Publications
Publication Information
| Title | Matching factorization theorems with an inverse-error weighting |
| Authors | Andrea Signori, M. Echevarria, T. Kasemets, Jean-Philippe Lansberg, C. Pisano |
| JLAB number | JLAB-THY-18-2611 |
| LANL number | arXiv:1801.01480 |
| Other number | DOE/OR/23177-4304, MITP/17-107 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physics Letters B Volume 781 Page(s) 161-168 Refereed | |
| Publication Abstract: | We propose a new fast method to match factorization theorems applicable in different kinematical regions, such as the transverse-momentum-dependent and the collinear factorization theorems in Quantum Chromodynamics. At variance with well-known methods relying on the subtraction of double-counted contributions, our method simply builds on their weighting using the theory uncertainties deduced from the factorization theorems themselves. This allows us to estimate the unknown complete matched cross section from an inverse-error-weighted average. The method is simple and provides an evaluation of the theoretical uncertainty of the matched cross section associated with the uncertainties from the power corrections to the factorization theorems. Its usage is illustrated with several basic examples, such as Z boson, W boson, Drell-Yan lepton-pair and H0 boson production in hadronic collisions, and compared to the state-of-the-art Collins-Soper-Sterman subtraction scheme. The method is not limited to the transverse-momentum spectrum, but can, straightforwardly, be extended to match any (un)polarized cross section differential in other variables, including multi-differential measurements. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1016/j.physletb.2018.03.075 |
| Accepted Manuscript: | 1-s2.0-S0370269318302715-main.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |