The Physics of the Dark Photon

Fabbrichesi, Marco; Gabrielli, Emidio; Lanfranchi, G.

doi:10.1007/978-3-030-62519-1

Cited by 164 publications

(85 citation statements)

References 227 publications

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“…It seems that the single contribution from the dark photon can explain the observed muon anomalous magnetic moment. However, the required parameter space in the m γ − plane to explain the observed a μ has already been excluded by other experimental bounds [49] as we will discuss in detail below.…”

Section: The Individual Contribution Of Alp or Dark Photonmentioning

confidence: 99%

“…The current bounds [49,72] on the dark photon mass m γ and its kinetic mixing with photon has been summarized in Fig. 4.…”

Section: Parameter Spacementioning

confidence: 99%

“…The previous 3.7 σ discrepancy between the E821 measurement and the SM prediction has stimulated many novel ideas. An incomplete list includes lepton flavor violation [25], Z [26][27][28][29], neutral scalars [30][31][32][33], ALP [34], leptoquarks [35,36], supersymmetry [37][38][39][40][41][42][43][44], dark photon [45][46][47][48][49], and dark matter portals [50][51][52][53][54][55].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Probing the dark axion portal with muon anomalous magnetic moment

Pasquini

2021

Eur. Phys. J. C

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We propose a new scenario of using the dark axion portal at one-loop level to explain the recently observed muon anomalous magnetic moment by the Fermilab Muon g-2 experiment. Both axion/axion-like particle (ALP) and dark photon are involved in the same vertex with photon. Although ALP or dark photon alone cannot explain muon $$g-2$$ g - 2 , since the former provides only negative contribution while the latter has very much constrained parameter space, dark axion portal can save the situation and significantly extend the allowed parameter space. The observed muon anomalous magnetic moment provides a robust probe of the dark axion portal scenario.

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Section: The Individual Contribution Of Alp or Dark Photonmentioning

confidence: 99%

“…The current bounds [49,72] on the dark photon mass m γ and its kinetic mixing with photon has been summarized in Fig. 4.…”

Section: Parameter Spacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Probing the dark axion portal with muon anomalous magnetic moment

Pasquini

2021

Eur. Phys. J. C

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“…To identify the new physics of Dark Matter (DM), the Basic Research Needs for Dark Matter Small Project New Initiatives [1] recommended to "detect individual galactic dark matter particles below the proton mass through interactions with advanced, ultra-sensitive detector." The recommendation is driven by new theories, which include hidden-sector DM [2][3][4][5][6][7][8], asymmetric DM [9][10][11], freeze-in DM [12] and strong interacting DM [13,14]. These theories provide well-motivated DM candidates, which can have masses lighter than that of the traditional Weakly Interacting Massive Particles (WIMPs) [15] and are beyond the science reaches of most generation two experiments [16,17].…”

Section: Introductionmentioning

confidence: 99%

Light Dark Matter Detection with Hydrogen-rich Crystals and Low-Tc TES Detectors

Wang,

Chang,

Lisovenko

et al. 2022

Preprint

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Direct detection of nuclear scatterings of sub-GeV Dark Matter (DM) particles favors low-Z nuclei. Hydrogen nucleus, which has a single proton, provides the best kinematic match to a light dark matter particle. The characteristic nuclear recoil energy is boosted by a factor of a few tens from those for larger nuclei used in traditional Weakly Interacting Massive Particle (WIMP) searches. Furthermore, hydrogen is optimal not only for spin-independent nuclear scattering of a sub-GeV DM, but also for spin-dependent nuclear scatterings, where large parameter space remains unconstrained yet. In this paper, we first introduce hydrogen-rich crystals, which emit two classes of signals under kinetic excitations. One class of the signals is infrared photons, which are from optically active fundamental vibrational modes of molecules and at several characteristic wavelengths. Another is acoustic phonons, and optical phonons that decay into acoustic phonons. We then discuss the technical status and future researches of low-Tc Transition-Edge Sensor (TES) detectors, which measure single infrared photons and a small flux of acoustic phonons with desirable sensitivities. With theoretical modeling to select hydrogen-rich crystals for the optimized science reach, ultra-sensitive low-Tc TES detectors for readout, and experimental prototyping of a light DM detection scheme, a detection experiment can be built for measuring the large unexplored parameter space of light DM particles.

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“…In order to make VDM itself a candidate for dark matter, additional symmetries are often requested to maintain its stability [35,36]. A well-know invisible vector model is the dark photon [37]. A very light massive dark photon could be a dark matter candidate, while in other cases, dark photon appears as a mediator.…”

Section: Introductionmentioning

confidence: 99%

The light invisible boson in FCNC decays of B and $$B_c$$ mesons

Wang

Zhang

et al. 2021

Eur. Phys. J. C

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In this paper, we study the FCNC decay processes of B and $$B_c$$ B c meson, in which one invisible particle is emitted. Both the spin-0 and spin-1 cases are considered. The model-independent effective Lagrangian is introduced to describe the coupling between the light invisible boson and quarks. The constraints of the coupling coefficients are extracted by experimental upper limits of the missing energy in B meson decays. The bounds are used to predict the upper limits of branching fractions of corresponding $$B_c$$ B c decays, which are of the order of $$10^{-6}$$ 10 - 6 or $$10^{-5}$$ 10 - 5 when final meson is pseudoscalar or vector, respectively. The maximum branch ratios are achieved when $$m_\chi \approx 3.5$$ m χ ≈ 3.5 –4 GeV, where $$m_\chi $$ m χ is the mass of the invisible particle.

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The Physics of the Dark Photon

Cited by 164 publications

References 227 publications

Probing the dark axion portal with muon anomalous magnetic moment

Probing the dark axion portal with muon anomalous magnetic moment

Light Dark Matter Detection with Hydrogen-rich Crystals and Low-Tc TES Detectors

The light invisible boson in FCNC decays of B and $$B_c$$ mesons

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