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We summarize the results of two papers in which we have studied CP violation in inclusive and exclusive decays b -> d e^+e^-. Two CP-violating effects are calculated: the partial rate asymmetry between b and \bar{b} decay, and the asymmetry…

高能物理 - 唯象学 · 物理学 2007-05-23 F. Krüger , L. M. Sehgal

This is a pedagogical review of some selected topics of CP and T violation in the decays of K mesons. Diagonalization of the quark mass matrix and the emergence of the complex phase in both the standard and the left--right symmetric models…

高能物理 - 唯象学 · 物理学 2007-05-23 R. N. Rogalyov

We study effects of CP violation in an associated production of a charged Higgs boson and a top quark at the LHC: $pp \to tH^\pm +X$. We calculate the CP violating asymmetry between the total cross section for $H^+$ and $H^-$ production at…

高能物理 - 唯象学 · 物理学 2008-12-19 Ekaterina Christova , Helmut Eberl , Elena Ginina

We study the general Higgs-weak boson coupling with CP-violation via the process e+e- -> f \bar f h. We categorize the signal channels by sub-processes Zh production and ZZ fusion and construct four CP asymmetries by exploiting polarized…

高能物理 - 唯象学 · 物理学 2014-11-17 T. Han , J. Jiang

In this paper, we study CP violation in $\Lambda_c^+\to BP$ and $\Lambda_c^+\to BV$ decays, where $B,P$ and $V$ denote a light spin-1/2 baryon, pseudoscalar and a vector meson respectively. In these processes the $T$ odd CP violating…

高能物理 - 唯象学 · 物理学 2011-06-16 Xian-Wei Kang , Hai-Bo Li , Gong-Ru Lu , Alakabha Datta

We discuss a decay rate asymmetry of the top squark, which is induced by a new source of CP violation intrinsic in the supersymmetric standard model. Although new sources of CP violation in this model are severely constrained from the…

高能物理 - 唯象学 · 物理学 2009-10-31 Mayumi Aoki , Noriyuki Oshimo

We examine the CP-conserving (CPC) and CP-violating (CPV) effects of a general HZZ coupling through a study of the process H -> ZZ* -> 4 leptons at the LHC. We construct asymmetries that directly probe these couplings. Further, we present…

高能物理 - 唯象学 · 物理学 2009-04-09 Rohini M. Godbole , David J. Miller , M. Margarete Mühlleitner

We consider, both for unpolarized and longitudinally polarized electron beams, the production of a top quark pair in e+e- collisions with subsequent semileptonic top and nonleptonic anti-top decay and vice versa and investigate optimized…

高能物理 - 唯象学 · 物理学 2015-06-25 Werner Bernreuther , Peter Overmann

CP violating asymmetries in both the production and the decays of $s$-channel neutral Higgs bosons at $\mu^+\mu^-$ colliders can be large. If the CP violation occurs in the muon-Higgs coupling, one observes a production asymmetry with…

高能物理 - 唯象学 · 物理学 2010-11-01 David Atwood , Amarjit Soni

We study CP-violating phenomena in the production, mixing and decay of a coupled system of CP-violating neutral Higgs bosons at \gamma \gamma colliders, assuming a Minimal Supersymmetric Standard Model (MSSM) Higgs sector in which CP…

高能物理 - 唯象学 · 物理学 2009-09-11 John Ellis , Jae Sik Lee , Apostolos Pilaftsis

Discovery of the CP-violation in the lepton sector is one of the challenges of the particle physics. We search for possible principles, symmetries and phenomenological relations that can lead to particular values of the CP-violating Dirac…

高能物理 - 唯象学 · 物理学 2010-10-27 Y. Farzan , A. Yu. Smirnov

Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons…

高能物理 - 实验 · 物理学 2023-07-21 CMS Collaboration

We review CP-violating effects in Z --> 3 jet and Z --> 4 jet decays, assuming the presence of CP-violating effective Z b bbar G and Z b bbar G G couplings. Longitudinal beam polarization is included in the studies. We propose a direct…

高能物理 - 唯象学 · 物理学 2011-03-23 O. Nachtmann , C. Schwanenberger

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…

高能物理 - 唯象学 · 物理学 2009-10-31 Shaaban Khalil , Tatsuo Kobayashi , Antonio Masiero

I discuss strategies for probing CP properties in the top quark system at $e^-e^+$ and hadron Colliders. The magnitudes of CP violation effects predicted by various models are reviewed. I also discuss the potential of various current and…

高能物理 - 唯象学 · 物理学 2010-11-01 C. -P. Yuan

This paper studies the utility of the processes $\gamma \gamma \to \gamma \gamma$, $\gamma Z$, and $ZZ$ in searching for sources of CP violation arising from energy scales beyond the production thresholds of planned future colliders. In the…

高能物理 - 唯象学 · 物理学 2010-05-28 JoAnne L. Hewett , Frank J. Petriello

In the CP violating supersymmetric extension of the standard model with local gauged baryon and lepton symmetries(BLMSSM), there are new CP violating sources which can give new contributions to the quark electric dipole moment (EDM).…

高能物理 - 唯象学 · 物理学 2017-03-08 Shu-Min Zhao , Tai-Fu Feng , Zhong-Jun Yang , Hai-Bin Zhang , Xing-Xing Dong , Tao-Guo

We study the capability of a $2 TeV$ $p\overline{p}$ collider with an integrated luminosity of $10 fb^{-1}$ to study CP violation in the processes $p \bar{p} \ra W^\pm \gamma$ and $p \bar{p} \ra Z \gamma$. We assume the existence of new CP…

高能物理 - 唯象学 · 物理学 2014-11-17 S. Dawson , X. -G. He , G. Valencia

We obtain analytic formulae for the cross section of the sequential processes of $e^+ e^- \to t \bar t$ and $t \to b l \nu$ in the laboratory frame where the dependence on triple product correlations of the type ($\hat(q}_1 x \hat{q}_2 .…

高能物理 - 唯象学 · 物理学 2009-10-28 A. Bartl , E. Christova , W. Majerotto

The lepton or baryon number violating top quark interactions in the supersymmetric standard model with R parity violation contribute to the process d dbar to t tbar at the tree level via the t- or u-channel sfermion exchange. Since these…

高能物理 - 唯象学 · 物理学 2009-10-31 Ken-ichi Hikasa , Jin Min Yang , Bing-Lin Young