Attenuation of {Lambda}(1520) Hyperons in near-threshold pA reactions
- Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)
In the framework of the nuclear spectral function approach for incoherent primary proton-nucleon and secondary pion-nucleon production processes we study the inclusive {Lambda}(1520)-hyperon production in the interaction of 2.83-GeV protons with nuclei. In particular, the A and momentum dependences of the absolute and relative {Lambda}(1520)-hyperon yields are investigated within the different scenarios for their in-medium width. Our model calculations show that the pion-nucleon production channel contributes distinctly to the 'low-momentum' {Lambda}(1520) creation both in light and heavy nuclei in the chosen kinematics and, hence, has to be taken into consideration on close examination of the dependences of the {Lambda}(1520)-hyperon yields on the target mass number with the aim to get information on their width in the medium. They also demonstrate that both the A dependence of the relative {Lambda}(1520)-hyperon production cross section and momentum dependence of the absolute {Lambda}(1520)-hyperon yield at incident energy of interest are appreciably sensitive to the {Lambda}(1520) in-medium width, which means that these observables may be an important tool to determine the above width.
- OSTI ID:
- 21426633
- Journal Information:
- Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 12 Vol. 73; ISSN 1063-7788; ISSN PANUEO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Absorption of {phi} mesons in near-threshold proton-nucleus reactions
Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons
Related Subjects
ATTENUATION
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FUNCTIONS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY NUCLEI
HYPERONS
INTERACTIONS
LAMBDA BARYONS
LAMBDA-1520 BARYONS
LIGHT NUCLEI
MASS NUMBER
MESONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PIONS
PROTON-NUCLEON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
SPECTRAL FUNCTIONS
STRANGE PARTICLES
YIELDS