Abstract
At large values of x, the parton distribution functions (PDFs) of the proton are poorly constrained and there are considerable variations between different global fits. Data at such high x have already been published by the ZEUS Collaboration, but not yet used in PDF extractions. A technique for comparing predictions based on different PDF sets to the observed number of events in the ZEUS data is presented. It is applied to compare predictions from the most commonly used PDFs to published ZEUS data at high Bjorken x. A wide variation is found in the ability of the PDFs to predict the observed results. A scheme for including the ZEUS high-x data in future PDF extractions is discussed.
| Original language | English |
|---|---|
| Article number | 112009 |
| Number of pages | 19 |
| Journal | Physical Review D |
| Volume | 101 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 26 Jun 2020 |
Funding
We appreciate the contributions to the construction, maintenance, and operation of the ZEUS detector of many people who are not listed as authors. The HERA machine group and the DESY computing staff are especially acknowledged for their success in providing excellent operation of the collider and the data-analysis environment. We thank the DESY directorate for their strong support and encouragement. The work is supported by the Italian National Institute for Nuclear Physics (INFN), the German Federal Ministry for Education and Research (BMBF), under Contract No. 05 H09PDF, High Impact Research (HIR) Grant No. UM.C/625/1/HIR/149 and University of Malaya Research Grant (UMRG) Grants No. RU006-2013, No. RP012A-13AFR, and No. RP012B-13AFR from Universiti Malaya, and Exploratory Research Grant Scheme (ERGS) Grant No. ER004-2012A from the Ministry of Education, Malaysia, the Polish National Science Centre (NCN) Grant No. DEC-2014/13/B/ST2/02486, the Science and Technology Facilities Council, United Kingdom, the German Federal Ministry for Education and Research (BMBF), under Contract No. 05h09GUF, and the SFB 676 of the Deutsche Forschungsgemeinschaft (DFG), the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and its grants for Scientific Research, the Israel Science Foundation, in part by the Office of Nuclear Physics within the U.S. DOE Office of Science, the Natural Sciences and Engineering Research Council of Canada (NSERC), and by DESY.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)