5 papers
Flavour asymmetry of antiquarks in nucleon and nucleus
WenHao Ma, Siqi Yang, Mingzhe Xie +3
Over the years, comprehensive experiments have shown a fact that the nucleons, such as the proton and neutron, are formed by not only the "valence" up and down quarks which were th…
Improved Hessian Method in Global Analysis of Parton Distribution Functions
Wenxiao Zhan, Siqi Yang, Minghui Liu +3
The Hessian method is widely applied in the global analysis of parton distribution functions (PDFs), which uses a set of orthogonal eigenvectors to give predictions of a physical o…
Relative difference between up and down quark structure of the proton
Mingzhe Xie, Siqi Yang, Wenhao Ma +3
We presen a novel determination of the down-to-up composition ratio using the forward-backward asymmetry observed in the proton-proton collisions at the LHC. This method offers uni…
A -ratio observable for studies of intrinsic transverse momentum of partons from Drell-Yan spectra
Wenxiao Zhan, Siqi Yang, Minghui Liu +2
The determination of the intrinsic transverse momentum distribution of partons is central both for applications of parton shower Monte Carlo generators and for QCD studies of trans…
Coarse-grained binning in Drell-Yan transverse momentum spectra
Wenxiao Zhan, Siqi Yang, Minghui Liu +2
We report a study of the determination of the intrinsic transverse momentum of partons, the intrinsic , from the dilepton transverse momentum in Drell-Yan (DY) productio…