Power corrections in semi-inclusive deep inelastic scatterings at fixed target energies

Abstract

The COMPASS collaboration published precise data on production cross section of charged hadrons in lepton-hadron semi-inclusive deep inelastic scattering, showing almost an order of magnitude larger than next-to-leading order QCD calculations when $P_{h_T}$ and $z_h$ are sufficiently large. We explore the role of power corrections to the theoretical calculations, and quantitatively demonstrate that the power corrections are extremely important for these data when the final-state multiplicity is low and the production kinematics is near the edge of phase space. Our finding motivates more detailed studies on power corrections for upcoming experiments at Jefferson Lab, as well as the future Electron-Ion Collider.

12 pages, 10 figures, matching the version published in Physical Review D

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Cited by in corpus (5)

• Simultaneous Monte Carlo analysis of parton densities and fragmentation functions
• Predictive power of transverse-momentum-dependent distributions
• Basics of factorization in a scalar Yukawa field theory
• Measurements of Normalized Differential Cross Sections of Inclusive $\eta$ Production in $e^{+}{e}^{-}$ Annihilation at Energy from 2.0000 to 3.6710 GeV
• Power expansion for heavy quarkonium production at next-to-leading order in ${\mathrm{e}}^{+}{\mathrm{e}}^{-}$ annihilation