Influence of heavy-quark recombination on the nucleon strangeness asymmetry
- Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 (China)
The nucleon strange and antistrange distribution asymmetry is an important issue in the study of the nucleon structure. In this work, we show that the heavy-quark recombination processes from a perturbative QCD picture can give a sizable influence on the measurement of the nucleon strangeness asymmetry from charged-current charm production processes, such as the CCFR and NuTeV dimuon measurements. When the influence of heavy-quark recombination is considered, a positive effective {delta}S{sub HR}{sup -} should be added to the initially extracted strangeness asymmetry S{sup -}{identical_to}{integral}dx[s(x)-s(x)]x, supporting the strangeness asymmetry S{sup -} being positive, which is helpful to explain the NuTeV anomaly within the framework of the standard model.
- OSTI ID:
- 21249699
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 77, Issue 5; Other Information: DOI: 10.1103/PhysRevD.77.054002; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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