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Related papers: Landscaping CP-violating BSM scenarios

200 papers

We investigate the sensitivity of the next generation of flavor-based low-energy experiments to probe the supersymmetric parameter space in the context of the phenomenological MSSM (pMSSM), and examine the complementarity with direct…

High Energy Physics - Phenomenology · Physics 2016-02-24 Joshua Berger , Matthew W. Cahill-Rowley , Diptimoy Ghosh , JoAnne L. Hewett , Ahmed Ismail , Thomas G. Rizzo

We consider the most general set of $SU(2) \times U(1)$ invariant CP-violating operators of dimension six, which contribute to $VVh$ interactions ($V = W, Z, \gamma$). Our aim is to constrain any CP-violating new physics above the…

High Energy Physics - Phenomenology · Physics 2015-11-18 Siddharth Dwivedi , Dilip Kumar Ghosh , Biswarup Mukhopadhyaya , Ambresh Shivaji

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

The complete analysis of the CP violation in the process $\gamma \gamma \to t \bar{t}$ in frame of the Minimal Supersymmetric Model(MSSM) is presented. The CP-odd observables for describing the CP violating effects in polarized and…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhou Mian-Lai , Ma Wen-Gan , Han Liang , Jiang Yi , Zhou Hong

The supersymmetric CP problem is studied within superstring-motivated extensions of the MSSM with an additional U(1)' gauge symmetry broken at the TeV scale. This class of models offers an attractive solution to the mu problem of the MSSM,…

High Energy Physics - Phenomenology · Physics 2014-11-17 D. A. Demir , L. L. Everett

It is shown that the mechanism of spontaneous symmetry breaking provides not only a mechanism for giving mass to the bosons and the fermions, but also a mechanism for generating CP-phase of the bosons and the fermions. A two-Higgs doublet…

High Energy Physics - Phenomenology · Physics 2008-02-03 Yue-Liang Wu

We discuss CP violation in supersymmetric theories and show that CP phenomena can act as a probe of their origins, i.e., compactification and spontaneous supersymmetry breaking. CP violation as a probe of the flavor structure of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Tarek Ibrahim , Pran Nath

We address the challenging issue of how CP violation is realized in higher dimensional gauge theories without higher dimensional elementary scalar fields. In such theories interactions are basically governed by a gauge principle and…

High Energy Physics - Phenomenology · Physics 2010-05-12 C. S. Lim , Nobuhito Maru , Kenji Nishiwaki

We propose a new mechanism called "real CP violation" to originate spontaneous CP violation. Starting with a CP conserving theory with scalar fields in the adjoint representation of a global or local non-abelian symmetry, we show that even…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Masiero , T. Yanagida

We discuss the prospects for observing CP violation in the MSSM with six CP-violating phases, using a geometric approach to maximise CP-violating observables subject to the experimental upper bounds on electric dipole moments. We consider…

High Energy Physics - Phenomenology · Physics 2016-11-17 A. Arbey , J. Ellis , R. M. Godbole , F. Mahmoudi

A review of CP violation in the $B$ system and strategies to determine the unitarity triangle of the CKM matrix is given. We begin with an introduction to the description of CP violation in the Standard Model of electroweak interactions,…

High Energy Physics - Phenomenology · Physics 2014-11-17 Robert Fleischer

We investigate the possibilities of searching for non-standard CP violation in $pp\to t\bar{t}X$ at multiple TeV collision energies. A general kinematic analysis of the underlying partonic production processes $gg\to t\bar{t}$ and…

High Energy Physics - Phenomenology · Physics 2014-11-17 W. Bernreuther , A. Brandenburg

We explore CP-violating (CPV) effects of heavy New Physics in flavour-changing quark dipole transitions, within the framework of Standard Model Effective Field Theory (SMEFT). First, we establish the relevant dimension six operators and…

High Energy Physics - Phenomenology · Physics 2023-06-30 Svjetlana Fajfer , Jernej F. Kamenik , Nejc Košnik , Aleks Smolkovič , Michele Tammaro

We examine the possibility of building a natural non-supersymmetric model of spontaneous CP violation equipped with the Nelson-Barr (NB) mechanism to address the strong CP problem. Our approach is to utilize a doubly composite dynamics…

High Energy Physics - Phenomenology · Physics 2022-12-28 Sudhakantha Girmohanta , Seung J. Lee , Yuichiro Nakai , Motoo Suzuki

We identify new room for CP violation in lepton flavor violating observables not bound by the electric dipole moment of leptons. By focusing on new physics in the muon-electron sector, we show that CP violation can make its first appearance…

High Energy Physics - Phenomenology · Physics 2024-08-05 Diego Redigolo , Michele Tammaro , Andrea Tesi

We present the general formalism for studying CP-violating phenomena in the production,mixing and decay of a coupled system of CP-violating neutral Higgs bosons at high-energy colliders. Considering the Minimal Supersymmetric Standard Model…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jae Sik Lee

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

High Energy Physics - Phenomenology · Physics 2014-11-17 A. T. Davies , C. D. Froggatt , A. Usai

We derive an effective action of the bosonic sector of the Standard Model by integrating out the fermionic degrees of freedom in the worldline approach. The CP violation due to the complex phase in the CKM matrix gives rise to CP-violating…

High Energy Physics - Phenomenology · Physics 2009-11-13 Andres Hernandez , Thomas Konstandin , Michael G. Schmidt

CP violation in the field of $B$ physics is a crucial topic for exploring the quark sector and search for New Physics, both for theorists and experimentalists. CP violation manifests itself in various ways and in this presentation, we will…

High Energy Physics - Phenomenology · Physics 2024-02-16 Eleftheria Malami

We review CP properties of the Two-Higgs-Doublet model. In particular, we show that spontaneous CP violation occurs in the parameter space on the border between regions allowing explicit CP violation and those where there is another…

High Energy Physics - Phenomenology · Physics 2015-04-28 B. Grzadkowski , O. M. Ogreid , P. Osland