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32 papers · 1 filter
Soft Supersymmetry Breaking at Heavy Chiral Threshold
Hiroyuki Matsuura, Hiroaki Nakano, Koichi Yoshioka
We discuss the structure of threshold corrections to soft supersymmetry-breaking parameters at the mass threshold of heavy chiral superfields. Nontrivial dependence on soft paramet…
Single Transverse Spin Asymmetry for Semi-Inclusive Deep Inelastic Scattering
Hisato Eguchi, Yuji Koike, Kazuhiro Tanaka
Establishing the twist-3 formalsim for the single transverse spin asymmetry, we present a complete single-spin-dependent cross section for SIDIS, , associated w…
A New Approach for Single Transverse-Spin Asymmetries from Twist-3 Soft-Gluon Mechanism
Yuji Koike, Kazuhiro Tanaka
A dominant QCD mechanism for the single transverse-spin asymmetry in hard processes is induced by the twist-3 quark-gluon correlations inside nucleon, combined with the soft-gluoni…
Master Formula for Twist-3 Soft-Gluon-Pole Mechanism to Single Transverse-Spin Asymmetry
Yuji Koike, Kazuhiro Tanaka
Perturbative QCD relates the single transverse-spin asymmetries (SSAs) for hard processes at large transverse-momentum of produced particle to partonic matrix elements that describ…
Twist-3 Formalism for Single Transverse Spin Asymmetry Reexamined: Semi-Inclusive Deep Inelastic Scattering
Hisato Eguchi, Yuji Koike, Kazuhiro Tanaka
We study the single spin asymmetry (SSA) for the pion production in semi-inclusive deep inelastic scattering, , in the framework of the collinear factorization.…
Dark Energy and Neutrino Model in SUSY
Ryo Takahashi, Morimitsu Tanimoto
We discuss the effect of the supersymmetry breaking on the Mass Varying Neutrinos(MaVaNs) scenario. Especially, the effect mediated by the gravitational interaction between the hid…