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First results with twisted mass fermions towards the computation of parton distribution functions on the lattice

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arxiv 1411.0891 v1 pith:P4HZ53CV submitted 2014-11-04 hep-lat hep-ph

First results with twisted mass fermions towards the computation of parton distribution functions on the lattice

Constantia Alexandrou , Krzysztof Cichy , Vincent Drach , Elena Garcia-Ramos , Kyriakos Hadjiyiannakou , Karl Jansen , Fernanda Steffens , Christian Wiese This is my paper
classification hep-lat hep-ph
keywords distributionfirstfunctionslatticemethodpartonresultsapplication
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report on our exploratory study for the evaluation of the parton distribution functions from lattice QCD, based on a new method proposed in Ref.~arXiv:1305.1539. Using the example of the nucleon, we compare two different methods to compute the matrix elements needed, and investigate the application of gauge link smearing. We also present first results from a large production ensemble and discuss the future challenges related to this method.

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