Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Jiro Kodaira"'
Publikováno v:
Physics Letters B. 662:139-149
We discuss the Drell–Yan process at a measured transverse-momentum Q T of the produced lepton pair in collisions of transversely polarized protons and antiprotons, to be observed at the proposed spin experiments at GSI. The large logarithmic contri
Publikováno v:
Nuclear Physics B. 777:203-225
We calculate the double transverse-spin asymmetries, $\aqt$, in transversely polarized Drell-Yan process at the transverse-momentum $Q_T$ of the produced lepton pair. We perform all-order resummation of the logarithmically enhanced contributions in t
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 157:91-95
In the heavy-quark limit, the decay spectrum for radiative and semileptonic inclusive B-meson decays are described by a structure function, i.e. the shape function. We study the operator structure of the shape function, taking into account the QCD ra
Publikováno v:
Progress of Theoretical Physics. 115:667-672
We discuss the transverse momentum Q_T distribution of Drell-Yan pair, produced in collisions of transversely polarized protons. We calculate the transversely polarized Drell-Yan cross section up to order \alpha_s in the dimensional regularization sc
Publikováno v:
Progress of Theoretical Physics. 113:183-198
In the heavy-quark limit, the decay spectrum for radiative and semileptonic inclusive B-meson decays is determined by a universal structure function, i.e. the shape function. We study the constraints on the bilocal heavy-quark operator for the shape
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 135:19-23
We calculate the transversely polarized Drell-Yan process in the dimensional regularization scheme. The q T distribution of virtual photon is also discussed taking into account soft gluon effects.
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 135:56-60
We present an operator analysis of the light-cone structure function for inclusive B decays in the heavy quark limit. Using heavy quark symmetry and the HQET equations of motion, we derive non-perturbative constraints between the light-cone structure
Autor:
Jiro Kodaira, Cong-Feng Qiao
Publikováno v:
Physics Letters B. 565:146-152
The double spin asymmetry for exclusive $J/\psi$ pair production in the polarized $p-p$ collisions at RHIC is investigated. Our study shows that the asymmetry in this process is measurable at RHIC-SPIN experiments in the near future, and, hence it ca
Autor:
Jiro Kodaira
Publikováno v:
Nuclear Physics A. 721:C135-C142
This talk reviews some recent progress in perturbative QCD towards deeper understanding of the structure of nucleons. We wil put n emphasis on the importance of the higher order calculations and the resummations of the perturbative series within the
Publikováno v:
International Journal of Modern Physics A. 18:1433-1436
We present a systematic study of the B meson light-cone distribution amplitudes which are relevant for the QCD factorization approach for the exclusive B meson decays. We construct representations for the quark-antiquark distribution amplitudes in te