The reaction e(+)e(-) --> e(+)e(-)gamma*gamma* --> e(+)e(-)K(S)(0)K(S)(0) is studied with the L3 detector at LEP and the formation of the f(2)'(1525) resonance is observed, For an integrated luminosity of 114 pb(-1), 31+/-6 f(2)' events are found, Their angular distribution is consistent with a pure helicity two, The radiative width times the branching ratio is measured to be Gamma(gamma gamma)(f(2)')xBr(f(2)'--> K (K) over bar)=(0.093+/-0.018+/-0.022) keV. Only three events are found in the f(2)(1270)-a(2)(1320) mass region, consistent with destructive f(2)-a(2) interference in the (KSKS0)-K-0 final state. The mixing angle of the tensor meson nonet is determined to be theta=(29.4(-1.6)(+1.4))(0).

Study of the Ks(0)ks(0) Final-state In 2-photon Collisions / M., A., A., A., O., A., M., A., S., A., B., A., J., A., J., A., A., A., G., A., M. G., A., G., A., Q., A.n., H., A., V. P., A., T., A., D., A., A., A., T., A., T., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 363:(1995), pp. 118-126. [10.1016/0370-2693(95)01041-N]

Study of the Ks(0)ks(0) Final-state In 2-photon Collisions

BAGNAIA, Paolo;FACCINI, Riccardo;GENTILE, Simonetta;GIAGU, Stefano;LONGO, Egidio;ORGANTINI, Giovanni;
1995

Abstract

The reaction e(+)e(-) --> e(+)e(-)gamma*gamma* --> e(+)e(-)K(S)(0)K(S)(0) is studied with the L3 detector at LEP and the formation of the f(2)'(1525) resonance is observed, For an integrated luminosity of 114 pb(-1), 31+/-6 f(2)' events are found, Their angular distribution is consistent with a pure helicity two, The radiative width times the branching ratio is measured to be Gamma(gamma gamma)(f(2)')xBr(f(2)'--> K (K) over bar)=(0.093+/-0.018+/-0.022) keV. Only three events are found in the f(2)(1270)-a(2)(1320) mass region, consistent with destructive f(2)-a(2) interference in the (KSKS0)-K-0 final state. The mixing angle of the tensor meson nonet is determined to be theta=(29.4(-1.6)(+1.4))(0).
1995
01 Pubblicazione su rivista::01a Articolo in rivista
Study of the Ks(0)ks(0) Final-state In 2-photon Collisions / M., A., A., A., O., A., M., A., S., A., B., A., J., A., J., A., A., A., G., A., M. G., A., G., A., Q., A.n., H., A., V. P., A., T., A., D., A., A., A., T., A., T., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 363:(1995), pp. 118-126. [10.1016/0370-2693(95)01041-N]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/472638
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