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. ACCIARRI, A. ADAM, O. ADRIANI, M. AGUILARBENITEZ, S. AHLEN, B. ALPAT, J. ALCARAZ, J. ALLABY, A. ALOISIO, G. ALVERSON, M. G. ALVIGGI, G. AMBROSI, Q. AN, H. ANDERHUB, V. P. ANDREEV, T. ANGELESCU, D. ANTREASYAN, A. AREFIEV, T. AZEMOON, T. AZIZ, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 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

ADRIANI, OSCAR;D'ALESSANDRO, RAFFAELLO;M. LENTI;
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
363
118
126
M. ACCIARRI;A. ADAM;O. ADRIANI;M. AGUILARBENITEZ;S. AHLEN;B. ALPAT;J. ALCARAZ;J. ALLABY;A. ALOISIO;G. ALVERSON;M. G. ALVIGGI;G. AMBROSI;Q....espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/772820
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