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We analyze the two-loop level $R$-parity violating supersymmetric contribution to the electric and chromoelectric dipole moments of fermions with a lepton and a gaugino in the intermediate state. It is found that this contribution can be…

High Energy Physics - Phenomenology · Physics 2023-11-07 Nodoka Yamanaka

We reexamine the R-parity violating contribution to the fermion electric and chromo-electric dipole moments (EDM and cEDM) in the two-loop diagrams. It is found that the leading Barr-Zee type two-loop contribution is smaller than the result…

High Energy Physics - Phenomenology · Physics 2012-06-20 Nodoka Yamanaka , Toru Sato , Takahiro Kubota

We evaluate the Barr-Zee type two-loop level contribution to the fermion electric and chromo-electric dipole moments with sfermion loop in R-parity violating supersymmetric models. It is found that the Barr-Zee type fermion dipole moment…

High Energy Physics - Phenomenology · Physics 2012-10-25 Nodoka Yamanaka

We calculate a new type of two-loop contributions to the electric dipole moments of the electron and neutron in supersymmetric theories. The new contributions are originated from the potential CP violation in the trilinear couplings of the…

High Energy Physics - Phenomenology · Physics 2009-09-01 Darwin Chang , Wai-Yee Keung , Apostolos Pilaftsis

In the context of supersymmetry, the two-loop Barr-Zee diagrams which induce CP-violating electric dipole moment of electron due to superpartners simultaneously yield CP-conserving magnetic dipole moment of muon. In this paper, we derive…

High Energy Physics - Phenomenology · Physics 2019-03-01 Sibo Zheng

We analyze the neutron electric dipole moment (EDM) in the Minimal Supersymmetric Model with explicit R-parity violating terms. The leading contribution to the EDM occurs at the 2-loop level and is dominated by the chromoelectric dipole…

High Energy Physics - Phenomenology · Physics 2009-09-01 Darwin Chang , We-Fu Chang , Mariana Frank , Wai-Yee Keung

The complete set of Higgs-boson two-loop contributions to electric dipole moments of the electron and neutron is calculated in the minimal supersymmetric standard model. The electric dipole moments are induced by CP-violating trilinear…

High Energy Physics - Phenomenology · Physics 2010-04-21 Apostolos Pilaftsis

We calculate the two-loop contributions to the electric dipole moments of the electron and the neutron mediated by charged Higgs in a generic supersymmetric theories. The new contributions are originated from the potential CP violation in…

High Energy Physics - Phenomenology · Physics 2009-09-01 Darwin Chang , We-Fu Chang , Wai-Yee Keung

A non-universal anomaly free $U(1)_{X}$ extension to the Minimal Supersymmetric Standard Model, consisting of four scalar doublets, four scalar singlets and additional quark and lepton singlets including right-handed and Majorana neutrinos,…

High Energy Physics - Phenomenology · Physics 2021-03-04 J. S. Alvarado , R. Martinez

A minimal supersymmetric version of the Standard Model with complex parameters allows contributions to the weak-electric dipole moments of fermions at the one-loop level. Assuming generation-diagonal trilinear soft-susy-breaking terms and…

High Energy Physics - Phenomenology · Physics 2014-11-17 W. Hollik , J. I. Illana , S. Rigolin , D. Stoeckinger

We compute the complete set of Higgs-mediated chargino-neutralino two-loop contributions to the electric dipole moments (EDMs) of the electron and neutron in the minimal supersymmetric standard model (MSSM). We study the dependence of these…

High Energy Physics - Phenomenology · Physics 2009-01-14 Yingchuan Li , Stefano Profumo , Michael Ramsey-Musolf

Split supersymmetry is characterized by relatively light chargino and neutralino sector and very heavy sfermion sector. We study the consequence of CP violation in this scenario by evaluating two-loop contributions to electric dipole…

High Energy Physics - Phenomenology · Physics 2014-11-18 N. G. Deshpande , J. Jiang

We present the first complete two-loop calculation of the electric and chromo-electric dipole moments of the light quarks and the gluon, as well as contributions to CP-violating lepton-quark interactions, in the unconstrained two-Higgs…

High Energy Physics - Phenomenology · Physics 2025-11-13 Wolfgang Altmannshofer , Joachim Brod , Patipan Uttayarat , Daniil Volkov

The supersymmetric standard model (SSM) has a CP-violating phase in its gauge-Higgs sector. This new source of CP violation induces the electric dipole moments (EDMs) of the neutron and electron at the one-loop level. The same CP-violating…

High Energy Physics - Phenomenology · Physics 2009-10-30 Noriyuki Oshimo

An analysis of electroweak corrections to the anomalous dipole moments of lepton from some special two-loop diagrams where a closed neutralino/chargino loop is inserted into relevant one-loop diagrams of the standard model is presented in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Tai-Fu Feng , Lin Sun , Xiu-Yi Yang

We present a simple analysis that allows us to extract the leading mass dependence of the dipole moment of matter fermions that might be induced by new physics. We present explicit results for the supersymmetric model with broken R-parity…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. M. Godbole , S. Pakvasa , S. D. Rindani , X. Tata

We present the analytical results for the anomalous chromomagnetic moment of a quark at the one-loop and two-loop levels through model-independent parameterizations, considering the external gluon to be off-shell. Then, we consider…

High Energy Physics - Phenomenology · Physics 2024-04-23 Subhadip Bisal

The one-loop Minimal Supersymmetric Standard Model (MSSM) contributions to the weak and electromagnetic dipole form factors of heavy fermions are reviewed. For the $Z$ boson on shell, the weak-magnetic and weak-electric dipole moments of…

High Energy Physics - Phenomenology · Physics 2009-10-31 W. Hollik , J. I. Illana , S. Rigolin , C. Schappacher , D. Stöckinger

Supersymmetric loop corrections induce potentially large CP-violating couplings of the Higgs bosons to nucleons and electrons that do not vanish in the limit of heavy superpartners. The Higgs-mediated CP-odd four-fermion operators are…

High Energy Physics - Phenomenology · Physics 2009-11-07 Oleg Lebedev , Maxim Pospelov

We calculate the one loop corrections to the chromomagnetic dipole moment of the top quark in the framework of the Standard Model, the two Higgs doublet model and the Minimal Supersymmetric Standard Model. In the Standard Model we consider…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. Martinez , J. -Alexis Rodriguez , M. Vargas
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