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8 papers · 2 filters
Possible Evidence for a Chiral Particle B_0chi, Scalar Meson in the B Meson System
Daiki Ito, Muneyuki Ishida, Shin Ishida +3
In the covariant level-classification scheme of hadrons proposed recently, the existence of "chiral particles", scalar and axial-vector mesons as the partners of the ground-state p…
Possible Evidence for a Chiral Particle D_1chi, Axial-Vector in the D Meson System
Daiki Ito, Muneyuki Ishida, Shin Ishida +3
In the covariant level-classification scheme of hadrons proposed recently, the existence of "chiral particles", scalar and axial-vector mesons as the partners of the ground-state p…
CP, T and CPT Violations in the K^0 - bar{K^0} System -- Present Status --
Y. Takeuchi, S. Y. Tsai
Possible violation of CP, T and CPT symmetries in the K^0 - bar{K^0} system is studied in a way as phenomenological and comprehensive as possible. For this purpose, we first introd…
Upper and Lower Limits on Neutralino WIMP Mass and Spin--Independent Scattering Cross Section, and Impact of New (g-2)_{mu} Measurement
Yeong Gyun Kim, Takeshi Nihei, Leszek Roszkowski +1
We derive the allowed ranges of the spin--independent interaction cross section $\sigsip$ for the elastic scattering of neutralinos on proton for wide ranges of parameters of the g…
Exact Cross Sections for the Neutralino-Slepton Coannihilation
Takeshi Nihei, Leszek Roszkowski, Roberto Ruiz de Austri
Coannihilation processes provide an important additional mechanism for reducing the density of stable relics in the Universe. In the case of the stable lightest neutralino of the M…
U(12) A New Symmetry Possibly Realizing in Hadron Spectroscopy
Shin Ishida, Muneyuki Ishida
Starting from the multi-local Klein-Gordon equations with Lorentz-scalar squared-mass operator we give a covariant quark representation of the general composite mesons and baryons…