skip to main content

This content will become publicly available on February 16, 2017

Title: New parton distribution functions from a global analysis of quantum chromodynamics

Here, we present new parton distribution functions (PDFs) up to next-to-next-to-leading order (NNLO) from the CTEQ-TEA global analysis of quantum chromodynamics. These differ from previous CT PDFs in several respects, including the use of data from LHC experiments and the new D0 charged lepton rapidity asymmetry data, as well as the use of more flexible parametrization of PDFs that, in particular, allows a better fit to different combinations of quark flavors. Predictions for important LHC processes, especially Higgs boson production at 13 TeV, are presented. These CT14 PDFs include a central set and error sets in the Hessian representation. For completeness, we also present the CT14 PDFs determined at the leading order (LO) and the next-to-leading order (NLO) in QCD. Besides these general-purpose PDF sets, we provide a series of (N)NLO sets with various αs values and additional sets in general-mass variable flavor number (GM-VFN) schemes, to deal with heavy partons, with up to 3, 4, and 6 active flavors.
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [5] ;  [5] ;  [5] ;  [5]
  1. Xinjiang Univ., Xinjiang (China); Michigan State Univ., East Lansing, MI (United States)
  2. Southern Methodist Univ., Dallas, TX (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Univ. of Manchester, Manchester (United Kingdom)
  5. Michigan State Univ., East Lansing, MI (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
SC0013681; SC0003870; FG02-96ER40969; AC02-06CH11357
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 3; Journal ID: ISSN 2470-0010
American Physical Society (APS)
Research Org:
Southern Methodist Univ., Dallas, TX (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States