6 citations · 6 across the 3 of their papers we have counts for
8 papers
Quark-hadron duality for heavy meson mixings in the 't Hooft model
Hiroyuki Umeeda
We study local quark-hadron duality and its violation for the , and mixings in the 't Hooft model, offering a laboratory to t…
QCD sum rules with spectral densities solved in inverse problems
Hsiang-nan Li, Hiroyuki Umeeda
We construct QCD sum rules for nonperturbative studies without assuming the quark-hadron duality for the spectral density at low energy on the hadron side. Instead, both resonance…
Vacuum polarization contribution to muon as an inverse problem
Hsiang-nan Li, Hiroyuki Umeeda
We analyze the electromagnetic current correlator at an arbitrary photon invariant mass by exploiting its associated dispersion relation. The dispersion relation is turned in…
meson mixing as an inverse problem
Hsiang-nan Li, Hiroyuki Umeeda, Fanrong Xu +1
We calculate the parameters and for the meson mixing in the Standard Model by considering a dispersion relation between them. The dispersion relation for a fictitious c…
Hidden relations in three generation seesaw model with Dirac mass matrix of four-zero texture
Takuya Morozumi, Yusuke Shimizu, Hiroyuki Umeeda +1
We present predictions for CP violating phases of the Type-I seesaw model with four-zero textures on the Dirac mass matrix. For the four-zero textures, the effective low energy Maj…
Direct CP Violation in Cabibbo-Favored Charmed Meson Decays and in Model
Naoyuki Haba, Hiroyuki Umeeda, Toshifumi Yamada
Since the standard model contribution is virtually absent, any observation of direct CP violation in the Cabibbo-favored charmed meson decays would be evidence of new physics. In t…