e+ e- pair production from γA reactions -: art. no. 044614

被引：111

作者：

Effenberger, M ^{[1
]}

Bratkovskaya, EL ^{[1
]}

Mosel, U ^{[1
]}

机构：

[1] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany

来源：

PHYSICAL REVIEW C | 1999年 / 60卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.60.044614

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：

We present a calculation of e(+)e(-) production in gamma A reactions at MAMI and TJNAF energies within a semiclassical Boltzmann-Uehling-Uhlenbeck transport model. Dilepton invariant mass spectra for gamma C, gamma Ca, and gamma Pb are calculated at 0.8, 1.5, and 2.2 GeV. We focus on observable effects of medium modifications of the rho and omega mesons. The in-medium widths of these mesons are taken into account in a dynamical, consistent way. We discuss the transport theoretical treatment of broad resonances. [S0556-2813(99)05609-5].

引用

页数：14

共 51 条

[41]

MASERA M, 1995, NUCL PHYS A, V590, pC93

[42]

MAZZONI MA, 1994, NUCL PHYS A, V566, pC95

[43] HADRONIC ZZ, W-W+, AND W+/-Z PRODUCTION WITH QCD CORRECTIONS AND LEPTONIC DECAYS [J].

OHNEMUS, J .

PHYSICAL REVIEW D, 1994, 50 (03) :1931-1945

[44] SUBTHRESHOLD PARTICLE-PRODUCTION IN HEAVY-ION COLLISIONS [J].

MOSEL, U .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 1991, 41 :29-54

[45]

OConnell HB, 1997, PROG PART NUCL PHYS, V39, P201, DOI 10.1016/S0146-6410(97)00044-6

[46] The spectral function of the rho meson in nuclear matter [J].

Peters, W ;

Post, M ;

Lenske, H ;

Leupold, S ;

Mosel, U .

NUCLEAR PHYSICS A, 1998, 632 (01) :109-127

[47]

Sakurai J. J, 1969, CURRENTS MESONS

[48] Pion-production in heavy-ion collisions at SIS energies [J].

Teis, S ;

Cassing, W ;

Effenberger, M ;

Hombach, A ;

Mosel, U ;

Wolf, G .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1997, 356 (04) :421-435

[49] PAIR PRODUCTION AND BREMSSTRAHLUNG OF CHARGED LEPTONS [J].

TSAI, YS .

REVIEWS OF MODERN PHYSICS, 1974, 46 (04) :815-851

[50] DILEPTON PRODUCTION IN HEAVY-ION COLLISIONS [J].

WOLF, G ;

BATKO, G ;

CASSING, W ;

MOSEL, U ;

NIITA, K ;

SCHAFER, M .

NUCLEAR PHYSICS A, 1990, 517 (3-4) :615-638

← 1 2 3 4 5 6 →