Towards a Lattice Calculation of ∆q and Δq *
نویسندگان
چکیده
Towards a lattice calculation of ∆q and δq ∗ S. Capitani, M. Göckeler, R. Horsley, H. Perlt, D. Petters f , D. Pleiter f , P. E. L. Rakow, G. Schierholz , A. Schiller and P. Stephenson Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Germany Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany Institut für Physik, Humboldt-Universität zu Berlin, D-10115 Berlin, Germany Institut für Theoretische Physik, Universität Leipzig, D-04109 Leipzig, Germany Deutsches Elektronen-Synchrotron DESY and NIC, D-15735 Zeuthen, Germany Institut für Theoretische Physik, Freie Universität Berlin, D-14195 Berlin, Germany Dipartimento di Fisica, Università degli Studi di Pisa e INFN, Sezione di Pisa, 56100 Pisa, Italy
منابع مشابه
ar X iv : h ep - l at / 0 01 10 11 v 1 1 N ov 2 00 0 1 Domain wall fermion calculation of nucleon
We present a preliminary domain-wall fermion lattice-QCD calculation of isovector vector and axial charges, g V and g A , of the nucleon. Since the lattice renormalizations, Z V and Z A , of the currents are identical with DWF, the lattice ratio (g A /g V ) directly yields the continuum value. Indeed Z V determined from the matrix element of the vector current agrees closely with Z A from a non...
متن کاملIntegrals over Products of Distributions and Coordinate Independence of Zero-Temperature Path Integrals
– In perturbative calculations of quantum-statistical zero-temperature path integrals in curvilinear coordinates one encounters Feynman diagrams involving multiple temporal integrals over products of distributions, which are mathematically undefined. In addition, there are terms proportional to powers of Dirac δ-functions at the origin coming from the measure of path integration. We give simple...
متن کاملCalculation of Friction Coefficient and Analysis of Fluid Flow in a Stepped Micro-Channel for Wide Range of Knudsen Number Using Lattice Boltzmann (MRT) Method
Micro scale gas flows has attracted significant research interest in the last two decades. In this research, the fluid flow of gases in the stepped micro-channel at a wide range of Knudsen number has been analyzed with using the Lattice Boltzmann (MRT) method. In the model, a modified second-order slip boundary condition and a Bosanquet-type effective viscosity are used to consider the veloci...
متن کاملComprehensive Evaluation of Anterior Corneal Change in Asphericity Calculated by the Tangential Radius of Curvature after LASIK
To evaluate the change in the anterior corneal asphericity (ΔQ) comprehensively calculated using the tangential radius (rt ) after LASIK. Forty-two right eyes were evaluated using the Orbscan II corneal topographer. The pre- and postoperative Q-values of the flat principal semimeridians calculated by the sagittal radius were compared to those by the tangential radius. The Q-value of each semime...
متن کاملTransverse Double-Spin Asymmetries for Muon Pair Production in pp Collisions
We calculate the rapidity dependence of the transverse double-spin asymmetry for the Drell-Yan process to next-to-leading order in the strong coupling. Input transversity distributions are obtained by saturating the Soffer inequality at a low hadronic mass scale. Results for the polarized Bnl-Rhic proton-proton collider and the proposed Hera-~ N fixed-target experiment are presented, and the in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999