Abstract
The partonic flux originated from a heavy nucleus is not the mere sum of the fluxes coming from the individual nucleons. There are various effects that give rise to modifications. One of these effects is here investigated, i.e. the presence of a cloud of virtual pions co-moving with the nucleus. It is found that the contribution of these virtual particles to the total parton flux should be rather small even if one includes the contribution of resonances.
Similar content being viewed by others
References
I.P. Ivanov, N.N. Nikolaev, W. Schäfer, B.G. Zacharov, V.R. Zoller, Lectures on Diffraction and Saturation of Nuclear Partons in DIS off Heavy Nuclei, arXiv:hep-ph/0212161v2 (2003)
R. Venugopalan, Nucl. Phys. A 590, 147c (1995).
H.W. Lewis, J.R. Oppenheimer, S.A. Wouthuysen, Phys. Rev. 73, 127 (1948).
G.E. Brown, M. Buballa, Zi Bang Li, J. Wambach, Nucl. Phys. A 593, 295 (1995)
J.D. Walecka, Theoretical Nuclear and Subnuclear Physics (World Scientific, 2004) Chapt. 20.
G. Altarelli, N. Cabibbo, L. Majani, R. Petronzio, Nucl. Phys. B 92, 413 (1975)
F. Bloch, A. Nordsieck, Phys. Rev. 52, 54 (1937)
H. Umezawa, Quantum Field Theory (North Holland, 1956).
R.L. Sugar, Phys. Rev. D 9, 2474 (1974).
M. Alvioli, C. Ciofi degli Atti, I. Marchino, V. Palli, H. Morita, Phys. Rev. C 78, 031601R (2008).
M. Alberg, E.M. Henley, Phys. Lett. B 611, 111 (2005).
S. Fubini, G. Furlan, Physics 1, 229 (1965)
E.E. Salpeter, Phys. Rev. 87, 328 (1952).
Author information
Authors and Affiliations
Corresponding author
Additional information
M. Anselmino
Rights and permissions
About this article
Cite this article
Calucci, G. Parton fluxes and virtual pions in heavy nuclei. Eur. Phys. J. A 39, 365–371 (2009). https://doi.org/10.1140/epja/i2008-10726-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epja/i2008-10726-y