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Effective theories for dark matter nucleon scattering

A bstractWe reformulate the calculation of the dark matter-nucleon scattering cross sections based on the method of effective field theories. We assume that the scatterings are induced by the… Expand

Gluon contribution to dark matter direct detection

- J. Hisano, Koji Ishiwata, N. Nagata
- Physics
- 15 July 2010

In this article we have calculated the spin-independent cross section of nucleon-dark matter scattering process at loop level, which is relevant to dark matter direct detection. Paying particular… Expand

Higgsino dark matter in high-scale supersymmetry

A bstractWe study a supersymmetric (SUSY) Standard Model in which a Higgsino is light enough to be dark matter, while the other SUSY particles are much heavier than the weak scale. We carefully treat… Expand

Direct detection of electroweak-interacting dark matter

- J. Hisano, Koji Ishiwata, N. Nagata, Tomohiro Takesako
- Physics
- 1 April 2011

Assuming that the lightest neutral component in an SU(2)L gauge multiplet is the main ingredient of dark matter in the universe, we calculate the elastic scattering cross section of the dark matter… Expand

Decoupling can revive minimal supersymmetric SU(5)

- J. Hisano, Daiki Kobayashi, Takumi Kuwahara, N. Nagata
- Physics
- 12 April 2013

A bstractWe revisit proton decay via the color-triplet Higgs multiplets in the minimal supersymmetric grand unified model with heavy sfermions. Although the model has been believed to be excluded due… Expand

Reevaluation of Neutron Electric Dipole Moment with QCD Sum Rules

- J. Hisano, Jeong Yong Lee, N. Nagata, Y. Shimizu
- Physics
- 12 April 2012

We study the neutron electric dipole moment in the presence of the CP-violating operators up to the dimension five in terms of the QCD sum rules. It is found that the OPE calculation is robust when… Expand

QCD effects on direct detection of wino dark matter

- J. Hisano, Koji Ishiwata, N. Nagata
- Physics
- 3 April 2015

A bstractWe complete the calculation of the wino-nucleon scattering cross section up to the next-to-leading order in αs. We assume that the other sparticles are decoupled and wino interacts with the… Expand

A Visible QCD Axion from an Enlarged Color Group

- T. Gherghetta, N. Nagata, M. Shifman
- Physics
- 4 April 2016

We consider the possibility of an enlarged QCD color group, SU(3+$N^\prime$) spontaneously broken to SU(3)$_c\times$SU($N^\prime$) with extra vector-like quarks transforming in the fundamental… Expand

A complete calculation for direct detection of Wino dark matter

- J. Hisano, Koji Ishiwata, N. Nagata
- Physics
- 23 April 2010

Abstract In the anomaly-mediated supersymmetry (SUSY) breaking scenario, neutral gaugino of SU ( 2 ) L multiplet, Wino, can be the lightest SUSY particle and become a candidate for dark matter. We… Expand

Low-scale D -term inflation and the relaxion mechanism

- J. Evans, T. Gherghetta, N. Nagata, M. Peloso
- Physics
- 12 April 2017

We present a dynamical cosmological solution that simultaneously accounts for the early inflationary stage of the Universe and solves the supersymmetric little hierarchy problem via the relaxion… Expand

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