Eur. Phys. J. A (2006) 28: 139-145
https://doi.org/10.1140/epja/i2006-10052-6

Nuclear Structure and Reactions

A-dependence of the γ- and p-induced production of the Λ(1520) from nuclei

¹ Departamento de Fısica Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Aptd. 22085, 46071, Valencia, Spain
² Departamento de Fısica, Universidad de Murcia, E-30100, Murcia, Spain

Received: 31 January 2006
Accepted: 11 May 2006
Published online: 22 June 2006

Abstract

Using results of a recent calculation of the Λ(1520) in the nuclear medium, which show that the medium width is about five times the free width, we study the A-dependence of the Λ(1520) production cross-section in the reactions γA → K ⁺Λ(1520)A ^′ and pA → pK ⁺Λ(1520)A ^′. We find a sizable A-dependence in the ratio of the nuclear cross-sections for heavy nuclei with respect to a light one due to the large value of the Λ(1520) width in the medium, showing that devoted experiments, easily within reach in present facilities, can provide good information on that magnitude by measuring the cross-sections studied here.