Transverse momentum-weighted Sivers asymmetry in semi-inclusive deep inelastic scattering at next-to-leading order

Abstract

We study the next-to-leading order perturbative QCD corrections to the transverse momentum-weighted Sivers asymmetry in semi-inclusive hadron production in lepton-proton deep inelastic scattering. The corresponding differential cross section is evaluated as a convolution of a twist-three quark-gluon correlation function, often referred to as Qiu-Sterman function, the usual unpolarized fragmentation function, and a hard coefficient function. By studying the collinear divergence structure, we identify the evolution kernel for the Qiu-Sterman function. The hard coefficient function, which is finite and free of any divergence, is evaluated at one-loop order.

arXiv comment11 pages, 6 figures

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Cited by in corpus (26)

• QCD Evolution of the Sivers Asymmetry
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• Phenomenological constraints on $A_N$ in $p^{\uparrow }p\to \pi X$ from Lorentz invariance relations
• Transverse single spin asymmetry in hadronic ${\eta }_{c,b}$ production
• Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order
• Connections between collinear and transverse-momentum-dependent polarized observables within the Collins-Soper-Sterman formalism
• Measurement of $P_T$-weighted Sivers asymmetries in leptoproduction of hadrons
• Single-spin asymmetries at two loops
• Transverse momentum broadening in semi-inclusive deep inelastic scattering at next-to-leading order
• New pole contribution to $P_{h\perp }$-weighted single-transverse spin asymmetry in semi-inclusive deep inelastic scattering
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