Understanding PDF uncertainty in W boson mass measurements*
Abstract
Abstract We study the dependence of the transverse mass distribution of the charged lepton and the missing energies on the parton distributions (PDFs) adapted to the $$W$$ boson mass measurements at the CDF and ATLAS experiments. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd. We compare the shape variations of the distribution induced by different PDFs and find that spread of predictions from different PDF sets can be much larger than the PDF uncertainty predicted by a specific PDF set. We suggest analyzing the experimental data using up-to-date PDFs for a better understanding of the PDF uncertainties in the $$W$$ boson mass measurements. We further carry out a series of Lagrange multiplier scans to identify the constraints on the transverse mass distribution imposed by individual data sets in the CT18 global analysis. In the case of CDF measurement, the distribution is mostly sensitive to the $$d$$-quark PDFs at the intermediate $$x$$ region that is largely constrained by the DIS and Drell-Yan data on the deuteron target, as well as the Tevatron lepton charge asymmetry data.
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1900277
- Alternate Identifier(s):
- OSTI ID: 1888058
- Resource Type:
- Published Article
- Journal Name:
- Chinese Physics C, High Energy Physics and Nuclear Physics
- Additional Journal Information:
- Journal Name: Chinese Physics C, High Energy Physics and Nuclear Physics Journal Volume: 46 Journal Issue: 12; Journal ID: ISSN 1674-1137
- Publisher:
- IOP Publishing
- Country of Publication:
- China
- Language:
- English
Citation Formats
Gao, Jun, Liu, Dianyu, and Xie, Keping. Understanding PDF uncertainty in W boson mass measurements*. China: N. p., 2022.
Web. doi:10.1088/1674-1137/ac930b.
Gao, Jun, Liu, Dianyu, & Xie, Keping. Understanding PDF uncertainty in W boson mass measurements*. China. https://doi.org/10.1088/1674-1137/ac930b
Gao, Jun, Liu, Dianyu, and Xie, Keping. Thu .
"Understanding PDF uncertainty in W boson mass measurements*". China. https://doi.org/10.1088/1674-1137/ac930b.
@article{osti_1900277,
title = {Understanding PDF uncertainty in W boson mass measurements*},
author = {Gao, Jun and Liu, Dianyu and Xie, Keping},
abstractNote = {Abstract We study the dependence of the transverse mass distribution of the charged lepton and the missing energies on the parton distributions (PDFs) adapted to the $W$ boson mass measurements at the CDF and ATLAS experiments. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd. We compare the shape variations of the distribution induced by different PDFs and find that spread of predictions from different PDF sets can be much larger than the PDF uncertainty predicted by a specific PDF set. We suggest analyzing the experimental data using up-to-date PDFs for a better understanding of the PDF uncertainties in the $W$ boson mass measurements. We further carry out a series of Lagrange multiplier scans to identify the constraints on the transverse mass distribution imposed by individual data sets in the CT18 global analysis. In the case of CDF measurement, the distribution is mostly sensitive to the $d$-quark PDFs at the intermediate $x$ region that is largely constrained by the DIS and Drell-Yan data on the deuteron target, as well as the Tevatron lepton charge asymmetry data.},
doi = {10.1088/1674-1137/ac930b},
journal = {Chinese Physics C, High Energy Physics and Nuclear Physics},
number = 12,
volume = 46,
place = {China},
year = {Thu Dec 01 00:00:00 EST 2022},
month = {Thu Dec 01 00:00:00 EST 2022}
}
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