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Discrete symmetry violation in the weak interaction is central to the Standard Model of particle physics, however the origin of these violations is not well understood. Nor are we able to provide a satisfactory explanation of the Universal…

High Energy Physics - Experiment · Physics 2015-09-02 Adrian Bevan

I review first some theoretical motivations for violation of Lorentz and/or CPT Invariance. Although the latter symmetries may be violated in a quantum gravity setting, nevertheless there are situations in which these violations are due to…

High Energy Physics - Phenomenology · Physics 2015-06-18 Nick E. Mavromatos

I review briefly various models and ways of Quantum-Gravity induced CPT violation, and discuss in some detail their phenomenology, in particular precision CPT tests in neutral mesons, and hydrogen/antihydrogen spectroscopy. As I shall…

High Energy Physics - Phenomenology · Physics 2009-11-10 Nick E. Mavromatos

Neutral flavour meson oscillations are a fascinating quantum phenomenon that allows for high-precision tests of fundamental symmetries, including CPT invariance. In this contribution, we present the methodology for testing CPT violation in…

High Energy Physics - Phenomenology · Physics 2025-07-09 W. Krzemien , M . Kmiec , A. Szabelski , W. Wislicki

Analogue models for CP violation in neutral-meson systems are studied in a general framework. No-go results are obtained for models in classical mechanics that are nondissipative or that involve one-dimensional oscillators. A complete…

High Energy Physics - Phenomenology · Physics 2009-09-25 Alan Kostelecky , Agnes Roberts

We present a systematic phenomenological analysis of the tests of CPT symmetry that are possible within an {\em open} quantum-mechanical description of the neutral kaon system that is motivated by arguments based on quantum gravity and…

High Energy Physics - Phenomenology · Physics 2009-09-11 J. Ellis , J. Lopez , N. Mavromatos , D. Nanopoulos

During the recent years experiments with neutral kaons have yielded remarkably sensitive results which are pertinent to such fundamental phenomena as CPT invariance (protecting causality), time-reversal invariance violation, coherence of…

High Energy Physics - Phenomenology · Physics 2009-11-11 Maria Fidecaro , Hans-Juerg Gerber

Recent measurements of observables sensitive to CPT, T and CP violation in neutral B meson mixing by the B-factory experiments Belle and BaBar are presented.

High Energy Physics - Experiment · Physics 2014-07-29 Markus Röhrken

In this talk I review briefly theoretical models and ideas on quantum gravity approaches entailing CPT violation. Then, I discuss various phenomenological tests of CPT violation using neutrinos, arguing in favour of their superior…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. E. Mavromatos

In this review I classify the possible ways of CPT violation, and I describe briefly their phenomenology, in both terrestrial and astrophysical experiments, including antimatter factories, neutral mesons and neutrinos, and discuss the…

High Energy Physics - Phenomenology · Physics 2015-06-25 Nick E. Mavromatos

A brief summary is given of recent developments concerning a Lorentz-violating extension of the standard model and its implications for experiments testing Lorentz and CPT symmetry.

High Energy Physics - Phenomenology · Physics 2007-05-23 Alan Kostelecky

This talk provides an overview of a string-based mechanism for spontaneous CPT violation. A summary is given of theoretical developments. The mechanism could generate CPT-violating contributions to a four-dimensional low-energy effective…

High Energy Physics - Phenomenology · Physics 2008-02-03 Alan Kostelecky

Spontaneous CPT breaking arising in string theory has been suggested as a possible observable experimental signature in neutral-meson systems. We provide a theoretical framework for the treatment of low-energy effects of spontaneous CPT…

High Energy Physics - Phenomenology · Physics 2009-09-25 Don Colladay , Alan Kostelecky

This talk summarizes some theoretical features and experimental implications of a general Lorentz-violating extension of the minimal SU(3) x SU(2) x U(1) standard model that allows for both CPT-even and CPT-odd effects. The theory would…

High Energy Physics - Phenomenology · Physics 2007-05-23 Alan Kostelecky

Certain types of asymmetries in neutral meson physics have not been treated properly, ignoring the difference of normalization factors with an assumption of the equality of total decay width. Since the corrected asymmetries in $B^0$ meson…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. C. Yoon

The conclusions summarize the main, but not all, aspects of a two-days workshop held at MITP Mainz. The four covered aspects are T violation in decays of neutral B mesons, T and CPT studies in B0B0bar transitions with Belle, future…

High Energy Physics - Experiment · Physics 2014-01-28 K. R. Schubert , L. Li Gioi , A. J. Bevan , A. Di Domenico

CP violation in the K system is pedagogically reviewed. We discuss its manifestations in the neutral K meson systems, in rare K meson decays and in decays of charged K mesons. Results from classical experiments, and perspectives for…

High Energy Physics - Experiment · Physics 2015-06-25 Juliet Lee-Franzini , Paolo Franzini

Genuine tests of an asymmetry under T and/or CPT transformations imply the interchange between in-states and out-states. I explain a methodology to perform model-indepedent separate measurements of the three CP, T and CPT symmetry…

High Energy Physics - Phenomenology · Physics 2015-05-27 J. Bernabeu

We analyze the prospects for observing CPT violation using neutral-meson P0-P0bar systems. Before one can claim a measurement of CPT violation, one must be able to rule out the possibility that its result is due to simpler new-physics…

High Energy Physics - Phenomenology · Physics 2009-10-31 L. Lavoura , Joao P. Silva

We present a general model-independent and rephase-invariant formalism that cleanly relates CP and CPT noninvariant observables to the fundamental parameters. Different types of CP and CPT violations in the K^0-, B^0-, B_s^0- and…

High Energy Physics - Phenomenology · Physics 2011-09-13 K. C. Chou , W. Palmer , E. A. Paschos , Y. L. Wu