6533b825fe1ef96bd1281ddc
RESEARCH PRODUCT
The strong coupling constant: State of the art and the decade ahead
D. D'enterriaS. KluthG. ZanderighiC. AyalaM. A. Benitez-rathgebJ. BluemleinD. BoitoN. BrambillaD. BritzgerS. CamardaA. M. Cooper-sarkarT. CridgeG. CveticM. Dalla BridaA. DeurF. GiuliM. GoltermanA. H. HoangJ. HustonM. JaminA. V. KotikovV. G. KrivokhizhinA. S. KronfeldV. LeinoK. LipkaT. MakelaB. MalaescuK. MaltmanS. MarzaniV. MateuS. MochP. F. MonniP. NadolskyP. NasonA. V. NesterenkoR. Perez-ramosS. PerisP. PetreczkyA. PichK. RabbertzA. RamosD. ReicheltA. Rodriguez-sanchezJ. RojoM. SaragneseL. SawyerM. SchottS. SchumannB. G. ShaikhatdenovS. SintG. SoyezD. TecaA. VairoM. VosC. WaitsJ. H. WeberM. WobischK. Xiesubject
p p: scatteringFOS: Physical scienceshep-latparton: distribution functionZ0: massHigh Energy Physics - Experimentmass [Z0]hadronic [final state]electron p: scatteringHigh Energy Physics - Experiment (hep-ex)mass: scaleHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)strong interaction: coupling constantscale [mass]deep inelastic scatteringstrong coupling[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]scattering [p p]quarkonium: decayParticle Physics - Phenomenologyelectroweak interaction[PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat]hep-exHigh Energy Physics - Lattice (hep-lat)High Energy Physics::Phenomenologylattice field theoryParticle Physics - Latticehep-phscattering [electron p]High Energy Physics - Phenomenology[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]final state: hadronicHigh Energy Physics::Experimentdecay [quarkonium]distribution function [parton]coupling constant [strong interaction]Particle Physics - Experimentdescription
This document provides a comprehensive summary of the state-of-the-art, challenges, and prospects in the experimental and theoretical study of the strong coupling $\alpha_s$. The current status of the seven methods presently used to determine $\alpha_s$ based on: (i) lattice QCD, (ii) hadronic $\tau$ decays, (iii) deep-inelastic scattering and parton distribution functions fits, (iv) electroweak boson decays, hadronic final-states in (v) e+e-, (vi) e-p, and (vii) p-p collisions, and (viii) quarkonia decays and masses, are reviewed. Novel $\alpha_s$ determinations are discussed, as well as the averaging method used to obtain the PDG world-average value at the reference Z boson mass scale, $\alpha_s(m^2_Z)$. Each of the extraction methods proposed provides a "wish list" of experimental and theoretical developments required in order to achieve an ideal permille precision on $\alpha_s(m^2_Z)$ within the next 10 years.
year | journal | country | edition | language |
---|---|---|---|---|
2022-03-15 |