Testing parton distribution functions with -channel single-top-quark production
Abstract
The production of single top-quarks in the -channel at hadron colliders imposes strong analytic constraints on parton distribution functions (PDFs) through its double deeply inelastic scattering (DDIS) form. We exploit this to provide novel consistency checks between LO, NLO and NNLO PDF fits and propose to include it as a constraint in future PDF fits. Furthermore, while it is well-known that the -quark PDF is highly sensitive to the -quark mass, we show that the treatment of this systematic uncertainty is still incomplete, fragmented or outright missing at the moment. Consequently, we conclude that the -quark mass uncertainty is the dominant but so far broadly neglected theory uncertainty for this process.
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1833121
- Alternate Identifier(s):
- OSTI ID: 1832831
- Report Number(s):
- FERMILAB-PUB-21-456-T; IIT-CAPP-21-01; arXiv:2109.10448
Journal ID: ISSN 2470-0010; PRVDAQ; 094042
- Grant/Contract Number:
- AC02-07CH11359; SC0012704
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 104 Journal Issue: 9; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Campbell, John, Neumann, Tobias, and Sullivan, Zack. Testing parton distribution functions with t -channel single-top-quark production. United States: N. p., 2021.
Web. doi:10.1103/PhysRevD.104.094042.
Campbell, John, Neumann, Tobias, & Sullivan, Zack. Testing parton distribution functions with t -channel single-top-quark production. United States. https://doi.org/10.1103/PhysRevD.104.094042
Campbell, John, Neumann, Tobias, and Sullivan, Zack. Mon .
"Testing parton distribution functions with t -channel single-top-quark production". United States. https://doi.org/10.1103/PhysRevD.104.094042.
@article{osti_1833121,
title = {Testing parton distribution functions with t -channel single-top-quark production},
author = {Campbell, John and Neumann, Tobias and Sullivan, Zack},
abstractNote = {The production of single top-quarks in the t-channel at hadron colliders imposes strong analytic constraints on parton distribution functions (PDFs) through its double deeply inelastic scattering (DDIS) form. We exploit this to provide novel consistency checks between LO, NLO and NNLO PDF fits and propose to include it as a constraint in future PDF fits. Furthermore, while it is well-known that the b-quark PDF is highly sensitive to the b-quark mass, we show that the treatment of this systematic uncertainty is still incomplete, fragmented or outright missing at the moment. Consequently, we conclude that the b-quark mass uncertainty is the dominant but so far broadly neglected theory uncertainty for this process.},
doi = {10.1103/PhysRevD.104.094042},
journal = {Physical Review D},
number = 9,
volume = 104,
place = {United States},
year = {Mon Nov 29 00:00:00 EST 2021},
month = {Mon Nov 29 00:00:00 EST 2021}
}
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