期刊
EUROPEAN PHYSICAL JOURNAL A
卷 49, 期 2, 页码 -出版社
SPRINGER
DOI: 10.1140/epja/i2013-13022-y
关键词
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资金
- Spanish Ministerio de Economa y Competitividad [FIS2011-28853-C02-01]
- FEDER of the EU
- Generalitat Valenciana in the program Prometeo [2009/090]
- EU Integrated Infrastructure Initiative Hadron Physics 3 Project [283286]
- Scientific and Technical Research Council(TUBITAK) [BIDEP-2219]
We use a recently developed formalism which generalizes Weinberg's compositeness condition to partial waves higher than s-wave in order to determine the probability of having a K pi component in the K* wave function. A fit is made to the K pi phase shifts in p-wave, from where the coupling of K* to K pi and the K pi loop function are determined. These ingredients allow us to determine that the K* is a genuine state, different from a K pi component, in a proportion of about 80%.
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