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Study of unstable particle through the spectral function inO(4) ϕ4 theory

✍ Scribed by N. Ishizuka; T. Yamazaki

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 262 KB
Volume: 119
Category: Article
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(03)01526-3

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✦ Synopsis

We test application of the maximum entropy method to decompose the states contributing to the unstable cr correlation function through the spectral function in the four dimensional O(4) $* theory. Reliable results are obtained for the ~7 mass and two-particle rrrr state energy using only the o correlation function. We also find that the property of the u particle is different between the unstable (m,/m, > 2) and stable (m,/m, < 2) cases.

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