Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Yan, Mengshi"'
Parton distribution functions (PDFs) form an essential part of particle physics calculations. Currently, the most precise predictions for these non-perturbative functions are generated through fits to global data. A problem that several PDF fitting g
Externí odkaz:
http://arxiv.org/abs/2406.01664
We study the impact of lattice data on the determination of the strangeness asymmetry distribution $s_-(x) \equiv s(x) - {\bar s}(x)$ in the general CTEQ-TEA global analysis of parton distribution functions (PDFs) of the proton. Firstly, we find that
Externí odkaz:
http://arxiv.org/abs/2211.11064
The separation of the connected and disconnected sea partons, which were uncovered in the Euclidean path-integral formulation of the hadronic tensor, is accommodated with an alternative parametrization of the non-perturbative parton distribution func
Externí odkaz:
http://arxiv.org/abs/2206.02431
Publikováno v:
Phys.Rev.D 107 (2023) 034008
In global QCD fits of parton distribution functions (PDFs), a large part of the estimated uncertainty on the PDFs originates from the choices of parametric functional forms and fitting methodology. We argue that these types of uncertainties can be un
Externí odkaz:
http://arxiv.org/abs/2205.10444
In this paper, we present a CT18 PDFs fitted with Leading-Order QCD perturbation theory. The CT18 LO PDFs is obtained within the general CT18 framework, along with two additional treatments being imposed to improve the quality of the fit. We take the
Externí odkaz:
http://arxiv.org/abs/2205.00137
We study the impact of the lattice data on the determination of the strangeness asymmetry distribution $s_-(x) \equiv s(x) - {\bar s}(x)$ in the general CTEQ-TEA global analysis of parton distribution functions (PDFs) of the proton. Firstly, we find
Externí odkaz:
http://arxiv.org/abs/2204.07944
Autor:
Wu, Meiqi, Ren, Chao, Mao, Chenhui, Dong, Liling, Li, Bo, Yang, Xueqian, Huang, Zhenghai, Zhang, Haiqiong, Li, Yuying, Yan, Mengshi, Ge, Qi, Wu, Runze, Feng, Feng, Cui, Mengchao, Gao, Jing, Huo, Li
Publikováno v:
In NeuroImage September 2024 298
Autor:
Guzzi, Marco, Xie, Keping, Hou, Tie-Jiun, Nadolsky, Pavel, Schmidt, Carl, Yan, Mengshi, Yuan, C. -P.
We discuss recent CTEQ-TEA group activities after the publication of the CT18 global analysis of parton distribution functions (PDFs) in the proton. In particular, we discuss a new calculation for the photon content in the proton, termed as CT18lux a
Externí odkaz:
http://arxiv.org/abs/2110.11495
The separation of the connected and disconnected sea partons, which were uncovered in the Euclidean path-integral formulation of the hadronic tensor, is accommodated with the CT18 parametrization of the global analysis of the parton distribution func
Externí odkaz:
http://arxiv.org/abs/2108.06768
Autor:
Guzzi, Marco, Hobbs, T. J., Hou, Tie-Jiun, Jing, Xiaoxian, Xie, Keping, Courtoy, Aurore, Dulat, Sayipjamal, Gao, Jun, Huston, Joey, Nadolsky, Pavel M., Schmidt, Carl, Sitiwaldi, Ibrahim, Yan, Mengshi, Yuan, C. -P.
We review progress in the global QCD analysis by the CTEQ-TEA group since the publication of CT18 parton distribution functions (PDFs) in the proton. Specifically, we discuss comparisons of CT18 NNLO predictions with the LHC 13 TeV measurements as we
Externí odkaz:
http://arxiv.org/abs/2108.06596