H1 and ZEUS
QCD Analysis of Combined H1 and ZEUS F2c Data
| Figures ||
| Contact ||A. M. Cooper-Sarkar, A. Glazov, K. Lipka, R. Placakyte, V. Radescu|
| Abstract ||A next-to-leading order QCD analysis is performed to the preliminary
combination of the H1 and ZEUS F2c measurements together with the published
HERA inclusive neutral and charged current cross sections.
Different models in variable flavour number scheme were used for the heavy
flavour treatment. The fits are used to estimate the optimal value of the charm quark
mass parameter mc^model within a given heavy flavour scheme.
Depending on the scheme, the optimal values of mc^model range between
1.26 GeV and 1.68 GeV, and are determined with a precision of 0.04 GeV
including statistical, model and parameterisation uncertainties.
The parton distribution functions determined
using the above heavy quark schemes at their optimal values of mc^model are further used to predict
the W± and Z production cross sections at the LHC. Good agreement
between these predictions for the W± and Z cross sections
is observed which allows to reduce the uncertainty
due to the heavy flavour treatment, to below 1.0%.|
| Links ||
H1 and ZEUS combined results List of H1 papers
H1 internal information