ep - p h / 97 03 25 3 v 1 6 M ar 1 99 7 IFA - 97 / 10 Partial - Wave Amplitudes and Resonances in p + p → π + π
نویسنده
چکیده
Partial wave amplitudes have been extracted from accurate data on pp → π−π+, combined with earlier data on pp → π0π0, by a method which incorporates the theoretical constraints of analyticity and crossing symmetry. The resulting solution gives a good fit to the annihilation data and is also consistent with the wealth of information in the crossed channel πN → πN . The partial wave amplitudes show evidence for resonances in all partial waves with J ≤ 5, at least one of which, a J = 0+ state, (and possibly another with J = 1) is unlikely to have a simple qq structure. 13.75.Cs, 11.80.Et, 14.40.Cs, 25.43.+t Typeset using REVTEX 1
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