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We present the current wisdom regarding the measurement of the CP-violating phases of the CKM unitarity triangle in $B$-meson decays. After an introduction to the SM picture of CP violation, we review direct and indirect CP violation, the…

高能物理 - 唯象学 · 物理学 2007-05-23 Oscar F. Hernandez , David London

We study the potential observation at the LHC of CP-violating effects in stop production and subsequent cascade decays, g g -> tilde{t}_i tilde{t}_i, tilde{t}_i -> t tilde{chi}^0_j, tilde{chi}^0_j -> tilde{\chi}^0_1 l^+ l^-, within the…

高能物理 - 唯象学 · 物理学 2009-04-24 J. Ellis , F. Moortgat , G. Moortgat-Pick , J. M. Smillie , J. Tattersall

We find in theories with spontaneous P and CP violation that symmetries needed to set the tree level strong CP phase to zero can also set all non-zero tree level CP violating phases to the maximal value \pi / 2 in the symmetry basis…

高能物理 - 唯象学 · 物理学 2012-09-27 Ravi Kuchimanchi

We reexamine large CP-violating phases in the general Minimal Supersymmetric Standard Model, as well as more restricted models. We perform a detailed scan over parameter space to find solutions which satisfy the current experimental limits…

高能物理 - 唯象学 · 物理学 2009-09-15 V. Barger , T. Falk , T. Han , J. Jiang , T. Li , T. Plehn

We consider CP violating effects in decays of the type $B\rightarrow k_i\gamma \rightarrow K\pi\gamma$, $K^*\pi\gamma$ and $K\rho\gamma$, where $k_i$ represents a strange meson resonance. We include in our calculations five of the low-lying…

高能物理 - 唯象学 · 物理学 2010-11-01 D. Atwood , A. Soni

Results are presented on a search for CP violation in the production and decay of top quark-antiquark pairs in the lepton+jets channel. The search is based on data from proton-proton collisions at 13 TeV, collected with the CMS detector,…

高能物理 - 实验 · 物理学 2023-06-21 CMS Collaboration

The determination of the mixing induced CP-violating asymmetry in decays such as $B^0_s \to J/\psi \phi$ is one of the key goals of the LHCb experiment. Its value is predicted to be very small in the Standard Model but can be significantly…

高能物理 - 实验 · 物理学 2019-08-13 D. van Eijk

We extend to the highly degenerate case a recent approach for analyzing the sources of CP violation in baryogenesis models with quasi-degenerate neutrinos. In this approach an expansion of the resummed propagator around the poles is plugged…

高能物理 - 唯象学 · 物理学 2021-11-24 J. Racker

The phenomenon of CP violation and strategies for extracting the angles of the unitarity triangle are reviewed. Special emphasis is given to the B-meson system, as it plays an outstanding role to test the Standard Model description of CP…

高能物理 - 唯象学 · 物理学 2007-05-23 Robert Fleischer

In the Minimal Supersymmetric Standard Model, physical phases of complex parameters lead to CP violation. We show how triple products of particle momenta or spins can be used to construct asymmetries, that allow us to probe these CP phases.…

高能物理 - 唯象学 · 物理学 2009-07-22 Olaf Kittel

Strategies for extracting CKM phases from non-leptonic $B$ decays are reviewed briefly. Both general aspects and some recent developments including CP-violating asymmetries, the $B_s$ system in light of a possible width difference…

高能物理 - 唯象学 · 物理学 2007-05-23 Robert Fleischer

CP violation in top physics is reviewed. The Standard Model has negligible effects, consequently CP violation searches involving the top quark may constitute the best way to look for physics beyond the Standard Model. Non-standard sources…

高能物理 - 唯象学 · 物理学 2009-09-25 David Atwood , Shaouly Bar-Shalom , Gad Eilam , Amarjit Soni

We investigate for two-Higgs doublet models with intrinsic CP violation in the scalar potential CP-nonconserving effects in unpolarized $\gamma \gamma \rightarrow t \bar{t} $ for a range of neutral Higgs boson masses which includes resonant…

高能物理 - 唯象学 · 物理学 2014-11-17 H. Anlauf , W. Bernreuther , A. Brandenburg

The existence of Beyond Standard Model (BSM) physics is firmly suggested by both experimental observations (Dark Matter, neutrino masses) and theoretical arguments. In the hypothesis that the scale of new physics is considerably higher than…

高能物理 - 唯象学 · 物理学 2021-09-08 Luca Mantani

We proceed to study the $CP$ asymmetry in the angular distributions of $\tau\to K_S\pi\nu_\tau$ decays within a general effective field theory framework including four-fermion operators up to dimension-six. It is found that, besides the…

高能物理 - 唯象学 · 物理学 2022-02-09 Feng-Zhi Chen , Xin-Qiang Li , Shi-Can Peng , Ya-Dong Yang , Hong-Hao Zhang

We consider three possible scenarios of new physics in B^0_d-\bar{B}^0_d mixing and propose a simple framework for analyzing their effects. This framework allows us to study the CP asymmetry in semileptonic B_d decays ({\cal A}_{SL}) and…

高能物理 - 唯象学 · 物理学 2009-10-30 A. I. Sanda , Zhi-zhong Xing

I review the many ways of obtaining information about the CKM matrix through CP violation in the $B$ system. I include direct and indirect CP violation, the role of penguins and isospin analysis, tagging, and $B\to DK$ decays. I also…

高能物理 - 唯象学 · 物理学 2009-10-28 David London

Within the standard model we carry out an analysis of $CP$-violating observables in neutral $B$-meson decays at the $\Upsilon (4S)$ resonance. Both time-dependent and time-integrated $CP$ asymmetries are calculated, without special…

高能物理 - 唯象学 · 物理学 2010-11-01 H. Fritzsch , D. Wu , Z. Xing

I analyzed the CP asymmetry of $B\to X_sl^+l^-$ based on model-independent analysis which includes twelve independent four Fermi operators. The CP asymmetry is suppressed in the Standard Model, however, if some new physics make it much…

高能物理 - 唯象学 · 物理学 2009-11-07 S. Fukae

We review the subject of CP violation in $B$ decays in the Standard Model (SM) and beyond the SM. We describe some of the present most promising ways of testing the Cabibbo-Kobayashi-Maskawa (CKM) origin of CP violation through a…

高能物理 - 唯象学 · 物理学 2014-11-17 M. Gronau