Connected and disconnected sea partons from the CT18 parametrization of PDFs
Abstract
The separation of the connected and disconnected sea partons, which were uncovered in the Euclidean path-integral formulation of the hadronic tensor, is accommodated with an extended parametrization of the non-perturbative parton distribution functions in the CT18 global analysis. This is achieved with the help of the distinct small x behaviours of these two sea partons and the constraint from the lattice calculation of the ratio of the strange momentum fraction to that of the $$\bar{u}$$ or $$\bar{d}$$ in the disconnected insertion. The whole dataset of CT18 is used in this CT18CS fit. The impact of the recent SeaQuest data on the $$\bar{d}$$(x) – $$\bar{u}$$(x) distribution of CT18CS is also discussed. The separate momentum fractions for the valence, the connected sea and disconnected sea of u and d, the strange and the gluon partons are presented at the input scale μ = 1.3 GeV for the first time. They can be compared term-by-term with systematic error controlled lattice calculations.
- Publication Date:
- Research Org.:
- Univ. of Kentucky, Lexington, KY (United States)
- Sponsoring Org.:
- USDOE; National Science Foundation (NSF); National Science Foundation of China (NSFC)
- OSTI Identifier:
- 1897784
- Alternate Identifier(s):
- OSTI ID: 1958166
- Report Number(s):
- DOE-UKY-13065-2206.022431
Journal ID: ISSN 2470-0010; PRVDAQ; 096008
- Grant/Contract Number:
- SC0013065; AC05-06OR23177; AC05-00OR22725; PHY-2013791; 12175073
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 106 Journal Issue: 9; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; parton: distribution function; path integral: Euclidean; parametrization; lattice; gluon; nonperturbative; valence
Citation Formats
Hou, Tie-Jiun, Yan, Mengshi, Liang, Jian, Liu, Keh-Fei, and Yuan, C. -P. Connected and disconnected sea partons from the CT18 parametrization of PDFs. United States: N. p., 2022.
Web. doi:10.1103/PhysRevD.106.096008.
Hou, Tie-Jiun, Yan, Mengshi, Liang, Jian, Liu, Keh-Fei, & Yuan, C. -P. Connected and disconnected sea partons from the CT18 parametrization of PDFs. United States. https://doi.org/10.1103/PhysRevD.106.096008
Hou, Tie-Jiun, Yan, Mengshi, Liang, Jian, Liu, Keh-Fei, and Yuan, C. -P. Thu .
"Connected and disconnected sea partons from the CT18 parametrization of PDFs". United States. https://doi.org/10.1103/PhysRevD.106.096008.
@article{osti_1897784,
title = {Connected and disconnected sea partons from the CT18 parametrization of PDFs},
author = {Hou, Tie-Jiun and Yan, Mengshi and Liang, Jian and Liu, Keh-Fei and Yuan, C. -P.},
abstractNote = {The separation of the connected and disconnected sea partons, which were uncovered in the Euclidean path-integral formulation of the hadronic tensor, is accommodated with an extended parametrization of the non-perturbative parton distribution functions in the CT18 global analysis. This is achieved with the help of the distinct small x behaviours of these two sea partons and the constraint from the lattice calculation of the ratio of the strange momentum fraction to that of the $\bar{u}$ or $\bar{d}$ in the disconnected insertion. The whole dataset of CT18 is used in this CT18CS fit. The impact of the recent SeaQuest data on the $\bar{d}$(x) – $\bar{u}$(x) distribution of CT18CS is also discussed. The separate momentum fractions for the valence, the connected sea and disconnected sea of u and d, the strange and the gluon partons are presented at the input scale μ = 1.3 GeV for the first time. They can be compared term-by-term with systematic error controlled lattice calculations.},
doi = {10.1103/PhysRevD.106.096008},
journal = {Physical Review D},
number = 9,
volume = 106,
place = {United States},
year = {Thu Nov 10 00:00:00 EST 2022},
month = {Thu Nov 10 00:00:00 EST 2022}
}
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