4 papers
One Loop Supersymmetric QCD Radiative Corrections to the top quark production in collisions
S. Alam, K. Hagiwara, S. Matsumoto
The purpose of this note is to give the one loop radiative corrections to the top quark pair production in the annihilation at the Fermilab Tevatron in the context of th…
Constraints on New Physics in the Electroweak Bosonic Sector from Current Data and Future Experiments
K. Hagiwara, S. Matsumoto, R. Szalapski
Extensions of the Standard Model which involve a new scale, , may, for energies sufficiently small compared to this new scale, be expressed in terms of operators with energy dim…
Gluon and Charm Distributions in the Photon
K. Hagiwara, T. Izubuchi, M. Tanaka +1
We study systematically the sensitivity of the photon structure function data on the gluon contents of the photon, by using the leading order Altarelli--Parisi (AP) equations. Char…
Consequences of a Possible Di-Gamma Resonace at TRISTAN
K. Hagiwara, S. Matsumoto, M. Tanaka
If high mass di-gamma events observed at LEP are due to the production of a di-gamma resonance via its leptonic coupling, its consequences can be observed at TRISTAN. We find that…