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CP violation in the kaon system can manifest itself in decays to final states containing neutral kaons. The effect is governed by an efficiency function that reflects the specific experimental setup. We demonstrate that this efficiency…

High Energy Physics - Phenomenology · Physics 2025-09-10 Yuval Grossman , Paolo Leo , Alberto Martini , Guglielmo Papiri , Armine Rostomyan

This series of five lectures describes aspects of CP violation, emphasizing its description within the standard electroweak model. After discussing the kaon system, the only place in which CP violation has been seen so far, we turn to the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jonathan L. Rosner

This review of CP violation focuses on the status of the subject and its likely future development through experiments in the Kaon system and with B-decays. Although present observations of CP violation are perfectly consistent with the CKM…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. D. Peccei

We construct an extension of the supersymmetric standard model where both CP symmetry and R-parity are spontaneously broken. We study the electroweak symmetry breaking sector of the model and find minima consistent with the experimental…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Frank , K. Huitu , T. Rüppell

The Standard Model contains a natural source for CP asymmetries in weak decays, which is described by the KM mechanism. Beyond $\epsilon _K$ it generates only elusive manifestations of CP violation in {\em light-}quark systems. On the other…

High Energy Physics - Phenomenology · Physics 2009-09-25 I. I. Bigi

We summarize both the study of CP violation with $K$ and $B$ mesons, as well as rare decays of kaons, emphasizing recent developments. The topics discussed include the unitarity triangle, $\epsilon'/\epsilon$, $K\to\pi\nu\bar\nu$ and other…

High Energy Physics - Phenomenology · Physics 2007-05-23 Gerhard Buchalla

We propose a model-independent test of CP violation in the scalar sector. We consider a heavy neutral scalar $h_2$ with tree-level couplings at the $h_2 V V$ and $h_2 h_1 Z$ vertices (with $V=W^{\pm},Z$), alongside the 125~GeV SM-like Higgs…

High Energy Physics - Phenomenology · Physics 2026-05-01 Qianxi Li , Ying-nan Mao , Kechen Wang

CP violation in K and B decays is reviewed in the Standard Model (SM) and beyond the SM. In K decays, one is seeking first evidence for CP violation in direct $K\to \pi\pi$ decays. This would not give a precise quantitative test for the…

High Energy Physics - Phenomenology · Physics 2014-11-17 Michael Gronau

Some past, present, and future aspects of CP violation are reviewed. The discrete symmetries C, P, and T are introduced with an example drawn from Maxwell's Equations. The history of the discovery of CP violation in the kaon system is…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jonathan L. Rosner

We consider spontaneous CP violation in the Next to Minimal Supersymmetric Standard Model (NMSSM), without the usual $Z_3$ discrete symmetry. CP violation can occur at tree level, raising a potential conflict with the experimental bounds on…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. T. Davies , C. D. Froggatt , A. Usai

In the minimal Left-Right model the choice of left-right symmetry is twofold: either generalized parity $\mathcal P$ or charge conjugation $\mathcal C$. In the minimal model with spontaneously broken strict $\mathcal P$, a large tree-level…

High Energy Physics - Phenomenology · Physics 2014-11-11 Alessio Maiezza , Miha Nemevšek

These lectures give a brief description of CP violation in B and K meson decays with particular emphasize put on the determination of the CKM matrix. The following topics will be discussed: i) The CKM matrix, the unitarity triangle and…

High Energy Physics - Phenomenology · Physics 2017-08-23 Andrzej J. Buras

We build a model containing two scalar doublets and a scalar singlet with a specific discrete symmetry. After spontaneous symmetry breaking, the model has Standard Model-like phenomenology, as well as a hidden scalar sector which provides a…

High Energy Physics - Phenomenology · Physics 2018-12-05 Duarte Azevedo , P. M. Ferreira , M. Margarete Muhlleitner , Shruti Patel , Rui Santos , Jonas Wittbrodt

Although CP violation was discovered more than thirty years ago, its origin is still unknown. In these lectures, we describe the CP-violating effects which have been seen in K decays, and explain how CP violation can be caused by the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Boris Kayser

We re-examine spontaneous CP violation at the tree level in the context of the next-to-minimal supersymmetric standard model (NMSSM) with two Higgs doublets and a gauge singlet field. We analyse the most general Higgs potential without a…

High Energy Physics - Phenomenology · Physics 2010-02-03 G. C. Branco , F. Krüger , J. C. Romão , A. M. Teixeira

Utilizing results on the cosmology of anomalous discrete symmetries we show that models of spontaneous CP violation can in principle avoid the domain wall problem first pointed out by Zel'dovich, Kobzarev and Okun. A small but nonzero…

High Energy Physics - Phenomenology · Physics 2010-11-01 Lawrence M. Krauss , Soo-Jong Rey

We study that a minimal supersymmetric standard model with an extra $U(1)'$ gauge symmetry may accommodate the explicit CP violation at the one-loop level through radiative corrections. This model is CP conserving at the tree level and…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. W. Ham , E. J. Yoo , S. K. OH

Measurements of CP asymmetries in B decays will soon be made at $B$ factories and hadron machines. In light of this, we review and update the profile of the CKM unitarity triangle and the resulting CP asymmetries in B decays. This is done…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ahmed Ali , David London

In this talk I begin with some general discussion of the history of CP violation, then move on to aspects of a spontaneous CP violation model including the production of new particles at LHC, implications for B decay, generalized Cabibbo…

High Energy Physics - Phenomenology · Physics 2009-10-31 Paul H. Frampton

In the standard model (SM), the CP violation is introduced through a single phase in the CKM matrix. The neutral kaon system is one of the most precise channels to test how the SM theory describes the experiment data such as $\epsilon_K$…

High Energy Physics - Lattice · Physics 2012-11-06 Yong-Chull Jang , Weonjong Lee