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Title: Unitary coupled channel analyses of the Lambda(1520) resonance
Author: Roca, L.
Sarkar, Sourav
Magas, Volodymyr
Oset Baguena, Eulogio
Keywords: Partícules (Física nuclear)
Teoria de camps (Física)
Particles (Nuclear physics)
Field theory (Physics)
Issue Date: 2006
Publisher: The American Physical Society
Abstract: We study the Λ ( 1520 ) resonance in a coupled-channel approach involving the π Σ ( 1385 ) , K Ξ ( 1530 ) , ¯¯¯¯ K N , and π Σ channels. Implementing unitarity in coupled channels, we make an analysis of the relative importance of the different mechanisms that contribute to the dynamical structure of this resonance. From experimental information on some partial wave amplitudes and constraints imposed by unitarity, we get a comprehensive description of the amplitudes and hence the couplings to the different channels. We test these amplitudes in different reactions like K − p → Λ π π , γ p → K + K − p , γ p → K + π 0 π 0 Λ , and π − p → K 0 K − p and find a fair agreement with the experimental data.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review C, 2006, vol. 73, núm. 4, p. 045208-1-045208-10
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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