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Related papers: Approximate CP in Supersymmetric Models

200 papers

In this work we study the CP violation for $\bar{B^0}\to J/\psi K_s$ and $\bar{B^0}\to \phi K_s$ up to leading and next-to-leading order QCD corrections in the standard model, two-Higgs-doublet model and the minimal supersymmetric extension…

High Energy Physics - Phenomenology · Physics 2009-10-30 Dong-Sheng Du , Mao-Zhi Yang

In the minimal supersymmetric standard model (MSSM) with complex parameters, supersymmetric loop effects can lead to \emph{CP} violation. We calculate the rate asymmetries of decays of charginos into the lightest neutralino and a $W$ boson…

High Energy Physics - Phenomenology · Physics 2009-11-07 Wei Min Yang , Dong Sheng Du

This is a written version of a series of lectures aimed at graduate students in the field of (theoretical and experimental) high energy physics. The main topics covered are: (i) The flavor sector of the Standard Model and the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yosef Nir

Supersymmetric (SUSY) theories include many new parameters, some of which are CP-violating. Assuming that SUSY is found at a future high-energy collider, we examine the decay stop2 -> stop1 tau- tau+ with an eye to obtaining information…

High Energy Physics - Phenomenology · Physics 2009-11-11 Ken Kiers , Alejandro Szynkman , David London

In this talk, I review the various measurements that have been made over the years of CP-violating observables in $B$ decays. These include indirect CP asymmetries, direct CP asymmetries, and triple products. All are discussed in the…

High Energy Physics - Phenomenology · Physics 2020-07-14 David London

Supersymmetric particles can be produced copiously at future colliders. From the high-precision data taken at e+e- linear colliders, TESLA in particular, and combined with results from LHC, and CLIC later, the low-energy parameters of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jan Kalinowski

Using a left-right symmetric model with Spontaneous CP Violation and the hypothesis of a weakly first order electroweak phase transition we derive a relation between the produced baryon asymmetry and the observed parameter $\varepsilon$,…

High Energy Physics - Phenomenology · Physics 2010-11-01 L. Reina , M. Tytgat

We construct the most general effective Lagrangian of the matter sector of the Standard Model, including mixing and CP violating terms. The Lagrangian contains the effective operators that give the leading contribution in theories where the…

High Energy Physics - Phenomenology · Physics 2009-10-31 D. Espriu , J. Manzano

We explore the prospects for observing CP violation in the minimal supersymmetric extension of the Standard Model (MSSM) with six CP-violating parameters, three gaugino mass phases and three phases in trilinear soft supersymmetry-breaking…

High Energy Physics - Phenomenology · Physics 2015-03-03 A. Arbey , J. Ellis , R. M. Godbole , F. Mahmoudi

We propose a new solution to the strong CP problem based on supersymmetric non-renormalization theorems. CP is broken spontaneously and it's breaking is communicated to the MSSM by radiative corrections. The strong CP phase is protected by…

High Energy Physics - Phenomenology · Physics 2014-11-17 G. Hiller , M. Schmaltz

We study the CP phases of the soft supersymmetry breaking terms in string-inspired models with non-universal trilinear couplings. We show that such non-universality plays an important role on all CP violating processes. In particular these…

High Energy Physics - Phenomenology · Physics 2009-10-31 Shaaban Khalil , Tatsuo Kobayashi , Antonio Masiero

We consider the possibility of observing CP violation in quasi-inclusive decays of the type $B^-\to K^- X$, $B^-\to K^{*-} X$, $\bar B^0\to K^- X$ and $\bar B^0\to K^{*-} X$, where $X$ does not contain strange quarks. We present estimates…

High Energy Physics - Phenomenology · Physics 2009-10-31 T. E. Browder , Alakabha Datta , X-G. He , Sandip Pakvasa

We briefly review the question of spontaneous CP violation in some models of weak interactions. The next-to-minimal supersymmetric standard model, with two Higgs doublets and one gauge singlet, is one of the minimal extensions of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ana M. Teixeira

The subject of CP violation in B decays is reviewed in the Standard Model (SM) and beyond the SM. The present explanation of CP violation in terms of phases in the Cabibbo-Kobayashi-Maskawa (CKM) matrix can be tested through a variety of CP…

High Energy Physics - Phenomenology · Physics 2016-09-06 M. Gronau

We present a bottom-up approach to the question of supersymmetry breaking in the MSSM. Starting with the experimentally measurable low energy supersymmetry breaking parameters which can take any values consistent with present experimental…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Olechowski

In the supersymmetric standard model which is not minimal, the Higgs potential does not conserve CP symmetry generally. Assuming that there exists an SU(2)-triplet Higgs field, we discuss resultant CP-violating effects on the Higgs bosons.…

High Energy Physics - Phenomenology · Physics 2016-06-01 Noriyuki Oshimo

We study CP violation phenomena with the subquark model which is previously proposed by us. Our subquark model claims that ``direct'' and ``indirect'' CP violation originate from different sources, which are both belonging to subquark…

High Energy Physics - Phenomenology · Physics 2016-09-06 Takeo Matsushima

We discuss CP-violation in a model with a real and a complex isospin triplet Higgs fields without introducing any symmetries except for the electroweak gauge symmetry. This corresponds to the minimal extension of the Higgs sector with the…

High Energy Physics - Phenomenology · Physics 2023-06-16 Ting-Kuo Chen , Cheng-Wei Chiang , Kei Yagyu

We comment on the implications of the recently measured CP asymmetry in B --> Phi K_S decay. The data disfavor the Standard Model at 2.7 sigma and -if the trend persists in the future with higher statistics - require the existence of CP…

High Energy Physics - Phenomenology · Physics 2009-11-07 Gudrun Hiller

In the framework of the left-right symmetric model the CP-parity violation has been studied in heavy Majorana neutrino decays $N\rightarrow e^{\mp} \mu^{\pm} n$. The numerical estimates of CP-asymmetry for different masses of neutrino and…

High Energy Physics - Phenomenology · Physics 2010-11-01 R. A. Alanakyan , H. M. Asatrian , A. N. Ioannisian , S. A. Chatrchyan