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14 pages, 3773 KB

Open AccessArticle

Design and Construction of a Variable-Angle Three-Beam Stimulated Resonant Photon Collider toward eV-Scale ALP Search

by Takumi Hasada, Kensuke Homma and Yuri Kirita

Universe 2023, 9(8), 355; https://doi.org/10.3390/universe9080355 - 29 Jul 2023

Cited by 2 | Viewed by 1327

We aim to search for axion-like particles in the eV mass range using a variable-angle stimulated resonance photon collider (SRPC) with three intense laser beams. By changing angle of incidence of the three beams, the center-of-mass-system collision energy can be varied and the eV mass range can be continuously searched for. In this paper, we present the design and construction of such a variable-angle three-beam SRPC (

^{t} SRPC

), the verification of the variable-angle mechanism using a calibration laser, and realistic sensitivity projections for searches in the near future. Full article

(This article belongs to the Special Issue Origins and Natures of Inflation, Dark Matter and Dark Energy)

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16 pages, 2017 KB

Open AccessArticle

Pilot Search for Axion-Like Particles by a Three-Beam Stimulated Resonant Photon Collider with Short Pulse Lasers

by Fumiya Ishibashi, Takumi Hasada, Kensuke Homma, Yuri Kirita, Tsuneto Kanai, ShinIchiro Masuno, Shigeki Tokita and Masaki Hashida

Universe 2023, 9(3), 123; https://doi.org/10.3390/universe9030123 - 28 Feb 2023

Cited by 6 | Viewed by 1900

Abstract

Toward the systematic search for axion-like particles in the eV mass range, we proposed the concept of a stimulated resonant photon collider by focusing three short pulse lasers into a vacuum. In order to realize such a collider, we have performed a proof-of-principle experiment with a set of large incident angles between three beams to overcome the expected difficulty to ensure the space–time overlap between short pulse lasers and also established a method to evaluate the bias on the polarization states, which is useful for a future variable–incident–angle collision system. In this paper, we present a result from the pilot search with the developed system and the method. The search result was consistent with null. We thus have set the upper limit on the minimum ALP-photon coupling down to

1.5 \times 10^{- 4}

GeV

^{- 1}

at the ALP mass of 1.53 eV with a confidence level of 95%. Full article

(This article belongs to the Special Issue Origins and Natures of Inflation, Dark Matter and Dark Energy)

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12 pages, 1755 KB

Open AccessArticle

Sensitivity to Axion-like Particles with a Three-Beam Stimulated Resonant Photon Collider around the eV Mass Range

by Kensuke Homma, Fumiya Ishibashi, Yuri Kirita and Takumi Hasada

Universe 2023, 9(1), 20; https://doi.org/10.3390/universe9010020 - 29 Dec 2022

Cited by 6 | Viewed by 1937

Abstract

We propose a three-beam stimulated resonant photon collider with focused laser fields in order to directly produce an axion-like particle (ALP) with the two beams and to stimulate its decay by the remaining one. The expected sensitivity around the eV mass range has [...] Read more.

O (10^{- 14})

GeV⁻¹ with 1 J class short-pulsed lasers. Full article

(This article belongs to the Special Issue Origins and Natures of Inflation, Dark Matter and Dark Energy)

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18 pages, 1306 KB

Open AccessArticle

Perspective of Direct Search for Dark Components in the Universe with Multi-Wavelengths Stimulated Resonant Photon-Photon Colliders

by Kensuke Homma, Yuri Kirita and Fumiya Ishibashi

Universe 2021, 7(12), 479; https://doi.org/10.3390/universe7120479 - 6 Dec 2021

Cited by 4 | Viewed by 2496

Abstract

We explore a possibility to detect dark components in the Universe via stimulated photon–photon collisions by focusing two-frequency coherent electromagnetic fields in a vacuum. Those fields are assumed to be pulsed reaching Fourier transform limits in near-infrared, THz, and GHz frequency bands, respectively. The numbers of signal photons as a result of exchange of a pseudoscalar-type pseudo Nambu–Goldstone boson have been evaluated in the individual frequency bands. Within presently available beam intensities, we found that the QCD axion scenarios are thoroughly testable in the mass range

10^{- 6}

–

10^{0}

eV based on the common method. Furthermore, we show a possibility to reach the weak coupling domain even beyond the gravitationally weak coupling strength if pulse compression in the GHz band is realized in the near future development. Full article

(This article belongs to the Special Issue Frontiers in Astroparticle Physics and Particle Cosmology)

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13 pages, 3655 KB

Open AccessCommunication

Resonant Ultrarelativistic Electron–Positron Pair Production by High-Energy Electrons in the Field of an X-ray Pulsar

by Georgii K. Sizykh, Sergei P. Roshchupkin and Victor V. Dubov

Universe 2020, 6(9), 132; https://doi.org/10.3390/universe6090132 - 22 Aug 2020

Cited by 5 | Viewed by 2622

Abstract

The process of resonant high-energy electron–positron pair production by an ultrarelativistic electron colliding with the field of an X-ray pulsar is theoretically investigated. Resonant kinematics of the process is studied in detail. Under the resonance condition, the intermediate virtual photon in the X-ray pulsar field becomes a real particle. As a result, the initial process of the second order in the fine structure constant effectively reduces into two successive processes of the first order: X-ray-stimulated Compton effect and X-ray-stimulated Breit–Wheeler process. For a high-energy initial electron all the final ultrarelativistic particles propagate in a narrow cone along the direction of the initial electron momentum. The presence of threshold energy for the initial electron which is of order of 100 MeV for 1-KeV-frequency field is shown. At the same time, the energy spectrum of the final particles (two electrons and a positron) highly depends on their exit angles and on the initial electron energy. This result significantly distinguishes the resonant process from the non-resonant one. It is shown that the resonant differential probability significantly exceeds the non-resonant one. Full article

(This article belongs to the Special Issue Selected Papers from the 17th Russian Gravitational Conference —International Conference on Gravitation, Cosmology and Astrophysics (RUSGRAV-17))

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