Experimental Limit on Optical-Photon Coupling to Light Neutral Scalar Bosons

Afanasev, A.; Baker, O. K.; Beard, K.; Biallas, George; Boyce, J.R.; Minarni, M.; Ramdon, R.; Shinn, Michelle D.; Slocum, P. L.

doi:10.1103/physrevlett.101.120401

Cited by 106 publications

(91 citation statements)

References 43 publications

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“…(For laboratory limits, see Refs. [78,79].) However, the chameleon is essentially inert during inflation: it rolls rapidly to its minimum, and is fixed there for the duration of inflation [80].…”

Section: Discussionmentioning

confidence: 99%

Magnetogenesis and the primordial non-gaussianity

Seery¹

2009

J. Cosmol. Astropart. Phys.

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Abstract. The primordial density fluctuation inevitably couples to all forms of matter via loop corrections and depends on the ambient conditions while inflation was ongoing. This gives us an opportunity to observe processes which were in progress while the universe was inflating, provided they were sufficiently dramatic to overcome suppression by powers of (H/M P ) 2 ≈ 10 −9 , where H is the Hubble scale during inflation and M P is the Planck mass. As an example, if a primordial magnetic field was synthesized during inflation, as suggested by some interpretations of the apparently universal 10 −6 gauss field observed on galactic scales, then this could leave traces in inflationary observables. In this paper, I compute corrections to the spectrum and bispectrum generated by a varying electromagnetic coupling during inflation, assuming that the variation in this coupling is mediated by interaction with a collection of light scalar fields. If the mass scale associated with this interaction is too far below the Planck scale then the stability of perturbation theory can be upset. For the mass-scale which is relevant in the standard magnetogenesis scenario, however, the theory is stable and the model is apparently consistent with observational constraints.

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Section: Discussionmentioning

confidence: 99%

Magnetogenesis and the primordial non-gaussianity

Seery¹

2009

J. Cosmol. Astropart. Phys.

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“…This directly increases the probability of γ → ALP → γ conversion, which at small masses scales as ∝ (BL) 4 . Nearly all the current LSW experiments (ALPS [50,51], BFRT [52,53], BMV [54,55], GammeV [56], LIPSS [57,58] and OSQAR [59]) performed so far, recycle one or two of the long superconducting dipole magnets from accelerator rings, such as the ones from HERA, Tevatron or LHC. A straightforward improvement can be achieved by using a larger number of these magnets (e.g.…”

Section: Introductionmentioning

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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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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“…Indeed, on the basis of the mentioned optical properties of the polarized vacuum, collaborations such as BFRT [29], PVLAS [30,31], BMV [32], and Q & A [33] have performed high-precision polarimetric measurements on a low-energy photon beam which traverses a magnetic field region. Likewise, based on the idea of photon regeneration, many "Light Shining Through a Wall" experiments have been put forward [34][35][36][37][38][39][40][41][42], but in none of these setups a weakly interacting sub-eV particle has been detected so far. Instead, the range of the unknown particle masses and coupling constants has been constricted.…”

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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Experimental Limit on Optical-Photon Coupling to Light Neutral Scalar Bosons

Cited by 106 publications

References 43 publications

Magnetogenesis and the primordial non-gaussianity

Magnetogenesis and the primordial non-gaussianity

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

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

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