NAGIOS: RODERIC FUNCIONANDO

Photon induced Lambda (1520) production and the role of the K* exchange

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Photon induced Lambda (1520) production and the role of the K* exchange

Mostra el registre complet de l'element

Visualització (300.5Kb)

Toki, Hiroshi; García Recio, Carmen; Nieves Pamplona, Juan Miguel

Aquest document és un/a article, creat/da en: 2008

We study the photon induced Lambda(1520) production in the effective Lagrangian method near threshold, E(gamma)(LAB)<= 2 GeV, and in the quark-gluon string model at higher energies 3 GeV <= E(gamma)(LAB)<= 5 GeV. In particular, we study the role of the K(*) exchange for the production of Lambda(1520) within the SU(6) Weinberg-Tomozowa chiral unitary model proposed by Garcia-Recio, Nieves, and Salcedo [Phys. Rev. D 74, 034025 (2006)]. The coupling of the Lambda(1520) resonance to the N (K) over bar* pair, which is dynamically generated, turns out to be relatively small and, thus, the K exchange mechanism dominates the reaction. In the higher energy region, where experimental data are available, the quark-gluon string mechanism with the K Regge trajectory reproduces both the energy and the angular distribution dependences of the Lambda(1520) photoproduction reaction.

Veure al catàleg Trobes