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We study the CP violation and the CP phase of quark mass matrices in modular flavor symmetric models. The CP symmetry remains at $\tau = e^{2 \pi i/3}$ by a combination of the $T$-symmetry of the modular symmetry. However, the $T$-symmetry…

高能物理 - 唯象学 · 物理学 2022-06-20 Shota Kikuchi , Tatsuo Kobayashi , Morimitsu Tanimoto , Hikaru Uchida

We present a model which employs $CP\times Z_3$ symmetries where quark mixing and charged leptons masses are explained by following some texture. To achieve neutrino mass and mixing, we write a non-renormalizable Lagrangian using type-II…

高能物理 - 唯象学 · 物理学 2022-07-13 Joy Ganguly

The radiatively induced Lorentz and CPT violating Chern-Simons terms in QED is calculated based on the recently developed loop regularization method [Y.L. Wu, Int.J.Mod.Phys.A18 (2003) 5363, hep-th/0209021; Y.L. Wu, Mod.Phys.Lett.A19 (2004)…

高能物理 - 唯象学 · 物理学 2008-11-26 Yong-Liang Ma , Yue-Liang Wu

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…

高能物理 - 唯象学 · 物理学 2009-11-13 Andres Hernandez , Thomas Konstandin , Michael G. Schmidt

This series of five lectures describes aspects of CP violation, emphasizing its description within the standard electroweak model. After discussing the kaon system, the only place in which CP violation has been seen so far, we turn to the…

高能物理 - 唯象学 · 物理学 2007-05-23 Jonathan L. Rosner

Quantum field theory has been established on symmetries, but their fundamentality could be limited as practical calculations of physical observations are not based on interacting Lagrangian. The requirement of Lorentz invariance on vacuum…

高能物理 - 唯象学 · 物理学 2007-05-23 J. C. Yoon

We present a review of general picture in the sector of electroweak symmetry breaking with the CP-violation in the heavy quark interactions.

高能物理 - 唯象学 · 物理学 2007-05-23 V. V. Kiselev

We study a model with partial quark-lepton universality that can naturally arise in grand unified theories. We find that constraints on the model can be reduced to a single condition on the Dirac CP phase $\delta$ in the neutrino sector.…

高能物理 - 唯象学 · 物理学 2015-10-02 Jiajun Liao , D. Marfatia , K. Whisnant

The study of CP violation in $B$-meson decays has already reached a high level of precision, which will be pushed even higher in the future era of Belle-II and the LHCb upgrade. %Important probes of CP violation are the $B_d^0$ and $B_s^0$…

高能物理 - 唯象学 · 物理学 2018-07-24 K. Keri Vos

While $CP$ violation has never been observed in the strong interactions, the QCD Lagrangian admits a $CP$-odd topological interaction proportional to the so called $\theta$ angle, which weighs the contributions to the partition function…

高能物理 - 理论 · 物理学 2022-09-19 Wen-Yuan Ai , Juan S. Cruz , Bjorn Garbrecht , Carlos Tamarit

We determine the phase diagram and pion spectrum for Wilson and twisted-mass fermions in the presence of non-degeneracy between the up and down quark and discretization errors, using Wilson and twisted-mass chiral perturbation theory. We…

高能物理 - 格点 · 物理学 2014-12-03 Derek P. Horkel , Stephen R. Sharpe

We analyse the recent controversy on a possible Chern-Simons like term generated through radiative corrections in QED with a CPT violating term : we prove that, if the theory is correctly defined through Ward identities and normalisation…

高能物理 - 理论 · 物理学 2009-10-31 Guy Bonneau

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

Our knowledge of quark-flavor physics and CP violation increased tremendously over the past five years. It is confirmed that the Standard Model correctly describes the dominant parts of the observed CP-violating and flavor-changing…

高能物理 - 唯象学 · 物理学 2008-11-26 Andreas Hocker , Zoltan Ligeti

A recent work combined the popular left-right parity (LR) and Peccei-Quinn (PQ) symmetries to explain the alignment in quark masses. Since axions may not exist, we break PQ softly and discover a new solution to the strong CP problem.…

高能物理 - 唯象学 · 物理学 2018-05-04 Ravi Kuchimanchi

We review the current status of the data on neutrino masses and lepton mixing and the prospects for measuring the CP-violating phases in the lepton sector. The possible connection between low energy CP violation encoded in the Dirac and…

高能物理 - 唯象学 · 物理学 2018-03-05 C. Hagedorn , R. N. Mohapatra , E. Molinaro , C. C. Nishi , S. T. Petcov

The concept of QCD sum rules is extended to bound states composed of particles with finite mass such as scalar quarks or strange quarks. It turns out that mass corrections become important in this context. The number of relevant corrections…

高能物理 - 唯象学 · 物理学 2015-06-25 M. Meyer-Hermann , A. Schäfer , W. Greiner

I review briefly various models and ways of Quantum-Gravity induced CPT violation, and discuss in some detail their phenomenology, in particular precision CPT tests in neutral mesons, and hydrogen/antihydrogen spectroscopy. As I shall…

高能物理 - 唯象学 · 物理学 2009-11-10 Nick E. Mavromatos

The recent established large $\theta_{13}$ in neutrino mixing provides an optimistic possibility for the investigation of the CP violation, therefore it is necessary to study the CP-violating phase $\delta_{\rm CP}$ in detail. Based on the…

高能物理 - 唯象学 · 物理学 2014-10-31 Xinyi Zhang , Bo-Qiang Ma

We study the possibility of identifying the CP violating phases in the PMNS mixing matrix in the lepton sector and also that in the CKM mixing matrix in the quark sector with the phase responsible for the spontaneous CP violation in the…

高能物理 - 唯象学 · 物理学 2011-03-21 Xiao-Gang He , Lu-Hsing Tsai