English
Related papers

Related papers: A Predictive Seesaw Scenario for EDMs

200 papers

We study the lepton electric dipole moments in the framework of the supersymmetric type II seesaw model where the exchange of heavy SU(2)_W triplets generates small neutrino masses. We show that the CP violating phase of the bilinear soft…

High Energy Physics - Phenomenology · Physics 2010-05-12 Toru Goto , Takayuki Kubo , Yasuhiro Okada

We study quark and electron EDMs generated by Yukawa couplings in supersymmetric models with different gauge groups, using the EDM properties under flavour transformations. In the MSSM (or if soft terms are mediated below the unification…

High Energy Physics - Phenomenology · Physics 2009-10-09 Andrea Romanino , Alessandro Strumia

The Standard Model predictions for the hadronic and leptonic electric dipole moments (EDMs) are well far from the present experimental resolutions, thus, the EDMs represent very clean probes of New Physics effects. Especially, within…

High Energy Physics - Phenomenology · Physics 2014-11-18 Junji Hisano , Minoru Nagai , Paride Paradisi

In the framework of seesaw mechanism embedded in the constrained Minimal Supersymmetric Standard Model (cMSSM), phases of neutrino Yukawa coupling, $\mu$-term and $A$-terms can all contribute to the Electric Dipole Moment (EDM) of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. A. Demir , Y. Farzan

Intrinsic EDMs in microscopic systems at a level of sensitivity achievable in experiments under way or foreseen are predicted in supersymmetric unified theories. I describe this and other sources of measurable EDMs and I show how these…

High Energy Physics - Phenomenology · Physics 2015-06-25 Andrea Romanino

In the context of the supersymmetrized seesaw mechanism embedded in the Minimal Supersymmetric Standard Model (MSSM), complex neutrino Yukawa couplings can induce Electric Dipole Moments (EDMs) for the charged leptons, providing an…

High Energy Physics - Phenomenology · Physics 2014-11-18 D. Demir , Y. Farzan

We study the anomalous magnetic and electric dipole moments of charged leptons in supersymmetric low-scale seesaw models with right-handed neutrino superfields. We consider a minimally extended framework of minimal supergravity, by assuming…

High Energy Physics - Phenomenology · Physics 2014-01-15 Amon Ilakovac , Apostolos Pilaftsis , Luka Popov

We study electric dipole moments (EDM) of electron and proton in E(6)--inspired supersymmetric models with an extra U(1) invariance. Compared to the Minimal Supersymmetric Standard Model (MSSM), in addition to offering a natural solution to…

High Energy Physics - Phenomenology · Physics 2008-10-28 Alper Hayreter , Asli Sabanci , Levent Solmaz , Saime Solmaz

We thoroughly discuss a new supersymmetric grand unified scenario of the triplet seesaw mechanism where the exchange of heavy SU(2)_W triplet states generates both neutrino masses and soft supersymmetry breaking terms. This framework,…

High Energy Physics - Phenomenology · Physics 2008-11-26 Filipe R. Joaquim , Anna Rossi

Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the minimal scotogenic model with two singlet fermions, and the…

High Energy Physics - Phenomenology · Physics 2021-04-15 Motoko Fujiwara , Junji Hisano , Chihiro Kanai , Takashi Toma

In the context of supersymmetric seesaw models of neutrino masses with non-degenerate heavy neutrinos, we show that Dirac Yukawa interactions N^c_i (Y_nu)_{ij} L_j H_2 induce large threshold corrections to the slepton soft masses via…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Junji Hisano , Martti Raidal , Yasuhiro Shimizu

In the supersymmetric triplet (type-II) seesaw model, in which a single SU(2)_L-triplet couples to leptons, the high-energy neutrino flavour structure can be directly determined from the low-energy neutrino data. We show that even with such…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. D'Ambrosio , T. Hambye , A. Hektor , M. Raidal , A. Rossi

We analyze the connection between electric dipole moment of the electron and the soft leptogenesis in supersymmetric $B-L$ extension of the standard model. In this model, the $B-L$ symmetry is radiatively broken at TeV scale. Therefore, it…

High Energy Physics - Phenomenology · Physics 2010-04-15 Yuji Kajiyama , Shaaban Khalil , Martti Raidal

We propose a novel supersymmetric unified scenario of the triplet seesaw mechanism where the exchange of the heavy triplets generates both neutrino masses and soft supersymmetry breaking terms. Our framework is very predictive since it…

High Energy Physics - Phenomenology · Physics 2009-11-11 Filipe R. Joaquim , Anna Rossi

The electric dipole moments (EDMs) of the neutron and the electron are reviewed within the framework of the supersymmetric standard model (SSM) based on grand unified theories coupled to N=1 supergravity. Taking into account one-loop and…

High Energy Physics - Phenomenology · Physics 2007-05-23 Mayumi Aoki , Tomoko Kadoyoshi , Akio Sugamoto , Noriyuki Oshimo

Supersymmetric contributions to the neutron electric dipole moment (EDM) are studied taking account of the flavor changing interactions. We found that the gluino contribution is sensitive to the flavor changing interaction. Enhancement of…

High Energy Physics - Phenomenology · Physics 2010-11-05 Gi-Chol Cho , Naoyuki Haba , Minako Honda

We consider the supersymmetric seesaw mechanism induced by the exchange of heavy SU(2)_W triplet states, rather than `right-handed' neutrino singlets, to generate neutrino masses. We show that in this scenario the neutrino flavour structure…

High Energy Physics - Phenomenology · Physics 2009-11-07 Anna Rossi

We study an important contribution to the electric dipole moment (EDM) of the electron (or quarks) at the two-loop level due to the $W$-EDM in the recently proposed scenario of split supersymmetry. This contribution is independent of the…

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

The electric dipole moments (EDMs) of charged leptons are significantly suppressed in standard model. It has been found previously that they are even more severely suppressed in seesaw type models by powers of tiny neutrino masses as far as…

High Energy Physics - Phenomenology · Physics 2014-11-18 Yi Liao

A fully generic treatment of electric dipole moments (EDMs) is presented in the CP-violating and flavor-conserving weak effective field theory (WET) with five flavors of quarks and three flavors of leptons. We systematically analyze leading…

High Energy Physics - Phenomenology · Physics 2024-06-13 Jacky Kumar , Emanuele Mereghetti
‹ Prev 1 2 3 10 Next ›