The 34th International Symposium on Lattice Field Theory (Lattice 2016)

Jul 24 – 30, 2016
Highfield Campus, University of Southampton
Europe/London timezone

Double Parton Distributions of the Pion

Jul 29, 2016, 5:30 PM
20m
Building B2a Room 2077 (Highfield Campus, University of Southampton)

Speaker

Mr Christian Zimmermann (University of Regensburg)

Description

The effects of double hard interactions are no longer negligible at energy scales reached at the LHC. Double parton scattering (DPS) processes are often described by taking the product of two single parton scattering processes assuming that interference effects are very small. We calculate four point functions (4pt-functions), which appear in the the DPS cross section, employing lattice techniques. We consider a pion at rest and test the validity of the afore-mentioned factorization assumption by convoluting two pion form factors and comparing the result to the 4pt data. For our calculations we use a $N_f = 2$ gauge ensemble on a $40^3 \times 64$ lattice, with lattice spacing $a = 0.071 \mathrm{fm}$ and pion mass $m_{\pi} = 288.8 \mathrm{MeV}$.

Primary author

Mr Christian Zimmermann (University of Regensburg)

 Slides