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Article

Phenomenological Effects of CPT and Lorentz Invariance Violation in Particle and Astroparticle Physics

1
Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, I-20133 Milano, Italy
2
INFN, Sezione di Milano, via Celoria 16, I-20133 Milano, Italy
*
Author to whom correspondence should be addressed.
Symmetry 2020, 12(11), 1821; https://doi.org/10.3390/sym12111821
Received: 15 September 2020 / Revised: 19 October 2020 / Accepted: 28 October 2020 / Published: 3 November 2020
(This article belongs to the Special Issue Symmetry, CPT and Astroparticles)
It is well known that a fundamental theorem of Quantum Field Theory (QFT) set in flat spacetime ensures the CPT invariance of the theory. This symmetry is strictly connected to the Lorentz covariance, and consequently to the fundamental structure of spacetime. Therefore it may be interesting to investigate the possibility of departure from this fundamental symmetry, since it can furnish a window to observe possible effects of a more fundamental quantum gravity theory in a “lower energy limit”. Moreover, in the past, the inquiry of symmetry violations provided a starting point for new physics discoveries. A useful physical framework for this kind of search is provided by astroparticle physics, thanks to the high energy involved and to the long path travelled by particles accelerated by an astrophysical object and then revealed on Earth. Astrophysical messengers are therefore very important probes for investigating this sector, involving high energy photons, charged particles, and neutrinos of cosmic origin. In addition, one can also study artificial neutrino beams, investigated at accelerator experiments. Here we discuss the state of art for all these topics and some interesting new proposals, both from a theoretical and phenomenological point of view. View Full-Text
Keywords: reactor neutrinos; oscillation and mixing parameters; mass Hierachy reactor neutrinos; oscillation and mixing parameters; mass Hierachy
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MDPI and ACS Style

Antonelli, V.; Miramonti, L.; Torri, M.D.C. Phenomenological Effects of CPT and Lorentz Invariance Violation in Particle and Astroparticle Physics. Symmetry 2020, 12, 1821. https://doi.org/10.3390/sym12111821

AMA Style

Antonelli V, Miramonti L, Torri MDC. Phenomenological Effects of CPT and Lorentz Invariance Violation in Particle and Astroparticle Physics. Symmetry. 2020; 12(11):1821. https://doi.org/10.3390/sym12111821

Chicago/Turabian Style

Antonelli, Vito, Lino Miramonti, and Marco D.C. Torri. 2020. "Phenomenological Effects of CPT and Lorentz Invariance Violation in Particle and Astroparticle Physics" Symmetry 12, no. 11: 1821. https://doi.org/10.3390/sym12111821

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