Abstract
I review recent progress in understanding the structure of the nucleon sea and the role of the nucleon’s pion cloud. In particular, I discuss the consequences of the pion cloud for the ƌ−ū asymmetry in the proton, the neutron’s electric form factor, and the proton’s electric to magnetic form factor ratio.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M K Banerjee Prog. Part. Nucl. Phys. 31 77 (1993)
A W Thomas and W Melnitchouk in New Frontiers in Nuclear Physics (Singapore: World Scientific) (1993)
A W Thomas, W Melnitchouk and F M Steffens Phys. Rev. Lett. 85 2892 (2000)
D Arndt and M J Savage Nucl. Phys. A697 429 (2002)
J W Chen and X d ji Phys. Lett. B523 107 (2001)
W Melnichouk in Hadronic Structure, 14th Annual HUGS at CEBAF (ed.) J. Goity (Singapore: World Scientific) (2001), arXiv:hep-ph /006170
M A B Beg and A Zepeda Phys. Rev. D6 2912 (1972); J Gasser, M E Sainto and A Svarc, Nucl. Phys. B307 779 (1988); D B Leinweber and T D Cohen Phys. Rev. D47 2147 (1993).
J D Sullibvan Phys. Rev. D5 1732 (1972)
A W Thomas Phys. Lett. B126 97 (1983)
P Amaudraz et al, Phys Rev. Lett. 66 2712 (1991)
A Baldit et al, Phys. Lett. B332 244 (1994)
E A Hawker et al, Phys. Rev. Lett. 80 3715 (1998)
J C Peng and G T Garvey in Trends in Particle and Nuclear Physics (New York: Plenum Press) (1999), arXiv:hep-ph/9912370
For reviews see: J Speth and A W Thomas Adv. Nucl. Phys. 24 83 (1998); S Kumano Phys. Rep. 303 183 (1998)
S Weinberg Physica (Amsterdam) 96A 327 (1979); J Gasser and H Leutwyler Ann. Phys. 158 142 (1984)
W Melnitchouk, J Speth and A W Thomas Phys. Rev. D59 014033 (1999)
S Theberge, G A Miller and A W Thomas Can. J. Phys. 60 59 (1982)
S Weinberg Phys. Rev 150 1313 (1966); S D Drell, D J Levy and T M Yan Phys Rev. D1 1035 (1970).
W Melnitchouk and A W Thomas Phys. Rev. D47 3794 (1993)
A W Schreivber, A I Signal and A W Thomas Phys. Rev. D44 2653 (1991)
R D Field and R P Feynman Phys. Rev. D15 2590 (1977)
Fermilab experiment E906, P Reimer et al. spokespersons
J Levelt, P J Mulders and A W Schreiber Phys. Lett. B263 498 (1991)
K Ackerstaff et al, Phys. Rev. Lett. 81 5519 (1998)
W Melnitchouk in Procedings of the Workshop on Exclusive & Semi-Exclusive Processes at High Momentum Transfer (Jefferson Lab, 1999) arXiv:hep-ph/9909463
N Isgur, G Karl and D W L Sprung Phys. Rev. D23 163 (1981)
D H Lu, A W Thomas and A G Williams Phys. Rev. C57 2628 (1998)
G A Miller Phys. Rev. C66 032201 (2002)
M K Jones et al, Phys. Rev. Lett 84 1398 (2000); O Gayo et al, Phys. Rev. Lett. 88 092301 (2002); V Punjabi et al, Rev. C71 055202 (2005) [Erratum-ibid, C71 069902 (2005)]
H H Matevosyan, G A Miller and A W Thomas Phys. Rev. C71 055204 (2005)
R C Walker et al, Phys. Rev. D49 5671 (1994)
P G Blunden, W Melnitchouk and J A Tjon Phys. Rev. Lett. 91 142304 (2003); Phys. Rev. C72034612 (2005)
J Arrington, W Melnitchouk and J A Tjon Phys. Rev. C76 035205 (2007)
A I Signal and A W Thomas Phys. Lett. B191 206 (1987)
W Melnitchouk and M Malheiro Phys. Rev. C55 431 (1997); M Malheiro and W Melnitchouk Phys. Rev. C56 2373 (1997); W Melnitchouk and M Malheiro Phys. Lett. B451 224 (1999)
R D Young, J Roche, R D Carlini and A W Thomas Phys. Rev. Lett. 97 102002 (2006)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Melnitchouk, W. Pion cloud and the sea of the nucleon. Indian J Phys 83, 617–628 (2009). https://doi.org/10.1007/s12648-009-0077-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12648-009-0077-0