Neutral current forward–backward asymmetry: from $$\theta _W$$θW to PDF determinations

@article{Accomando2018NeutralCF,
  title={Neutral current forward–backward asymmetry: from \$\$\theta \_W\$\$$\theta$W to PDF determinations},
  author={Elena Accomando and Juri Fiaschi and Francesco Hautmann and S. Moretti},
  journal={The European Physical Journal C},
  year={2018},
  volume={78},
  pages={1-9}
}
Measurements of the forward–backward asymmetry in neutral-current Drell–Yan di-lepton production have primarily been used for determinations of the weak mixing angle $$\theta _W$$θW. We observe that, unlike the case of Run-I of the Large Hadron Collider (LHC Run-I), for the first time at the LHC Run-II the reconstructed forward–backward asymmetry has the capability of placing useful constraints on the determination of the parton distribution functions (PDFs). By examining the statistical and… 
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References

SHOWING 1-10 OF 31 REFERENCES

Photon-initiated production of a dilepton final state at the LHC: Cross section versus forward-backward asymmetry studies

We explore the effects of Photon Induced (PI) production of a dilepton final state in the Large Hadron Collider environment. Using QED Parton Distribution Function (PDF) sets we can treat the photons

Forward-backward asymmetry as a discovery tool for Z′ bosons at the LHC

A bstractThe Forward-Backward Asymmetry (AFB) in Z′ physics is commonly only perceived as the observable which possibly allows one to interpret a Z′ signal appearing in the Drell-Yan channel by

Parton Distribution Functions, $\alpha_s$ and Heavy-Quark Masses for LHC Run II

We determine a new set of parton distribution functions (ABMP16), the strong coupling constant $\alpha_s$ and the quark masses $m_c$, $m_b$ and $m_t$ in a global fit to next-to-next-to-leading order

Parton distributions from high-precision collider data

We present a new set of parton distributions, NNPDF3.1, which updates NNPDF3.0, the first global set of PDFs determined using a methodology validated by a closure test. The update is motivated by

Constraining parton distribution functions from neutral current Drell-Yan measurements

We study the cross section σ and forward-backward asymmetry (AFB) in the process pp→γ∗,Z→+- (with =e, μ) for determinations of parton distribution functions (PDFs) of the proton. We show that, once

Indirect searches for Z'-like resonances at the LHC

We explore the possibility of indirectly observing the effects of Z{prime}-like particles with electroweak strength couplings in the Drell-Yan channel at the LHC with masses above the resonance

New parton distribution functions from a global analysis of quantum chromodynamics

Here, we present new parton distribution functions (PDFs) up to next-to-next-to-leading order (NNLO) from the CTEQ-TEA global analysis of quantum chromodynamics. These differ from previous CT PDFs in

Next-to-next-to-leading order Higgs production at Hadron Colliders.

The perturbative expansion of the production cross section is well behaved and that scale dependence is reduced relative to the NLO result, which gives confidence in the reliability of the prediction.