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-->b(b) over barg$. The study is performed by analyzing angular correlations between the two quarks and the gluon in three-jet events and by measuring the differential two-jet rate. No signal of CP violation is found. For the combinations of anomalous CP violating couplings, (h) over cap(b)$=<(h)over cap (Ab)g(Vb)>-<(h)over cap (Vb)g(Ab)> and h(b)*=root<(h)over cap (2)(Vb)>+<(h)over cap (2)(Ab)>, limits of \(h) over cap(b)$\<0.59 and h(b)*<3.02 are given at 95% CL.

Search for CP violation in the decay Z->b(b)over-bar-g / Buskulic, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., Lucotte, A., Minard, M.N., Nief, J.Y., Odier, P., Pietrzyk, B., Casado, M.P., Chmeissani, M., Crespo, J.M., Delfino, M., Efthymiopoulos, I., Fernandez, E., Fernandez Bosman, M., Garrido, L.l., Juste, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 384:1-4(1996), pp. 365-376. [10.1016/0370-2693(96)00927-6]

Search for CP violation in the decay Z->b(b)over-bar-g

CREANZA, Donato Maria;IASELLI, Giuseppe;Maggi, Giorgio Pietro;
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-->b(b) over barg$. The study is performed by analyzing angular correlations between the two quarks and the gluon in three-jet events and by measuring the differential two-jet rate. No signal of CP violation is found. For the combinations of anomalous CP violating couplings, (h) over cap(b)$=<(h)over cap (Ab)g(Vb)>-<(h)over cap (Vb)g(Ab)> and h(b)*=root<(h)over cap (2)(Vb)>+<(h)over cap (2)(Ab)>, limits of \(h) over cap(b)$\<0.59 and h(b)*<3.02 are given at 95% CL.
1996
https://www.sciencedirect.com/science/article/abs/pii/0370269396009276?via%3Dihub
Search for CP violation in the decay Z->b(b)over-bar-g / Buskulic, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., Lucotte, A., Minard, M.N., Nief, J.Y., Odier, P., Pietrzyk, B., Casado, M.P., Chmeissani, M., Crespo, J.M., Delfino, M., Efthymiopoulos, I., Fernandez, E., Fernandez Bosman, M., Garrido, L.l., Juste, A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 384:1-4(1996), pp. 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/11589/7030
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