Greljo, Admir; Iranipour, Shayan; Kassabov, Zahari; Madigan, Maeve; Moore, James; Rojo, Juan; Ubiali, Maria; Voisey, Cameron (2021). Parton distributions in the SMEFT from high-energy Drell-Yan tails. Journal of High Energy Physics, 2021(7), p. 122. Springer 10.1007/JHEP07(2021)122
|
Text
Greljo2021_Article_PartonDistributionsInTheSMEFTF.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (1MB) | Preview |
The high-energy tails of charged- and neutral-current Drell-Yan processes pro- vide important constraints on the light quark and anti-quark parton distribution functions (PDFs) in the large-x region. At the same time, short-distance new physics effects such as those encoded by the Standard Model Effective Field Theory (SMEFT) would induce smooth distortions to the same high-energy Drell-Yan tails. In this work, we assess for the first time the interplay between PDFs and EFT effects for high-mass Drell-Yan processes at the LHC and quantify the impact that the consistent joint determination of PDFs and Wilson coefficients has on the bounds derived for the latter. We consider two well-motivated new physics scenarios: 1) electroweak oblique corrections (Wˆ , Yˆ ) and 2) four-fermion interactions potentially related to the LHCb anomalies in R(K(∗)). We ac- count for available Drell-Yan data, both from unfolded cross sections and from searches, and carry out dedicated projections for the High-Luminosity LHC. Our main finding is that, while the interplay between PDFs and EFT effects remains moderate for the current dataset, it will become a significant challenge for EFT analyses at the HL-LHC.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Greljo, Admir |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
29 Dec 2021 14:01 |
Last Modified: |
05 Dec 2022 15:55 |
Publisher DOI: |
10.1007/JHEP07(2021)122 |
ArXiv ID: |
2104.02723 |
BORIS DOI: |
10.48350/161985 |
URI: |
https://boris.unibe.ch/id/eprint/161985 |
Actions (login required)
 |
Edit item |