Quick Search:
Prog. Theor. Phys. Vol. 103 No. 1 (2000) pp. 127-134
Soft Pions at High Energy as an Origin of Flavor Asymmetry of the Light Sea Quarks in the Nucleon
Susumu Koretune
Department of Physics, Shimane Medical University,
Izumo 693-8501, Japan
(Received July 29, 1999)
Abstract:
By using the soft pion theorem in inclusive reactions, the soft pion contribution
to the structure function F2 in the nucleon is estimated. It is shown that
this contribution produces such a large flavor asymmetry in the light sea
quark distributions that it gives about 30– 50 % of the NMC deficit in the
Gottfried sum.
URL :
http://ptp.ipap.jp/link?PTP/103/127/
DOI : 10.1143/PTP.103.127
References:
-
S. Koretune, Phys. Rev. D47 (1993), 2690[APS]; and early references cited therin.
-
P. Amaudruz et al., Phys. Rev. Lett. 66 (1991), 2712[APS].
-
S. Kumano, Phys. Rep. 303 (1998), 183[CrossRef].
-
E866 Collaboration, E. A. Hawker et al., Phys. Rev. Lett. 80 (1998), 3715[APS].
J. C. Peng et al., Phys. Rev. D58 (1998), 092004[APS].
- N. Sakai and M. Yamada, Phys. Lett. 37B (1971), 505.
N. Sakai, Nucl. Phys. B39 (1972), 119.
-
S. Weinberg, Phys. Rev. D2 (1970), 674[APS].
- S. Koretune, Prog. Theor. Phys. 59 (1978), 1989[PTP]; and early references cited therein.
- H. Fritzsch and M. Gell-mann, in Proceedings of the International Conference on Duality and Symmetry in Hadron Physics, ed. E. Gotsman (Weizmann Science Physics, Jerusalem, 1971), p. 317.
-
S. Koretune, Y. Masui and M. Aoyama, Phys. Rev. D18 (1978), 3248[APS].
- S. Koretune, Phys. Lett. 115B (1982), 261.
-
A. H. Mueller, Phys. Rev. D18 (1978), 3705[APS].
- S. Koretune, Prog. Theor. Phys. 89 (1993), 1027[PTP].
-
T. Gehrmann and W. J. Stirling, Phys. Rev. D53 (1996), 6100[APS].
A. D. Martin, R. G. Roberts and W. J. Stirling, Phys. Lett. B354 (1995), 155.
- DELPHI collaboration, P. Abreu et al., Z. Phys. C50 (1995), 185.
-
CTEQ collaboration, H.-L. Lai et al., Phys. Rev. D55 (1997), 1280[APS].
