Semi-inclusive processes at low and high transverse momentum

By A. Bacchetta, D. Boer, M. Diehl, P. Mulders. 2008

155 citations recorded by the source corpus.

This talk reports on recent work where we studied the connection between the description of semi-inclusive DIS at high transverse momentum (based on collinear factorization) and low transverse momentum (based on transverse-momentum-dependent factorization). We used power counting to determine the leading behavior of the structure functions at intermediate transverse momentum in the two descriptions. When the power behaviors are different, two distinct mechanisms are present and there can be no matching between them. When the power behavior is the same, the two descriptions must match. An explicit calculation however shows that for some observables this is not the case, suggesting that the transverse-momentum-dependent-factorization description beyond leading twist is incomplete.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/9c5e90fccd391e2f6a155d41e7a2d48dea5bf98a

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In Nuclear and High Energy Physics

1. Andreas Schäfer
2. D. Ostermeier
3. M. Diehl
4. P. Kroll

Citations in the corpus

• Elements of a theory for multiparton interactions in QCD (2011, methodology): “The description based on such graphs was extensively used for spin effects and azimuthal correlations in Drell-Yan production [135–137] and semi-inclusive DIS in [118, 137, 138], building on the seminal work in [49, 119].”