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Computation of parton distributions from the quasi-PDF approach at the physical point
Alexandrou, C Bacchio, S Cichy, K Constantinou, M Hadjiyiannakou, K Jansen, K Koutsou, G Scapellato, A Steffens, F
Alexandrou, C
Bacchio, S
Cichy, K
Constantinou, M
Hadjiyiannakou, K
Jansen, K
Koutsou, G
Scapellato, A
Steffens, F
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Conference Proceeding
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2018-03-26
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10.1051/epjconf/201817514008
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© The Authors, published by EDP Sciences, 2018. We show the first results for parton distribution functions within the proton at the physical pion mass, employing the method of quasi-distributions. In particular, we present the matrix elements for the iso-vector combination of the unpolarized, helicity and transversity quasi-distributions, obtained with Nf = 2 twisted mass cloverimproved fermions and a proton boosted with momentum p→ = 0.83 GeV. The momentum smearing technique has been applied to improve the overlap with the proton boosted state. Moreover, we present the renormalized helicity matrix elements in the RI' scheme, following the non-perturbative renormalization prescription recently developed by our group.
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