arXiv subjects

M. Doui

Publications and source records attributed to M. Doui.

2 recordsLinked to original sources

arXiv1996

Tensor Charge of the Nucleon in Lattice QCD

First results of lattice QCD simulation on the nucleon tensor-charge $δq$ are presented. From the quenched QCD simulations with the Wilson quark action at $β= 5.7$ on a 16$^3\times$ 20 lattice and on a $12^3\times 20$ lattice, we find (i) the connected part $δq_{con.}$ is determined with small statistical error, (ii) the disconnected part $δq_{dis.}$, which violates the OZI rule, is consistent with zero, and (iii) the flavor-singlet tensor charge $ δΣ(μ^2 = 2 {\rm GeV}^2) = δu + δd + δs$ takes 0.562(88) at $β=5.7$, which is in contrast with the flavor-singlet axial charge $ΔΣ= 0.1-0.3$.

hep-lat↗

arXiv1996

Tensor Charge of the Nucleon on the Lattice

Tensor charge of the nucleon, which will be measured in Drell-Yan processes in polarized proton-proton collisions at RHIC, are studied in quenched lattice QCD simulation. On the 16$^3\times$ 20 lattice with $β=5.7$, connected parts of the tensor charge are determined with small statistical error, while the disconnected parts are found to be small with relatively large error bars. Flavor-singlet tensor charge ($δΣ= δu + δd + δs$) is not suppressed as opposed to the flavor singlet axial charge ($ΔΣ= Δu + Δd + Δs$).

hep-lat↗