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Dynamical parton distributions from DGLAP equations with nonlinear corrections | | Rong Wang
; Xurong Chen
; | | Date: |
7 Sep 2016 | | Abstract: | Determination of proton parton distribution functions is present under the
dynamical parton model assumption by applying DGLAP equations with GLR-MQ-ZRS
corrections. We provide two data sets, referred as IMParton16, which are from
two different nonperturbative inputs. One is the naive three valence quarks
input and the other is three valence quarks with flavor-asymmetric sea
components input. Basically, both data sets are compatible with the
experimental measurements at high scale ($Q^2>2$ GeV$^2$). Furthermore, our
analysis shows that the input with flavor-asymmetric sea components better
reproduce the structure functions at high $Q^2$. Generally, the obtained parton
distribution functions, especially the gluon distribution functions, are the
good options of inputs for simulations of high energy scattering processes. The
analysis is performed under the fixed-flavor number scheme for $n_f=$ 3, 4, 5
and uses the $overline{ ext MS}$ scheme for the running coupling $alpha_s$
and the heavy-quark masses. Both data sets start from very low scales around
0.07 GeV$^2$. These results may shed some lights on the origin of the parton
distributions observed at high $Q^2$. | | Source: | arXiv, 1609.1831 | | Services: | Forum | Review | PDF | Favorites | |
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