by the prompt A' → e + e – decay. No signal is observed, and an exclusion region in the plane of the dark … small office fridge freezerWebApr 8, 2024 · In this study, we investigate axion-like particle (ALP), dark photon (DP), and chameleon dark energy (DE) models for a solution to the -boson mass excess. We find that the ALP and DP interpretations have been significantly narrowed down by global electroweak fits. small office mini fridge