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Power Corrections to Event Shape Distributions

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arxiv hep-ph/9704298 v2 pith:XRWHHA2M submitted 1997-04-11 hep-ph

classification hep-ph
keywords shapecorrectionsdistributionsvariableseventnon-perturbativepowerrange
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We estimate the effects of non-perturbative physics on the differential distributions of infrared- and collinear-safe $e^+e^-$ event shape variables, by extending the notion of an infrared-regular effective strong coupling, which accounts for the non-perturbative corrections to the mean values of several shape variables, to their distributions. This leads to $1/Q$ power corrections over a range of values of the shape variables considered, where $Q$ is the centre-of-mass energy. In the case of the thrust variable, the leading correction is simply a shift of the distribution, by an amount proportional to $1/Q$. We show that this gives an excellent description of the data throughout a wide range of $T$ and $Q$.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Centauric 1-Jettiness in DIS and Universal Power Corrections

    hep-ph 2026-06 unverdicted novelty 7.0 of 10

    Introduces Centauric 1-jettiness in DIS, derives N3LL resummation matched to NLO, and establishes universal non-perturbative power corrections scaling as 1/R via reduction to rescaled hemisphere soft function.

  2. Thrust distribution in electron-positron annihilation at full NNNLL+NNLO (and beyond) in QCD

    hep-ph 2025-02 conditional novelty 7.0 of 10

    Laplace-space resummation of the thrust distribution at N4LL accuracy yields alpha_S(mZ^2) = 0.1181 +/- 0.0018, consistent with the world average, while physical-space resummation gives a lower value.

  3. An Optimal Transportation Approach for Improved Confidence Intervals

    stat.ME 2026-06 unverdicted novelty 6.0 of 10

    Optimal-transport couplings are used to construct confidence intervals that reduce coverage error relative to classical quantile-based intervals, with consistency theory and data-driven hyperparameters.

  4. Monte Carlo Event Generators for Future Lepton Colliders

    hep-ph 2026-06 unverdicted novelty 2.0 of 10

    Reviews selected challenges in Monte Carlo event generators for future lepton colliders including electroweak corrections, initial-state radiation, beam dynamics, perturbative QCD and non-perturbative modelling.

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