The Role of Pion Cloud in the Structure Function and the EMC Effect of 27Al, 56Fe, 63Cu and, 107Ag nuclei
American Journal of Modern Physics
Volume 2, Issue 4, July 2013, Pages: 190-194
Received: May 21, 2013;
Published: Jun. 10, 2013
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Sara Hatampanah, Department of Physics, University of MohagheghArdabili, Ardabil, Iran
Negin SattaryNikkhoo, Department of Physics, University of MohagheghArdabili, Ardabil, Iran
Farhad Zolfagharpour, Department of Physics, University of MohagheghArdabili, Ardabil, Iran
In this paper we have studied role of pionic contribution in the structure function and the EMC effect for27Al, 56Fe, 63Cu and, 107Ag nuclei. For extracting nuclear structure function, first we calculated contribution of the Fermi motion, and the binding energy effects and, then, we added pionic contribution to them. Also, we used the free GRV nucleon structure functions in the conventional nuclear theory. Extracted results show that using the pionic contribution in these nuclei structure function and the EMC effect give good agreement with experimental data.
The Role of Pion Cloud in the Structure Function and the EMC Effect of 27Al, 56Fe, 63Cu and, 107Ag nuclei, American Journal of Modern Physics.
Vol. 2, No. 4,
2013, pp. 190-194.
J. J. Aubert, G. Bassompierr, K.H. Becks, C. Best, E. Böhm, X. de Bouard, F.W. Brasse, et al., "The ratio of the nucleon structure sunctionsF2N for Iron and Deuterium" Phys.Lett. B., Vol. 123, No. 3-4, pp. 275-277, 1983.
J. Ashman, B. Badelek, G. Baum, J. Beaufays, C. P. Bee, C. Benchouk, et al., "Measurement of the ratios of deep inelastic muon-nucleus cross sections on various nucleicompared to Deuterium," Phys. Lett. B., Vol. 202, 4, pp. 603-610, 1988.
P. Amaudruz, M. Arneodo, A. Arvidson, B. Badelek and G. Baum, et al., "Precision measurement of the structure function ratios F2He/F2D, F2C/F2D and F2Ca/F2D,"Z. Phys. C., Vol. 51, 3, pp. 387-393, 1991.
The European Muon Collaboration, M. Arneodo, A. Arvidson, J.J. Aubert, B. Badelek, J. Beaufays, C.P. Bee, C. Benchouk, et al., "Measurements of the nucleon structure function in the range 0.002 < x < 0.17 and 00.2 < Q2< 8 GeV2 in deuterium, carbon and calcium"Nucl. Phys. B., Vol. 333, pp. 1-47, 1990.
BCDMS Collaboration, A.C. Benvenuti, D. Bollini, G. Bruni, F.L. Navarria, A. Argento, J. Cvach, et al., "Nuclear effects in deep inelastic muon scattering on deuterium and iron targets" Phys. Lett. B., Vol.189,pp. 483-487, 1987.
T.Uchiyama, K.Saito, "European Muon Collaboration effect in deuteron and in three-body nuclei"Physical Review .C. Vol. 38, No.5, pp. 2245-2250, 1988.
E.L. Berger, F.Coester, "Nuclear effects in deep-inelastic lepton scattering" Phys, Rev, D.,Vol. 38, No. 5,pp.1071-1083, 1985.
S. V. Akulinichev, S. Shlomo, S. A. Kulagin, and G. M. Vagradov, "Lepton-nucleus deep-inelastic scattering"Phys. Rev. Lett., Vol.55, No. 21, pp. 2239-2241,1985.
F. Zolfagharpour, http://arxiv.org/abs/0802.1623v2.
M. Gluck, E. Reya and A. Vogt, "Dynamical Parton Distributions of Parton and Small-x Physics" Z. Phys. C., Vol. 67, pp. 433-447, 1995.
R. C. Barratt and D.F. Jackson, "Nuclear sizes and structure," Oxford University Press,1977.
N. SattaryNikkhoo, F.Zolfagharpour, "Study of the EMC effect for 27Al, 56Fe, 63Cu, and 107Ag nuclei" J. Mod. Phys., Vol. 3, pp. 1830-1834, 2012.
K. Nakano, "Remarks on pionic constraints in the EMC effect"Phys. lett. G., Vol. 201, pp. L 201-L 207, 1991.
B. L. Birbrair, M. G. Ryskin, and V. I. Ryazanov, "Contribution of boundness and motion of nucleus to the EMC effect"Eur. Phys. J. A.,Vol. 25, No. 9, pp.275-282, 2005.
P. Hoodbhoy and R. L. Jaffe, "Quark Exchange in Nuclei and The European Muon Collaboration Effect" Phys. Rev. D., Vol. 35, No. 1, pp. 113-121, 1987.
G. Cattapan and L. Ferreira "The role of the ∆ in nuclear physics" Phys Rep., Vol. 362, pp. 303-407, 2002.
L. L. Frankfurt and M.I. Strikman."High-energy phenomena, short-range nuclear structure and QCD" Phys. Rep., Vol. 76, pp.215-347, 1981.