ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We present an analysis of theK s 0 K s 0 system produced in the reaction π− p→K s 0 K s 0 n at 63 GeV based on ∼700 events in the kinematical region of |t|〈0.5 GeV2. We concentrate on masses between 1,200 and 1,600 MeV where a double maximum structure is observed. Performing an amplitude analysis in this mass interval we find thatS,D 0 andD + waves contribute to the mass spectrum at approximately equal strength. The peaks are attributed to spin 2 waves. However, we failed to explained them by interferingf(1270),A 2(1310) andf′(1520) resonances alone. While the first peak can be associated withf(1270)−A 2(1310) production, an additional tensor meson is needed with mass of ∼1410 MeV and a narrow width for a description of the second one. The analysis as well as the energy dependence deduced from some publishedK s 0 K s 0 mass spectra suggests this object to be dominantly produced by a natural parity exchange. Because the 2++ $$q\bar q$$ nonet is already complete the nature of the new tensor meson is an open question.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01572657
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