| Article | |
| Report number | arXiv:1508.01475 ; CERN-PH-TH-2015-185 ; DESY-15-136 ; CERN-PH-TH-2015-185 |
| Title | Drell-Yan Production at NNLL'+NNLO Matched to Parton Showers |
| Author(s) | Alioli, Simone (CERN) ; Bauer, Christian W. (UC, Berkeley) ; Berggren, Calvin (Texas Lutheran U.) ; Tackmann, Frank J. (DESY) ; Walsh, Jonathan R. (UC, Berkeley) |
| Publication | 2015-11-19 |
| Imprint | 06 Aug 2015 |
| Number of pages | 26 |
| Note | Comments: 26 pages, 20 figures 26 pages, 20 figures |
| In: | Phys. Rev. D 92 (2015) 094020 |
| DOI | 10.1103/PhysRevD.92.094020 |
| Subject category | Particle Physics - Phenomenology |
| Abstract | We present results for Drell-Yan production from the GENEVA Monte-Carlo framework. We combine the fully-differential NNLO calculation with higher-order resummation in the 0-jettiness resolution variable. The resulting parton-level events are further combined with parton showering and hadronization provided by PYTHIA8. The 0-jettiness resummation is carried out to NNLL', which consistently incorporates all singular virtual and real NNLO corrections. It thus provides a natural perturbative connection between the NNLO calculation and the parton shower regime, including a systematic assessment of perturbative uncertainties. In this way, inclusive observables are correct to NNLO, up to small power corrections in the resolution cutoff. Furthermore, the perturbative accuracy of 0-jet-like resummation variables is significantly improved beyond the parton shower approximation. We provide comparisons with LHC measurements of Drell-Yan production at 7 TeV from ATLAS, CMS, and LHCb. As already observed in $e^+e^-$ collisions, for resummation-sensitive observables, the agreement with data is noticeably improved by using a lower value of $\alpha_s(M_Z) = 0.1135$. |
| Copyright/License | License preprint: © 2015-2024 CERN (License: CC-BY-4.0) publication: © 2015-2024 The Author(s) (License: CC-BY-3.0) |
Corresponding record in: Inspire
Záznam vytvorený 2015-08-07, zmenený 2022-08-17