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相关论文: Supersymmetric CP violation $\epsilon'/\epsilon$ d…

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We study the predictions for the direct CP violation parameter epsilon'/epsilon in a class of string-inspired model with non-universal soft A-terms. We show that the non-universality of the A-terms plays an important rule in enhancing the…

高能物理 - 唯象学 · 物理学 2007-05-23 S. Khalil

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

We consider effects of CP violating phases in \mu and A_t parameters in the effective supersymmetric standard model on B\to X_s l^+ l^- and \epsilon_K. Scanning over the MSSM parameter space with experimental constraints including edm…

高能物理 - 唯象学 · 物理学 2009-10-31 Seungwon Baek , Pyungwon Ko

Supersymmetric models with a high supersymmetry breaking scale give, in general, large contributions to epsilon_K and/or to various electric dipole moments, even when contributions to CP conserving, flavor changing processes are…

高能物理 - 唯象学 · 物理学 2014-11-17 Michael Dine , Erik Kramer , Yosef Nir , Yael Shadmi

We find that dilaton dominated supersymmetry breaking and spontaneous CP violation can be achieved in heterotic string models with superpotentials singular at the fixed points of the modular group. A semi--realistic picture of CP violation…

高能物理 - 理论 · 物理学 2009-11-07 Oleg Lebedev , Stephen Morris

We study the minimal version of the supersymmetric standard model with spontaneous CP breaking. In this model, the KM matrix is real and contributions to $\varepsilon$ arise from box diagrams involving squarks. We analyze the region of the…

高能物理 - 唯象学 · 物理学 2010-11-01 Alex Pomarol

A review is given of CP violation in a broad class of models based on supersymmetry, superstrings and brane models. Such models contain typically large CP violating phases which affect a variety of supersymmetric phenomenon at low energies…

高能物理 - 唯象学 · 物理学 2007-05-23 Tarek Ibrahim , Pran Nath

We analyse the CP problem in the context of a supersymmetric extension of the standard model with universal strength of Yukawa couplings. A salient feature of these models is that the CP phases are constrained to be very small by the…

高能物理 - 唯象学 · 物理学 2009-09-25 G. C. Branco , M. E. Gomez , S. Khalil , A. M. Teixeira

CP violations in the kaon system are studied in supersymmetric SU(5) model with right-handed neutrinos. We pay a special attention to the renormalization group effect on the off-diagonal elements of the squark mass matrices. In particular,…

高能物理 - 唯象学 · 物理学 2014-11-17 Naoyuki Akama , Yuichiro Kiyo , Shinji Komine , Takeo Moroi

A review about some recent studies on the determination of the CP-violating complex parameters in supersymmetry at an e^+ e^- linear collider is presented. CP-even observables, like masses, cross sections and branching ratios, can have a…

高能物理 - 唯象学 · 物理学 2007-05-23 S. Hesselbach

It is shown that in R-parity violating models of supersymmetry, the CP violation observed in the kaon system could arise purely from the R-parity violating scalar interactions (A-terms), with no CP violation in the CKM matrix. The direct CP…

高能物理 - 唯象学 · 物理学 2009-10-30 S. A. Abel

CP has a natural embedding in superstring models as a gauge symmetry involving inversion of the compactified space. Hence the source of CP violation could be geometrical. Such models face the problem of how to suppress contributions to…

高能物理 - 唯象学 · 物理学 2007-05-23 Thomas Dent

It is well known that supersymmetric models allow new sources for CP violation that arise from soft supersymmetry breaking terms. If unsuppressed, these new CP-violating phases would give too large a neutron electric dipole moment. We…

高能物理 - 唯象学 · 物理学 2015-06-25 Kiwoon Choi

We discuss the possibility of observing $CP$ violation predicted by the supersymmetric standard model.

高能物理 - 唯象学 · 物理学 2007-05-23 Yoshiki Kizukuri , Noriyuki Oshimo

We investigate the effect of supersymmetric CP violating phases on the inclusive decay B\to X_d\gamma. Although such a decay contains a large background from B\to X_s\gamma, if isolated it may exhibit sizeable CP violation, both in the…

高能物理 - 唯象学 · 物理学 2016-09-06 A. G. Akeroyd , Y. -Y. Keum , S. Recksiegel

We address the question of whether the CP violating phase in the CKM mixing matrix can be the only source of all CP violation. We show that in supersymmetric models with new flavour structure beyond the Yukawa matrices, the CKM phase can…

高能物理 - 唯象学 · 物理学 2015-06-25 Shaaban Khalil , Veronica Sanz

We study a rate asymmetry in the inclusive decay $\Bsgamma$, assuming the supersymmetric standard model based on N=1 supergravity. A complex coefficient $A$ for scalar-trilinear couplings is the source of CP violation, which is contained in…

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

Models that combine Abelian horizontal symmetries and spontaneous CP violation can (i) explain the smallness and hierarchy in quark parameters; (ii) satisfactorily suppress supersymmetric contributions to flavor changing neutral current…

高能物理 - 唯象学 · 物理学 2009-10-28 Yosef Nir , Riccardo Rattazzi

Effects of CP violation on the supersymmetric electroweak correction to the $\rho$ parameter are investigated. To avoid the EDM constraints, we require that arg$(\mu)<10^{-2}$ and the non-universal trilinear couplings $A_f=(0,0,A_0)$ and…

高能物理 - 唯象学 · 物理学 2011-01-27 Sin Kyu Kang , Jung Dae Kim

We analyse the CP problem in the context of a supersymmetric extension of the standard model with universal strength of Yukawa couplings. In these models we find a small amount of CP violation from the usual CKM mechanism and therefore a…

高能物理 - 唯象学 · 物理学 2007-05-23 A. M. Teixeira , G. C. Branco , M. E. Gomez , S. Khalil
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