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The strange parton distribution of the nucleon: global analysis and applications

Hung-Liang Lai1,2,3, Pavel Nadolsky4, Jonathan Pumplin1, Daniel Stump1, Wu-Ki Tung1,2 and Chien-Peng Yuan1

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The strangeness degrees of freedom in the parton structure of the nucleon are explored in the global analysis framework, using the new CTEQ6.5 implementation of the general mass perturbative QCD formalism of Collins. We systematically determine the constraining power of available hard scattering experimental data on the magnitude and shape of the strange quark and anti-quark parton distributions. We find that current data favor a distinct shape of the strange sea compared to the isoscalar non-strange sea. A new reference parton distribution set, CTEQ6.5S0, and representative sets spanning the allowed ranges of magnitude and shape of the strange distributions, are presented. Some applications to physical processes of current interest in hadron collider phenomenology are discussed.

Keywords

Hadronic Colliders

Parton Model

Deep Inelastic Scattering

QCD

 

E-print Number: hep-ph/0702268

Cited: by |

Refers: to

PACS

12.38.Bx Perturbative calculations

14.65.-q Quarks

14.20.Dh Protons and neutrons

Subjects

Particle physics and field theory

Dates

Issue 04 (April 2007)

Received 20 March 2007, accepted for publication 11 April 2007

Published 30 April 2007



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