Shadowing in nuclear photoabsorption above the resonance region

被引：28

作者：

Bianchi, N ^{[1
]}

De Sanctis, E ^{[1
]}

Mirazita, M ^{[1
]}

Muccifora, V ^{[1
]}

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

来源：

PHYSICAL REVIEW C | 1999年 / 60卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.60.064617

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A model based on the hadronic fluctuations of the real photon is developed to describe the total photonucleon and photonuclear cross sections in the energy region above the nucleon resonances. The hadronic spectral function of the photon is derived including the finite width of vector-meson resonances and the quark-antiquark continuum. The shadowing effect is evaluated considering the effective interaction of the hadronic component with the bound nucleons within a Glauber-Gribov multiple scattering theory. The low energy onset of the shadowing effect is interpreted as a possible signature of a modification of the hadronic spectral function in the nuclear medium. A decrease of the rho-meson mass in nuclei is suggested for a better explanation of the experimental data. [S0556-2813(99)01912-3].

引用

页数：7

共 51 条

[31] TOTAL PHOTOPRODUCTION CROSS SECTION OF HADRONS ON NUCLEI [J].

HEYNEN, V ;

MEYER, H ;

NAROSKA, B ;

NOTZ, D .

PHYSICS LETTERS B, 1971, B 34 (07) :651-&

[32] Probing the ρ0 mass modification in the subthreshold region on 3He [J].

Huber, GM ;

Lolos, GJ ;

Papandreou, Z .

PHYSICAL REVIEW LETTERS, 1998, 80 (24) :5285-5288

[33] FORWARD PHOTOPRODUCTION OF VECTOR MESONS FROM HYDROGEN AT ENERGIES FROM 6.5 TO 17.8 GEV [J].

JONES, WG ;

KREINICK, D ;

ANDERSON, R ;

GUSTAVSON, D ;

JOHNSON, J ;

RITSON, D ;

MURPHY, F ;

GETTNER, M ;

WEINSTEIN, R .

PHYSICAL REVIEW LETTERS, 1968, 21 (08) :586-+

[34] Current correlation functions, QCD sum rules and vector mesons in baryonic matter [J].

Klingl, F ;

Kaiser, N ;

Weise, W .

NUCLEAR PHYSICS A, 1997, 624 (04) :527-563

[35] ρ-meson properties at finite nuclear density [J].

Kondratyuk, LA ;

Sibirtsev, A ;

Cassing, W ;

Golubeva, YS ;

Effenberger, M .

PHYSICAL REVIEW C, 1998, 58 (02) :1078-1085

[36] Evidence for ρ0 mass modification in the 3He(γ,ρ0)ppn reaction [J].

Lolos, GJ ;

Huber, GM ;

Papandreou, Z ;

Farzanpay, F ;

Iurescu, M ;

Weinerman, A ;

Garino, G ;

Maruyama, K ;

Maeda, K ;

Shinozaki, A ;

Terasawa, T ;

Yamazaki, H ;

Emura, T ;

Hirosawa, H ;

Niwa, K ;

Yamashita, H ;

Endo, S ;

Miyamoto, K ;

Sumi, Y ;

Leone, A ;

Perrino, R .

PHYSICAL REVIEW LETTERS, 1998, 80 (02) :241-244

[37] PHOTOPRODUCTION OF NEUTRAL RHO MESONS [J].

MCCLELLAN, G ;

MISTRY, N ;

MOSTEK, P ;

OGREN, H ;

SILVERMAN, A ;

SWARTZ, J ;

TALMAN, R .

PHYSICAL REVIEW D, 1971, 4 (09) :2683-+

[38] HIGH-ENERGY PHOTOPRODUCTION OF RHO0 MESONS FROM HYDROGEN AND DEUTERIUM [J].

MCCLELLAN, G ;

MISTRY, N ;

MOSTEK, P ;

OGREN, H ;

SILVERMA.A ;

SWARTZ, J ;

TALMAN, R ;

GOTTFRIE.K ;

LEBEDEV, AI .

PHYSICAL REVIEW LETTERS, 1969, 22 (08) :374-+

[39] EXPERIMENTAL-STUDY OF NUCLEAR SHADOWING IN PHOTOPRODUCTION [J].

MICHALOWSKI, S ;

ANDREWS, D ;

EICKMEYER, J ;

GENTILE, T ;

MISTRY, N ;

TALMAN, R ;

UENO, K .

PHYSICAL REVIEW LETTERS, 1977, 39 (12) :737-740

[40] Total hadronic photoabsorption on carbon and lead in the shadowing threshold region [J].

Mirazita, M ;

Avakian, H ;

Bianchi, N ;

Deppman, A ;

DeSanctis, E ;

Gyurjyan, V ;

Muccifora, V ;

Polli, E ;

Rossi, P ;

Burgwinkel, R ;

Hannappel, J ;

Klein, F ;

Menze, D ;

Schwille, W ;

Wehnes, F .

PHYSICS LETTERS B, 1997, 407 (3-4) :225-228

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