About three million hadronic decays of the Z collected by ALEPH in the years 1991 to 1994 are used to search for anomalous CP violation beyond the Standard Model in the decay Z → bb̄g. The study is performed by analyzing angular correlations between the two quarks and the gluon in three-jet events and by measuring the differential two-jet rate. No signal of CP violation is found. For the combinations of anomalous CP violating couplings, ĥb = ĥAbgVh - ĥVbgAb and hb* = √ĥVb2 + ĥAb2, limits of | ĥb | < 0.59 and hb* < 3.02 are given at 95% CL.

Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1996). Search for CP violation in the decay Z → b b̄ g. PHYSICS LETTERS. SECTION B, 384(1-4), 365-376 [10.1016/0370-2693(96)00927-6].

Search for CP violation in the decay Z → b b̄ g

CARPINELLI, Massimo;
1996

Abstract

About three million hadronic decays of the Z collected by ALEPH in the years 1991 to 1994 are used to search for anomalous CP violation beyond the Standard Model in the decay Z → bb̄g. The study is performed by analyzing angular correlations between the two quarks and the gluon in three-jet events and by measuring the differential two-jet rate. No signal of CP violation is found. For the combinations of anomalous CP violating couplings, ĥb = ĥAbgVh - ĥVbgAb and hb* = √ĥVb2 + ĥAb2, limits of | ĥb | < 0.59 and hb* < 3.02 are given at 95% CL.
Articolo in rivista - Articolo scientifico
Physics
English
1996
384
1-4
365
376
none
Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1996). Search for CP violation in the decay Z → b b̄ g. PHYSICS LETTERS. SECTION B, 384(1-4), 365-376 [10.1016/0370-2693(96)00927-6].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390232
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