2 00 8 The X ( 2175 ) as a resonant state of the φKK̄ system
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چکیده
We perform a Faddeev calculation for the three mesons system, φKK̄, taking the interaction between two pseudoscalar mesons and between a vector and a pseudoscalar meson from the chiral unitary approach. We obtain a neat resonance peak around a total mass of 2150 MeV and an invariant mass for the KK̄ system around 970 MeV, very close to the f0(980) mass. The state appears in I=0 and qualifies as a φf0(980) resonance. No state is seen in I=1. This finding provides a natural explanation for the recent state found at BABAR and BES, the X(2175), which decays into φf0(980).
منابع مشابه
4 N ov 2 00 8 X ( 2175 ) as a resonant state of the φKK̄ system
We perform a Faddeev calculation for the three mesons system, φKK̄, taking the interaction between two pseudoscalar mesons and between a vector and a pseudoscalar meson from the chiral unitary approach. We obtain a neat resonance peak around a total mass of 2150 MeV and an invariant mass for the KK̄ system around 970 MeV, very close to the f0(980) mass. The state appears in I=0 and qualifies as a...
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تاریخ انتشار 2009