A search for the decays B-d,s(0) --> gamma gamma in 2.95 million hadronic Z decays has been performed using the L3 detector at LEP. No candidates are found in the signal region and upper limits have been set on the branching ratios: Br(B-d(0) --> gamma gamma) < 3.9 x 10(-5) and Br(B-s(0) --> gamma gamma) < 14.8 x 10(-5) at 90% CL. These are the first limits set on these exclusive rare decays.

Search For the Decays B-d(0)-]gamma-gamma and B-s(0)-]gamma-gamma / Acciarri, M., Adam, A., Adriani, O., Aguilarbenitez, M., Ahlen, S., Alpat, B., Alcaraz, J., Allaby, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., Anderhub, H., Andreev, V.P., Angelescu, T., Antreasyan, D., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 363:(1995), pp. 137-144. [10.1016/0370-2693(95)01224-E]

Search For the Decays B-d(0)-]gamma-gamma and B-s(0)-]gamma-gamma

ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CHIEFARI, GIOVANNI;L. LISTA;MEROLA, LEONARDO;NAPOLITANO, MARCO;PATRICELLI, SERGIO;SCIACCA, CRISOSTOMO;
1995

Abstract

A search for the decays B-d,s(0) --> gamma gamma in 2.95 million hadronic Z decays has been performed using the L3 detector at LEP. No candidates are found in the signal region and upper limits have been set on the branching ratios: Br(B-d(0) --> gamma gamma) < 3.9 x 10(-5) and Br(B-s(0) --> gamma gamma) < 14.8 x 10(-5) at 90% CL. These are the first limits set on these exclusive rare decays.
1995
Search For the Decays B-d(0)-]gamma-gamma and B-s(0)-]gamma-gamma / Acciarri, M., Adam, A., Adriani, O., Aguilarbenitez, M., Ahlen, S., Alpat, B., Alcaraz, J., Allaby, J., Aloisio, A., Alverson, G., Alviggi, M., Ambrosi, G., Anderhub, H., Andreev, V.P., Angelescu, T., Antreasyan, D., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 363:(1995), pp. 137-144. [10.1016/0370-2693(95)01224-E]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/478854
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