A search for rare charmless decays of B-d(0) and B-s(0) mesons has been performed in the exclusive channels B-d(s)(0)-->eta eta, B-d(s)(0)-->eta pi(0) and B-d(s)(0)-->pi(0) pi(0). The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B-d(0)--eta eta) < 4.1 x 10(-4), Br(B-s(0)-->eta eta) < 1.5 x 10(-3), Br(B-d(0)-->eta pi(0)) < 2.5 x 10(-4), Br(B-s(0)-->eta pi(0)) < 1.0 x 10(-3), Br(B-d(0)-->pi(0) pi(0)) < 6.0 x 10(-5), Br(B-s(0)-->pi(0) pi(0)) < 2.1 x 10(-4). These are the first experimental limits on B-d(0)-->eta eta and on the B-s(0) neutral charmless modes.

Search For Neutral Charmless B-decays At Lep / 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, H. ANDERHUB, V. P. ANDREEV, T. ANGELESCU, D. ANTREASYAN, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 363:(1995), pp. 127-136. [10.1016/0370-2693(95)01042-O]

Search For Neutral Charmless B-decays At Lep

ADRIANI, OSCAR;D'ALESSANDRO, RAFFAELLO;M. LENTI;
1995

Abstract

A search for rare charmless decays of B-d(0) and B-s(0) mesons has been performed in the exclusive channels B-d(s)(0)-->eta eta, B-d(s)(0)-->eta pi(0) and B-d(s)(0)-->pi(0) pi(0). The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B-d(0)--eta eta) < 4.1 x 10(-4), Br(B-s(0)-->eta eta) < 1.5 x 10(-3), Br(B-d(0)-->eta pi(0)) < 2.5 x 10(-4), Br(B-s(0)-->eta pi(0)) < 1.0 x 10(-3), Br(B-d(0)-->pi(0) pi(0)) < 6.0 x 10(-5), Br(B-s(0)-->pi(0) pi(0)) < 2.1 x 10(-4). These are the first experimental limits on B-d(0)-->eta eta and on the B-s(0) neutral charmless modes.
1995
363
127
136
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;H....espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/772821
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