Split supersymmetry radiates flavor

Baumgart, Matthew; Stolarski, Daniel; Zorawski, Thomas

doi:10.1103/physrevd.90.055001

Cited by 15 publications

(9 citation statements)

References 111 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several other aspects of split supersymmetry, including flavor physics [87,88] and inflation [89] that could have interesting interpretations in the Split Dirac Supersymmetry framework.…”

Section: A Gauge Coupling Unificationmentioning

confidence: 99%

Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter

2014

View full text Add to dashboard Cite

Motivated by the observation that the Higgs quartic coupling runs to zero at an intermediate scale, we propose a new framework for models of split supersymmetry, in which gauginos acquire intermediate scale Dirac masses of ∼ 10 8−11 GeV. Scalar masses arise from one-loop finite contributions as well as direct gravity-mediated contributions. Like split supersymmetry, one Higgs doublet is fine-tuned to be light. The scale at which the Dirac gauginos are introduced to make the Higgs quartic zero is the same as is necessary for gauge coupling unification. Thus, gauge coupling unification persists (nontrivially, due to adjoint multiplets), though with a somewhat higher unification scale 10 17 GeV. The µ-term is naturally at the weak scale, and provides an opportunity for experimental verification. We present two manifestations of Split Dirac Supersymmetry. In the "Pure Dirac" model, the lightest Higgsino must decay through R-parity violating couplings, leading to an array of interesting signals in colliders. In the "Hypercharge Impure" model, the bino acquires a Majorana mass that is one-loop suppressed compared with the Dirac gluino and wino. This leads to weak scale Higgsino dark matter whose overall mass scale, as well as the mass splitting between the neutral components, is naturally generated from the same UV dynamics.We outline the challenges to discovering pseudo-Dirac Higgsino dark matter in collider and dark matter detection experiments.

show abstract

Section: A Gauge Coupling Unificationmentioning

confidence: 99%

Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter

2014

View full text Add to dashboard Cite

show abstract

“…Along this line of idea, there exist a lot of papers, i.e., [1] at one-loop level, [2] at two-loop level, [3] at three-loop level, and [4] at four-loop level. However authors mainly focus on the neutrino sector, but not so many on the quark sector [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Radiatively induced quark and lepton mass model

Nomura

Okada

2016

Physics Letters B

View full text Add to dashboard Cite

We propose a radiatively induced quark and lepton mass model in the first and second generation with extra U (1) gauge symmetry and vector-like fermions. Then we analyze the allowed regions which simultaneously satisfy the FCNCs for the quark sector, LFVs including µ − e conversion, the quark mass and mixing, and the lepton mass and mixing. Also we estimate the typical value for the (g − 2) µ in our model.

show abstract

“…The size of the contribution from each scalar would depend on the detail of models. In fact, we can consider many setups to realize the observed quark mass matrix radiatively in the framework of the Grand Unified Theory [3][4][5][6], Left-Right symmetric models [7][8][9], supersymmetric models [10][11][12][13][14][15][16][17][18][19][20][21], and flavor symmetric models [22][23][24][25][26][27][28]. Our main motivations are, however, to find the connection between DM and the quark mixing in the SM and to look for universal predictions of this kind of model.…”

Section: Setupmentioning

confidence: 99%

Hidden sector behind the CKM matrix

Okawa

Omura

2017

Phys. Rev. D

View full text Add to dashboard Cite

The small quark mixing, described by the Cabibbo-Kobayashi-Maskawa (CKM) matrix in the Standard Model, may be a clue to reveal new physics around the TeV scale. We consider a simple scenario that extra particles in a hidden sector radiatively mediate the flavor violation to the quark sector around the TeV scale and effectively realize the observed CKM matrix. The lightest particle in the hidden sector, whose contribution to the CKM matrix is expected to be dominant, is a good dark matter (DM) candidate. There are many possible setups to describe this scenario, so that we investigate some universal predictions of this kind of model, focusing on the contribution of DM to the quark mixing and flavor physics. In this scenario, there is an explicit relation between the CKM matrix and flavor violating couplings, such as four-quark couplings, because both are radiatively induced by the particles in the hidden sector. Then, we can explicitly find the DM mass region and the size of Yukawa couplings between the DM and quarks, based on the study of flavor physics and DM physics. In conclusion, we show that DM mass in our scenario is around the TeV scale, and the Yukawa couplings are between O(0.01) and O(1). The spin-independent DM scattering cross section is estimated as O(10 −9 ) [pb]. An extra colored particle is also predicted at the O(10) TeV scale.

show abstract

Split supersymmetry radiates flavor

Cited by 15 publications

References 111 publications

Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter

Split Dirac supersymmetry: An ultraviolet completion of Higgsino dark matter

Radiatively induced quark and lepton mass model

Hidden sector behind the CKM matrix

Contact Info

Product

Resources

About