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arXiv · 1202.5444

Lepton polarization effects in "Lambda_b -> Lambda l+l-" decay in family non-universal Z' model

T. M. Aliev·M. Savci
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Abstract

Possible manifestation of the family non-universal Z' boson effects in lepton polarization in rare, exclusive baryonic "Lambda_b -> Lambda l+l-" decay is examined. It is observed that the double lepton polarizations P_TT and P_NN are sensitive to the Z' contribution. Moreover, it is found that the zero position of the polarized forward-backward asymmetry A_FB^LL is shifted to the left compared to the standard model prediction. Therefore, determination of the zero value of A_FB^LL is quite an efficient tool for establishing new Z' boson, but also in discriminating various scenarios of the considered family non-universal Z' model.

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T. M. Aliev, M. Savci. 2012-02-24. Lepton polarization effects in "Lambda_b -> Lambda l+l-" decay in family non-universal Z' model. https://doi.org/10.1016/j.physletb.2012.11.013

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