Lepton-charge and forward-backward asymmetries in Drell-Yan processes for precision electroweak measurements and new physics searches
Lepton-charge and forward-backward asymmetries in Drell-Yan processes for precision electroweak measurements and new physics searches
Precision determinations of Standard Model (SM) Electro-Weak (EW) parameters at the Large Hadron Collider (LHC) are dominated by uncertainties due to Parton Distribution Functions (PDFs). Reweighting and profiling techniques are routinely employed to treat this. We explore approaches based on combining measurements of charged current and neutral current Drell-Yan (DY) asymmetries to improve PDF uncertainties. We present the results of a numerical analysis performed with the open-source platform xFitter. PDF uncertainties are examined for lepton-charge and forward-backward asymmetries in regions of transverse and invariant masses near the vector-boson peak, based on LHC Run III and HL-LHC luminosity scenarios. We discuss the complementarity of the asymmetries in reducing PDF uncertainties in observables relevant to both SM and Beyond the SM (BSM) physics.
hep-ph
Fiaschi, J.
a417f04d-05ec-4bff-bdee-ba20ac560fa7
Giuli, F.
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Hautmann, F.
226fd98a-070e-478e-a02e-42a918dca6c0
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
26 May 2021
Fiaschi, J.
a417f04d-05ec-4bff-bdee-ba20ac560fa7
Giuli, F.
c1c1f0c0-00d3-4097-bce7-90c02b7fd75e
Hautmann, F.
226fd98a-070e-478e-a02e-42a918dca6c0
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Fiaschi, J., Giuli, F., Hautmann, F. and Moretti, S.
(2021)
Lepton-charge and forward-backward asymmetries in Drell-Yan processes for precision electroweak measurements and new physics searches.
Nuclear Physics B, 968, [115444].
(doi:10.1016/j.nuclphysb.2021.115444).
Abstract
Precision determinations of Standard Model (SM) Electro-Weak (EW) parameters at the Large Hadron Collider (LHC) are dominated by uncertainties due to Parton Distribution Functions (PDFs). Reweighting and profiling techniques are routinely employed to treat this. We explore approaches based on combining measurements of charged current and neutral current Drell-Yan (DY) asymmetries to improve PDF uncertainties. We present the results of a numerical analysis performed with the open-source platform xFitter. PDF uncertainties are examined for lepton-charge and forward-backward asymmetries in regions of transverse and invariant masses near the vector-boson peak, based on LHC Run III and HL-LHC luminosity scenarios. We discuss the complementarity of the asymmetries in reducing PDF uncertainties in observables relevant to both SM and Beyond the SM (BSM) physics.
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2103.10224v3
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1-s2.0-S0550321321001413-main
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Accepted/In Press date: 21 May 2021
e-pub ahead of print date: 24 May 2021
Published date: 26 May 2021
Keywords:
hep-ph
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Local EPrints ID: 491618
URI: http://eprints.soton.ac.uk/id/eprint/491618
ISSN: 0550-3213
PURE UUID: 1a2dae81-7407-4228-a90d-71d062ea6bbd
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Date deposited: 28 Jun 2024 16:39
Last modified: 12 Jul 2024 01:41
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Author:
J. Fiaschi
Author:
F. Giuli
Author:
F. Hautmann
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