Pdf from lattice
- 👤 Speaker: Fernanda Steffens (DESY Zeuthen)
- 📅 Date & Time: Tuesday 25 October 2016, 15:00 - 16:00
- 📍 Venue: Rutherford Seminar Room B
Abstract
We provide a high statistics analysis of the x-dependence of the bare unpolarized, helicity and transversity iso-vector parton distribution functions (PDFs) from lattice calculations employing (maximally) twisted mass fermions. The x-dependence of the calculated PDFs resembles those of the phenomenological parameterizations, a feature that makes this approach promising despite the lack of a full renormalization program for them. Furthermore, we apply momentum smearing for the relevant matrix elements to compute the lattice PDFs and find a large improvement factor when compared to conventional Gaussian smearing. This allows us to extend the lattice computation of the distributions to higher values of the nucleon momentum.
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Fernanda Steffens (DESY Zeuthen)
Tuesday 25 October 2016, 15:00-16:00