STI Publications - View Publication Form #15907
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Publication Information
| Title | Strange quark suppression from a simultaneous Monte Carlo analysis of parton distributions and fragmentation functions | ||||
| Abstract | We perform the first simultaneous extraction of unpolarized parton distributions and fragmentation functions from a Monte Carlo analysis of inclusive and semi-inclusive deep-inelastic scattering, Drell-Yan lepton-pair production, and single-inclusive $e^+ e^-$ annihilation data. We use data resampling techniques to thoroughly explore the Bayesian posterior distribution of the extracted quantum correlation functions, and use $k$-means clustering on the parameter samples to identify the configurations that give the best description across all reactions. Inclusion of the semi-inclusive data reveals a strong suppression of the strange quark distribution at parton momentum fractions $x \gtrsim 0.01$, in contrast with the ATLAS observation of enhanced strangeness in $W^\pm$ and $Z$ production at the LHC. The simultaneous analysis reveals significant correlations between the strange quark density and the strange $\to$ kaon fragmentation function needed to describe semi-inclusive $K^\pm$ produ | ||||
| Author(s) | Nobuo Sato, Carlota Andres Casas, Jacob Ethier, Wally Melnitchouk | ||||
| Publication Date | April 2020 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | Yes |
| Volume | 101 |
| Issue | |
| Page(s) | 074020 |
Attachments/Datasets/DOI Link
| Document(s) |
paper45.pdf
(STI Document)
PhysRevD.101.074020.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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