Mass limits for scalar and gauge leptoquarks from $ K_L^0 \to e^{\mp} μ^{\pm}, B^0 \to e^{\mp} τ^{\pm} $ decays

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dc.creatorSmirnov, A. D.
dc.date2007-05-02
dc.date.accessioned2026-07-07T10:59:54Z
dc.date.available2026-07-07T10:59:54Z
dc.descriptionThe contributions of scalar and gauge leptoquarks into widths of $K^0_L \to e^{\mp} μ^{\pm}$, $B^0 \to e^{\mp} τ^{\pm}$ decays are calculated in the models with the vectorlike and chiral four color symmetry and with the Higgs mechanism of the quark-lepton mass splitting. From the current data on $K^0_L$ and $B^0$ decays the mass limits for scalar and chiral leptoquarks and the updated vector leptoquark mass limits are obtained. It is shown that unlike the gauge leptoquarks the scalar leptoquark mass limits are weak, of order or below their direct mass limits. The search for such scalar leptoquarks at LHC and the further search for leptonic decays $ B^0 \to l^+_i l^-_j $ are of interest.
dc.description9 pages, 2 figures. To be published in Mod. Phys. Lett. A
dc.identifierhttps://arxiv.org/abs/0705.0308
dc.identifierhttp://arxiv.org/abs/0705.0308
dc.identifierMod.Phys.Lett.A22:2353-2363,2007
dc.identifierdoi:10.1142/S0217732307024401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187568
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMass limits for scalar and gauge leptoquarks from $ K_L^0 \to e^{\mp} μ^{\pm}, B^0 \to e^{\mp} τ^{\pm} $ decays
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