Reduction of the electroweak correlation in the PDF updating by using the forward-backward asymmetry of Drell-Yan process

Article Physics, Nuclear

Reduction of PDF uncertainty in the measurement of the weak mixing angle at the ATLAS experiment

Yao Fu et al.

Summary: The study investigates the impact of parton distribution function (PDF) uncertainty on the measurement of the effective weak mixing angle sin(2)theta(l)(eff) at the CERN Large Hadron Collider (LHC), highlighting the potential of the Drell-Yan forward-backward asymmetry (AFB) and lepton charge asymmetry in reducing PDF uncertainty. The findings suggest that certain event removal strategies can significantly reduce bias in sin(2)theta(l)(eff) extraction while maintaining sensitivity in reducing PDF uncertainty.

CHINESE PHYSICS C (2021)

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Article Astronomy & Astrophysics

New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC

Tie-Jiun Hou et al.

Summary: The new parton distribution functions (PDFs) from the CTEQ-TEA collaboration are determined using a wide variety of high-precision Large Hadron Collider (LHC) data, in addition to other datasets. These PDFs are analyzed at next-to-leading order and next-to-next-to-leading order, with error sets determined using the Hessian method. The data sensitivity and preference towards quantities such as α(s)(m(Z)), and the gluon and strange quark distributions are quantified using fast PDF survey techniques.

PHYSICAL REVIEW D (2021)

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Correction Astronomy & Astrophysics