Limits on Non-Linear Electrodynamics

Fouché, M; Battesti, R; Rizzo, C

doi:10.48550/arxiv.1605.04102

Cited by 4 publications

(6 citation statements)

References 40 publications

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“…[88]; see also Refs. [89,90]. Discussion of experimental limits on the photonic component of c B 4 i can be found in Ref.…”

Section: Su(3)mentioning

confidence: 99%

“…Having converted our bounds into the aQGC notation, we see from Eqs. ( 86), (88), and (90) that we are able to demand the positivity of four of the 18 commonly-used aQGC couplings individually, with a further five coefficients entering bounds containing two operators and an additional four coefficients entering only bounds containing three operators. Two depictions of the allowed space are shown in Fig.…”

mentioning

confidence: 99%

“…In this space, we show the 95% confidence level (CL) limits derived by CMS[32] under the assumption that c S,2 precisely vanishes. On the right, we provide an example of two parameters relevant for aQGCs where our bounds are more restrictive, c T,6 and c T,7 , as determined from Eq (90)…”

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confidence: 99%

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Consistency of the standard model effective field theory

Remmen¹,

Rodd²

2019

J. High Energ. Phys.

120

117

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We derive bounds on couplings in the standard model effective field theory (SMEFT) as a consequence of causality and the analytic structure of scattering amplitudes. In the SMEFT, there are 64 independent operators at mass dimension eight that are quartic in bosons (either Higgs or gauge fields) and that contain four derivatives and/or field strengths, including both CP-conserving and CP-violating operators. Using analytic dispersion relation arguments for two-to-two bosonic scattering amplitudes, we derive 27 independent bounds on the sign or magnitude of the couplings. We show that these bounds also follow as a consequence of causality of signal propagation in nonvacuum SM backgrounds. These bounds come in two qualitative forms: i) positivity of (various linear combinations of) couplings of CP-even operators and ii) upper bounds on the magnitude of CP-odd operators in terms of (products of) CP-even couplings. We exhibit various classes of example completions, which all satisfy our EFT bounds. These bounds have consequences for current and future particle physics experiments, as part of the observable parameter space is inconsistent with causality and analyticity. To demonstrate the impact of our bounds, we consider applications both to SMEFT constraints derived at colliders and to limits on the neutron electric dipole moment, highlighting the connection between such searches suggested by infrared consistency.

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“…[88]; see also Refs. [89,90]. Discussion of experimental limits on the photonic component of c B 4 i can be found in Ref.…”

Section: Su(3)mentioning

confidence: 99%

mentioning

confidence: 99%

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Consistency of the standard model effective field theory

Remmen¹,

Rodd²

2019

J. High Energ. Phys.

120

117

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show abstract

“…For comparison, note that the phase noise equivalent is 3 × 10 −12 rad/ √ Hz at 10 Hz, better than the state of the art gravitational wave interferometer LIGO [457]. A recent review on the experimental search of non-linear QED effects can be found in [458]. After a photon-regeneration experiment to disprove the ALP interpretation of PVLAS (see next section), the BMV collaboration in Toulouse, formed with the goal of measuring the QED birefringence using strong pulsed magnets from the LNCMI.…”

Section: Polarization Experimentsmentioning

confidence: 99%

New experimental approaches in the search for axion-like particles

Irastorza,

Redondo

2018

Preprint

110

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Axions and other very light axion-like particles appear in many extensions of the Standard Model, and are leading candidates to compose part or all of the missing matter of the Universe. They also appear in models of inflation, dark radiation, or even dark energy, and could solve some long-standing astrophysical anomalies. The physics case of these particles has been considerably developed in recent years, and there are now useful guidelines and powerful motivations to attempt experimental detection. Admittedly, the lack of a positive signal of new physics at the high energy frontier, and in underground detectors searching for weakly interacting massive particles, is also contributing to the increase of interest in axion searches. The experimental landscape is rapidly evolving, with many novel detection concepts and new experimental proposals. An updated account of those initiatives is lacking in the literature. In this review we attempt to provide such an update. We will focus on the new experimental approaches and their complementarity, but will also review the most relevant recent results from the consolidated strategies and the prospects of new generation experiments under consideration in the field. We will also briefly review the latest developments of the theory, cosmology and astrophysics of axions and we will discuss the prospects to probe a large fraction of relevant parameter space in the coming decade.

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“…21,22 where it has been proposed that the effect of vacuum birefringence [23][24][25] may be tested in counter-propagating laser beams (see also Ref. 26 for more general tests of nonlinear electrodynamics).…”

Section: Introductionmentioning

confidence: 99%

Polarization effects in light-by-light scattering: Euler–Heisenberg versus Born–Infeld

Rebhan

Turk

2017

Int. J. Mod. Phys. A

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The angular dependence of the differential cross section of unpolarized light-by-light scattering summed over final polarizations is the same in any low-energy effective theory of quantum electrodynamics and also in Born-Infeld electrodynamics. In this paper we derive general expressions for polarization-dependent low-energy scattering amplitudes, including a hypothetical parity-violating situation. These are evaluated for quantum electrodynamics with charged scalar or spinor particles, which give strikingly different polarization effects. Ordinary quantum electrodynamics is found to exhibit rather intricate polarization patterns for linear polarizations, whereas supersymmetric quantum electrodynamics and Born-Infeld electrodynamics give particularly simple forms.

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Limits on Non-Linear Electrodynamics

Cited by 4 publications

References 40 publications

Consistency of the standard model effective field theory

Consistency of the standard model effective field theory

New experimental approaches in the search for axion-like particles

Polarization effects in light-by-light scattering: Euler–Heisenberg versus Born–Infeld

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