Accelerator cavities as a probe of millicharged particles

Gies, Holger; Jaeckel, Joerg; Ringwald, Andreas

doi:10.1209/epl/i2006-10356-5

Cited by 55 publications

(73 citation statements)

References 52 publications

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“…Light-shining-through-wall or afterglow experiments are indicative for additional matter couplings. Further experiments have been suggested such as Schwinger-type MCP pair production [52] or hiddenphoton searches [53] which may also become realizable at ELI.…”

Section: Discussionmentioning

confidence: 99%

Strong laser fields as a probe for fundamental physics

Gies

2009

Eur. Phys. J. D

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Abstract. Upcoming high-intensity laser systems will be able to probe the quantum-induced nonlinear regime of electrodynamics. So far unobserved QED phenomena such as the discovery of a nonlinear response of the quantum vacuum to macroscopic electromagnetic fields can become accessible. In addition, such laser systems provide for a flexible tool for investigating fundamental physics. Primary goals consist in verifying so far unobserved QED phenomena. Moreover, strong-field experiments can search for new light but weakly interacting degrees of freedom and are thus complementary to accelerator-driven experiments. I review recent developments in this field, focusing on photon experiments in strong electromagnetic fields. The interaction of particle-physics candidates with photons and external fields can be parameterized by low-energy effective actions and typically predict characteristic optical signatures. I perform first estimates of the accessible new-physics parameter space of high-intensity laser facilities such as POLARIS and ELI.

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Section: Discussionmentioning

confidence: 99%

Strong laser fields as a probe for fundamental physics

Gies

2009

Eur. Phys. J. D

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“…standard model of particle physics [473], electromagnetic wave propagation in a plasma [269], as well in astrophysics [408]. In this section, following [73,474], the case of undercritical electric field is explored.…”

Section: Electro-fluidodynamics Of the Pair Plasmamentioning

confidence: 99%

Electron–positron pairs in physics and astrophysics: From heavy nuclei to black holes

Ruffini¹,

Vereshchagin²,

Xue³

2010

Physics Reports

483

305

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Due to the interaction of physics and astrophysics we are witnessing in these years a splendid synthesis of theoretical, experimental and observational results originating from three fundamental physical processes. They were originally proposed by Dirac, by Breit and Wheeler and by Sauter, Heisenberg, Euler and Schwinger. For almost seventy years they have all three been followed by a continued effort of experimental verification on Earth-based experiments. The Dirac process, e + e − → 2γ, has been by far the most successful. It has obtained extremely accurate experimental verification and has led as well to an enormous number of new physics in possibly one of the most fruitful experimental avenues by introduction of storage rings in Frascati and followed by the largest accelerators worldwide: DESY, SLAC etc. The Breit-Wheeler process, 2γ → e + e − , although conceptually simple, being the inverse process of the Dirac one, has been by far one of the most difficult to be verified experimentally. Only recently, through the technology based on free electron X-ray laser and its numerous applications in Earth-based experiments, some first indications of its possible verification have been reached. The vacuum polarization process in strong electromagnetic field, pioneered by Sauter, Heisenberg, Euler and Schwinger, introduced the concept of critical electric field E c = m 2 e c 3 /(e ). It has been searched without success for more than forty years by heavy-ion collisions in many of the leading particle accelerators worldwide.The novel situation today is that these same processes can be studied on a much more grandiose scale during the gravitational collapse leading to the formation of a black hole being observed in Gamma Ray Bursts (GRBs). This report is dedicated to the scientific race. The theoretical and experimental work developed in Earth-based laboratories is confronted with the theoretical interpretation of space-based observations of phenomena originating on cosmological scales. What has become clear in the last ten years is that all the three above mentioned processes, duly extended in the general relativistic framework, are necessary for the understanding of the physics of the gravitational collapse to a black hole. Vice versa, the natural arena where these processes can be observed in mutual interaction and on an unprecedented scale, is indeed the realm of relativistic astrophysics.We systematically analyze the conceptual developments which have followed the basic work of Dirac and Breit-Wheeler. We also recall how the seminal work of Born and Infeld inspired the work by Sauter, Heisenberg and Euler on effective Lagrangian leading to the estimate of the rate for the process of electron-positron production in 1 a constant electric field. In addition of reviewing the intuitive semi-classical treatment of quantum mechanical tunneling for describing the process of electron-positron production, we recall the calculations in Quantum Electro-Dynamics of the Schwinger rate and effective Lagrangian for cons...

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“…More recently, new experimental proposals aim to investigate the Schwinger pair production of MCP in the strong electric field of cavities used in particle accelerators [22]. These can potentially improve the upper bound up to < 10 −6 using present cavities at TESLA [22] and up to < O(10 −7 ) with near-future cavities, for MCP masses below 10 −3 eV [23].…”

Section: Introductionmentioning

confidence: 99%

Polarization observables for millicharged particles in photon collisions

et al. 2016

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Particles in a hidden sector can potentially acquire a small electric charge through their interaction with the Standard Model and can consequently be observed as millicharged particles. We systematically compute the production of millicharged scalar, fermion, and vector boson particles in collisions of polarized photons. The presented calculation is model independent and is based purely on the assumptions of electromagnetic gauge invariance and unitarity. Polarization observables are evaluated and analyzed for each spin case. We show that the photon polarization asymmetries are a useful tool for discriminating between the spins of the produced millicharged particles. Phenomenological implications for searches of millicharged particles in dedicated photon-photon collision experiments are also discussed.

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Accelerator cavities as a probe of millicharged particles

Cited by 55 publications

References 52 publications

Strong laser fields as a probe for fundamental physics

Strong laser fields as a probe for fundamental physics

Electron–positron pairs in physics and astrophysics: From heavy nuclei to black holes

Polarization observables for millicharged particles in photon collisions

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