New physics effects in charm meson decays involving c→u < sup > l+ < /sup > < sup > l- < /sup > (li∓lj±) transitions

Abstract

We study the effect of the scalar leptoquark and Z′ boson on the rare decays of the D mesons involving flavour changing transitions c→ul+l-(li∓lj±). We constrain the new physics parameter space using the branching ratio of the rare decay mode D0→ μ+μ- and the D0- D¯ 0 oscillation data. We compute the branching ratios, forward–backward asymmetry parameters and flat terms in D+ (0)→ π+ (0)μ+μ- processes using the constrained parameters. The branching ratios of the lepton flavour violating D meson decays, such as D0→μe,τe and D+ (0)→ π+ (0)μ-e+ are also investigated.