29 citations · 29 across the 6 of their papers we have counts for
6 papers
Singular Value Decomposition, Hessian Errors, and Linear Algebra of Non-parametric Extraction of Partons from DIS
Mehrdad Goshtasbpour
By singular value decomposition (SVD) of a numerically singular Hessian matrix and a numerically singular system of linear equations for the experimental data (accumulated in the r…
Commuting Matrix Solutions of PQCD Evolution Equations
Mehrdad Goshtasbpour, Seyed Ali Shafiei
A method of obtaining parton distributions directly from data is revealed in this series. In the process, the first step would be developing appropriate matrix solutions of the evo…
II. Non-commuting Matrix Solution of DGLAP; Data Leading to Partons Directly without Parameterization
M. Goshtasbpour, M. Zandi
Dominant present path for determination of quarks and gluon distribution functions from data is based on pre-assumed form of parameters. Here, an alternative direct, or non-paramet…
Phenomenology of g_1(x) in the Observed Small-x Region
Mehrdad Goshtasbpour, Philip G. Ratcliffe
We examine the behaviour of the polarised structure function data for g_1(x) in the region of small x (~0.01 to 0.1) for the various available targets (proton, neutron and deuteron…
x-Dependent Polarized Parton Distributions
Lionel E. Gordon, Mehrdad Goshtasbpour, Gordon P. Ramsey
Using QCD motivated and phenomenological considerations, we construct x- dependent polarized parton distributions, which evolve under GLAP evolution, satisfy DIS data and are withi…
Nucleon Spin Distributions From Recent SMC, SLAC and DESY Data
Gordon P. Ramsey, Mehrdad Goshtasbpour
We have extracted polarized nucleon distributions from recent data at CERN, SLAC and DESY. The flavor-dependent valence and sea quark spin distributions are determined for each exp…