Experimental status of the ππ isoscalar S wave at low energy : f 0 ( 600 ) pole and scattering length
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چکیده
منابع مشابه
Low energy parameters of the KK and ππ scalar - isoscalar interactions
Low energy parameters of the KK and ππ scalar-isoscalar interactions Abstract Threshold expansions of the ππ and KK spin 0 and isospin 0 scattering amplitudes are performed. Scattering lengths, effective ranges and so–called volume parameters are evaluated. Good agreement with the existing experimental data for the ππ scalar–isoscalar amplitude is found. An importance of future accurate measure...
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The experimental isoscalar ππ → ππ S-wave amplitude squared below 1.75 GeV is characterized by a very broad structure f0(4001200) with two narrow dips due to its destructive interference with the f0(980) and f0(1500). The f0(1370) and f0(1710) do not show up clearly in the ππ → ππ S-wave amplitude due to their weak coupling to ππ. This paper is about the controversial nature of the broad f0(400...
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The experimental isoscalar ππ → ππ S-wave amplitude squared below 1.75 GeV is characterized by a very broad structure f0(4001200) with two narrow dips due to its destructive interference with the f0(980) and f0(1500). The f0(1370) and f0(1710) do not show up clearly in the ππ → ππ S-wave amplitude due to their weak coupling to ππ. This paper is about the controversial nature of the broad f0(400...
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