Large-x parton distributions

Citation
S. Kuhlmann et al., Large-x parton distributions, PHYS LETT B, 476(3-4), 2000, pp. 291-296
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
476
Issue
3-4
Year of publication
2000
Pages
291 - 296
Database
ISI
SICI code
0370-2693(20000316)476:3-4<291:LPD>2.0.ZU;2-S
Abstract
Reliable knowledge of parton distributions at large x is crucial for many s earches for new physics signals in the next generation of collider experime nts. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x > 0.1. We examine the status of the gluon and quark distributions in light of new questions that have been raised in the past two years about "large-x" part on distributions, as well as recent measurements which have improved the pa rton uncertainties. We perform several specific global fits to answer the o utstanding questions, and to investigate the potential of future experiment s, particularly at HERA, which may provide critical constraints on parton d istributions at large x. (C) 2000 Published by Elsevier Science B.V. All ri ghts reserved.