Detailed design of a resonantly enhanced axion-photon regeneration experiment

Mueller, G.; Sikivie, P.; Tanner, D. B.; Bibber, K. van

doi:10.1103/physrevd.80.072004

Cited by 51 publications

(46 citation statements)

References 35 publications

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“…Considering that with the available technology cavities with β ∼ 10 4 − 10 5 seem realistic, an improvement of the order of 10 2 in these couplings are feasible. The expected number of photons after the regeneration cavity of such an LSW experiment will be given by [61,70] where (in a symmetric setup) P γ→WISP = P WISP→γ is the probability of photon-ALP conversion, e.g. Eq.…”

Section: Refinements Of Lsw Experimentsmentioning

confidence: 99%

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Optimizing light-shining-through-a-wall experiments for axion and other weakly interacting slim particle searches

Arias

Jaeckel

Redondo³

et al. 2010

Phys. Rev. D

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One of the prime tools to search for new light bosons interacting very weakly with photons -prominent examples are axions, axion-like particles and extra "hidden" U(1) gauge bosons -are light-shining-through-a-wall (LSW) experiments. With the current generation of these experiments finishing data taking it is time to plan for the next and search for an optimal setup. The main challenges are clear: on the one hand we want to improve the sensitivity towards smaller couplings, on the other hand we also want to increase the mass range to which the experiments are sensitive. Our main example are axion(-like particle)s but we also discuss implications for other WISPs (weakly interacting slim particles) such as hidden U(1) gauge bosons. To improve the sensitivity for axions towards smaller couplings one can use multiple magnets to increase the length of the interaction region. However, naively the price to pay is that the mass range is limited to smaller masses. We discuss how one can optimize the arrangement of magnets (both in field direction as well as allowing for possible gaps in between) to ameliorate this problem. Moreover, future experiments will include resonant, high quality optical cavities in both the production and the regeneration region. To achieve the necessary high quality of the cavities we need to avoid too high diffraction losses. This leads to minimum requirements on the diameter of the laser beam and therefore on the aperture of the cavity. We investigate what can be achieved with currently available magnets and desirable features for future ones.

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Section: Refinements Of Lsw Experimentsmentioning

confidence: 99%

“…In previous literature [70] a value δ clip 0 /(δ 0 + δ 2 ) ∼ 1 was used, leading to a slightly less optimal setup (see the dashed line in Fig. 6 (right)).…”

Section: Diffractive Lossesmentioning

confidence: 99%

Optimizing light-shining-through-a-wall experiments for axion and other weakly interacting slim particle searches

Arias

Jaeckel

Redondo³

et al. 2010

Phys. Rev. D

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“…A finesse of 10 4 is routine, and 10 6 is possible. A large experiment based on optical cavities is GammeV Resonantly Enhanced Photon Regeneration (REAPR), proposed for US funding (11). A second large experiment, Any Light Particle Search II (ALPS II), has started construction at Deutsches Elektronen-Synchrotron (DESY).…”

Section: Example Search: Shining Light Through Walls and Other Laser mentioning

confidence: 99%

Dark-matter QCD-axion searches

Rosenberg

2015

Proc. Natl. Acad. Sci. U.S.A.

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In the late 20th century, cosmology became a precision science. Now, at the beginning of the next century, the parameters describing how our universe evolved from the Big Bang are generally known to a few percent. One key parameter is the total mass density of the universe. Normal matter constitutes only a small fraction of the total mass density. Observations suggest this additional mass, the dark matter, is cold (that is, moving nonrelativistically in the early universe) and interacts feebly if at all with normal matter and radiation. There's no known such elementary particle, so the strong presumption is the dark matter consists of particle relics of a new kind left over from the Big Bang. One of the most important questions in science is the nature of this dark matter. One attractive particle dark-matter candidate is the axion. The axion is a hypothetical elementary particle arising in a simple and elegant extension to the standard model of particle physics that nulls otherwise observable CP-violating effects (where CP is the product of charge reversal C and parity inversion P) in quantum chromo dynamics (QCD). A light axion of mass 10 −(6-3) eV (the invisible axion) would couple extraordinarily weakly to normal matter and radiation and would therefore be extremely difficult to detect in the laboratory. However, such an axion is a compelling dark-matter candidate and is therefore a target of a number of searches. Compared with other particle dark-matter candidates, the plausible range of axion dark-matter couplings and masses is narrowly constrained. This focused search range allows for definitive searches, where a nonobservation would seriously impugn the dark-matter QCD-axion hypothesis. Axion searches use a wide range of technologies, and the experiment sensitivities are now reaching likely dark-matter axion couplings and masses. This article is a selective overview of the current generation of sensitive axion searches. Not all techniques and experiments are discussed, but I hope to give a sense of the current experimental landscape of the search for dark-matter axions.What Makes Up the Dark Matter? One of the great discoveries of the last century is that the vast majority of all matter in the universe is made of something other than dust, planets, gas, etc., which is the ordinary matter we see around us. From observations, we now have an accurate accounting of the dark-matter fraction of the universe at around one-quarter of its total energy density, with almost all of the remaining mass and energy density of the universe being the mysterious "dark energy." From Milky Way galactic observations, our nearby dark-matter density is around one-half of proton mass per cubic centimeter.Observational constraints imposed by structure formation in the Universe plus the remnant light-isotope abundance from primordial nucleosynthesis suggest the dark matter is a new exotic particle relic left over from the Big Bang. Interestingly, light axions, with masses much less than that of the electron, have dark matter-like p...

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“…Meanwhile, the upper limits derived from the outcomes of the cited experimental collaborations remain many orders of magnitude bigger than the astrophysical one. While a new generation of "Light Shining Through a Wall" experiments might overcome this obstacle [46][47][48], there is a real demand for new theoretical efforts toward the search of complementary scenarios where potential improvements in the bounds of parameters of these dark matter candidates can be achieved [49][50][51].…”

Section: Jhep06(2015)177mentioning

confidence: 99%

Light dark matter candidates in intense laser pulses I: paraphotons and fermionic minicharged particles

Villalba-Chávez

Müller

2015

J. High Energ. Phys.

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Polarimetric experiments driven by the strong field of a circularly polarized laser wave can become a powerful tool to limit the parameter space of not yet detected hidden-photons and minicharged particles associated with extra U(1) gauge symmetries. We show how the absorption and dispersion of probe electromagnetic waves in the vacuum polarized by such a background are modified due to the coupling between the visible U(1)-gauge sector and these hypothetical degrees of freedom. The results of this analysis reveal that the regime close to the two-photon reaction threshold can be a sensititive probe of these hidden particles. Parameters of modern laser systems are used to estimate the projected sensitivities on the corresponding coupling constants in regions where experiments driven by dipole magnets are less constricted. The role played by a paraphoton field is analyzed via a comparison with a model in which the existence of minicharges is assumed only. For both scenarios is found that the most stringent exclusion limit occurs at the lowest threshold mass; this one being determined by a certain combination of the field frequencies and dictated by energy momentum balance of the photo-production of a pair of minicharged particles. The dependencies of the observables on the laser attributes as well as on the unknown particle parameters are also analyzed.

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Detailed design of a resonantly enhanced axion-photon regeneration experiment

Cited by 51 publications

References 35 publications

Optimizing light-shining-through-a-wall experiments for axion and other weakly interacting slim particle searches

Optimizing light-shining-through-a-wall experiments for axion and other weakly interacting slim particle searches

Dark-matter QCD-axion searches

Light dark matter candidates in intense laser pulses I: paraphotons and fermionic minicharged particles

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