skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: NEUTRINO-PRODUCTION OF CHARM AND THE STRANGENESS ASYMMETRY OF THE NUCLEON.

Abstract

Interest in the strange nucleon sea has been renewed when it was realized that the strangeness asymmetry s{sup -} = s - {bar s} plays a prominent role in the interpretation of the NuTeV weak mixing angle anomaly. The author reviews the NLO QCD calculation of the neutrino-production of opposite-sign dimuons as the experimental signature of the strange quark parton density. Results from a recent CTEQ fit are presented and discussed with respect to their stability under NLO corrections and their impact on the NuTeV measurement.

Authors:
Publication Date:
Research Org.:
BROOKHAVEN NATIONAL LABORATORY (US)
Sponsoring Org.:
DOE/OFFICE OF SCIENCE (US)
OSTI Identifier:
15009556
Report Number(s):
BNL-73082-2004-CP
R&D Project: PO-006; KB03; TRN: US0405636
DOE Contract Number:
AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: PROCEEDINGS OF DIS 2004, STRBSKE PLESO (SK), 04/14/2004--04/18/2004; Other Information: PBD: 14 Apr 2004
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMMETRY; NUCLEONS; PARTONS; QUANTUM CHROMODYNAMICS; QUARKS; SEAS; STABILITY; STRANGENESS

Citation Formats

KRETZER,S. NEUTRINO-PRODUCTION OF CHARM AND THE STRANGENESS ASYMMETRY OF THE NUCLEON.. United States: N. p., 2004. Web.
KRETZER,S. NEUTRINO-PRODUCTION OF CHARM AND THE STRANGENESS ASYMMETRY OF THE NUCLEON.. United States.
KRETZER,S. 2004. "NEUTRINO-PRODUCTION OF CHARM AND THE STRANGENESS ASYMMETRY OF THE NUCLEON.". United States. doi:. https://www.osti.gov/servlets/purl/15009556.
@article{osti_15009556,
title = {NEUTRINO-PRODUCTION OF CHARM AND THE STRANGENESS ASYMMETRY OF THE NUCLEON.},
author = {KRETZER,S.},
abstractNote = {Interest in the strange nucleon sea has been renewed when it was realized that the strangeness asymmetry s{sup -} = s - {bar s} plays a prominent role in the interpretation of the NuTeV weak mixing angle anomaly. The author reviews the NLO QCD calculation of the neutrino-production of opposite-sign dimuons as the experimental signature of the strange quark parton density. Results from a recent CTEQ fit are presented and discussed with respect to their stability under NLO corrections and their impact on the NuTeV measurement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2004,
month = 4
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • The current experimental status of charm production by neutrinos is reviewed. Recent results on like-sign dimuons are also discussed.
  • We discuss the dynamical effects of strangeness and charm production in high energy nuclear collisions. In order to understand the early stage dynamical evolution, it is necessary to study the transverse momentum distributions of multi-strange hadrons like {Xi} and {Omega} and charm mesons like J/{Psi} as a function of collision centrality.
  • We calculate the single transverse-spin asymmetry for open charm production in pp collisions within the QCD collinear factorization approach. We include contributions from both twist-three quark-gluon and tri-gluon correlation functions. We find that the quark-gluon correlation functions alone generate only a very small asymmetry for open charm production in the kinematic region of current interest at RHIC, so that the observation of any significant single-spin asymmetry would be a clear indication of the presence of tri-gluon correlations inside a polarized proton. We furthermore demonstrate that the tri-gluon contribution could be very different for the production of D and \bar{D} mesons.more » These features make the single spin asymmetry in open charm production in polarized pp collisions at RHIC an excellent probe of tri-gluon correlation functions.« less
  • We calculate the single transverse-spin asymmetry for open charm production in pp collisions within the QCD collinear factorization approach. We include contributions from both twist-three quark-gluon and trigluon correlation functions. We find that the quark-gluon correlation functions alone generate only a very small asymmetry for open charm production in the kinematic region of current interest at RHIC, so that the observation of any significant single-spin asymmetry would be a clear indication of the presence of trigluon correlations inside a polarized proton. We furthermore demonstrate that the trigluon contribution could be very different for the production of D and D mesons.more » These features make the single-spin asymmetry in open charm production in polarized pp collisions at RHIC an excellent probe of trigluon correlation functions.« less
  • A study has been made of K[sup 0], [Lambda], and [bar [Lambda]] particle production in charged-current neutrino interactions at higher energy ([l angle]E[sub [nu]][r angle]=150 GeV) than any previous study. The experiment was done at Fermilab using the 15-ft. bubble chamber, and the data sample consists of 968 observed neutral strange particles. Production rates per event have been measured to be (40.8[plus minus]4.8)% for K[sup 0], (12.7[plus minus]1.4)% for [Lambda], and (1.5[plus minus]0.5)% for [bar [Lambda]]; they are significantly higher than in lower-energy experiments. The dependence of rates on event variables has been measured, and single-particle distributions obtained as well.more » Comparisons have been made with previous experiments.« less