The pion electromagnetic form factor in the time-like energy range
Physics Letters BPublished 1 March 1989
D. Bisello, G. Busetto, A. Pereiro Castro, C. Milani, M. Nigro, L. Pescara
Citations103
SJR quartileQ1
SJR score1.38
SNIP1.26
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Abstract
The e+e− → π+π− cross section has been measured from about 280 events (an order of magnitude more than the previous world statistics) in the energy interval 1.35 ⩽ s ⩽ 2.4 GeV with the DM2 detector at DCI. The pion squared form factor |Fπ|2 shows a deep minimum around 1.6 GeV/c2 and is better fit under the hypothesis of two ϱ-like resonance ⋍0.25 GeV/c2 wide with 1.42 and 1.77 GeV/c2 masses.
Keywords
Physics and Astronomy
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