Bounds on spin-dependent Lorentz violation from inverse Compton observations

Altschul, Brett

doi:10.1103/physrevd.75.041301

Cited by 24 publications

(14 citation statements)

References 34 publications

(30 reference statements)

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“…Once the contributions from the different channels are included, the K-independent term V ð0Þ 1 ¼ À Àð=2Þ 2ð4Þ 2 reproduces the Oð 2 Þ Lorentzinvariant term of Eq. (22). Therefore, the remaining n-dependent factor in Eq.…”

Section: A and Functionsmentioning

confidence: 93%

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Renormalization of scalar and Yukawa field theories with Lorentz violation

2011

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We consider a theory of scalar and spinor fields, interacting through Yukawa and 4 interactions, with Lorentz-violating operators included in the Lagrangian. We compute the leading quantum corrections in this theory. The renormalizability of the theory is explicitly shown up to one-loop order. In the pure scalar sector, the calculations can be generalized to higher orders and to include finite terms, because the theory can be solved in terms of its Lorentz-invariant version.

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Section: A and Functionsmentioning

confidence: 93%

“…Examinations of fermion-photon interactions have led to bounds on many of the parameters contained in the SME [20][21][22][23][24][25][26][27]. The Yukawa sector has been rather little studied in the SME context [28][29][30], in spite of its great importance for mass generation in the SM.…”

Section: Introductionmentioning

confidence: 98%

Renormalization of scalar and Yukawa field theories with Lorentz violation

2011

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“…Second, there only needs to be one helicity of electrons for which the Lorentz factor γ max is reached. It is because the d νµ terms always speed up one spin state and slow down the other that they appear in (7) in the undesirable fashion they do. Without independent bounds on the d νµ , it is not possible to extract bounds on the c νµ from (7).…”

Section: Relativistic Particle Energies In the Minimal Smementioning

confidence: 99%

“…The very fact that such γ-rays can be produced at all actually reveals quite a bit about the energy-momentum relations for the parent particles in these reactions, as well as the daughter photons. Experimental observations of the spectra of astrophysical γ-ray sources may thus be used to place bounds on Lorentz violation in both the lepton and hadron sectors of the SME [5][6][7][8][9], although our principal focus here will be on the leptonic sector.…”

Section: Introductionmentioning

confidence: 99%

Improved Bounds on Lorentz Symmetry Violation from High-Energy Astrophysical Sources

Altschul

2021

Symmetry

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Observations of the synchrotron and inverse Compton emissions from ultrarelativistic electrons in astrophysical sources can reveal a great deal about the energy–momentum relations of those electrons. They can thus be used to place bounds on the possibility of Lorentz violation in the electron sector. Recent γ-ray telescope data allow the Lorentz-violating electron cνμ parameters to be constrained extremely well, so that all bounds are at the level of 7×10−16 or better.

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“…The fact that such photons are produced at all tells us things about energy-momentum relations of all the particles that are involved in the reaction. The experimental observation of the spectra of astrophysical γ-ray sources can therefore be used to place bounds on Lorentz violation in the lepton and hadron sectors of the SME [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%