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From the 1 of 512 papers with an AI index.

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20022026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing 2021 · hep-phShow all

6 papers · 2 filters

hep-ph2021★ 35 cited

Modular symmetry in the SMEFT

Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1

We study the modular symmetric standard-model effective field theory. We employ the stringy Ansatz on coupling structure that 4-point couplings of matter fields are writt…

hep-ph2021★ 11 cited

Twist-3 Gluon Fragmentation Contribution to Polarized Hyperon Production in Unpolarized Proton-Proton Collision

Yuji Koike, Kenta Yabe, Shinsuke Yoshida

Understanding the origin and mechanism of the transverse polarization of hyperons produced in unpolarized proton-proton collision, , has been one of the long-st…

hep-ph2021★ 15 cited

Electron EDM arising from modulus in the supersymmetric modular invariant flavor models

Morimitsu Tanimoto, Kei Yamamoto

The electric dipole moment (EDM) of electron is studied in the supersymmetric modular invariant theory of flavors with CP invariance. The CP symmetry of the lepton sector…

hep-ph2021★ 4 cited

Neutrino masses and gravitational wave background

Takehiko Asaka, Hisashi Okui

We consider the Standard Model with three right-handed neutrinos to generate tiny neutrino masses by the seesaw mechanism. Especially, we investigate the case when one right-handed…

hep-ph2021★ 16 cited

Hiding neutrinoless double beta decay in the minimal seesaw mechanism

Takehiko Asaka, Hiroyuki Ishida, Kazuki Tanaka

We present a possibility that the neutrinoless double beta decay can be hidden in the minimal seesaw mechanism where the standard model is extended by two right-handed neutrinos wh…

hep-ph2021★ 70 cited

Spontaneous CP violation by modulus in model of lepton flavors

Hiroshi Okada, Morimitsu Tanimoto

We discuss the modular invariant model of leptons combining with the generalized CP symmetry. In our model, both CP and modular symmetries are broken spontaneously by the vac…