arXiv:1111.0863v2 [hep-ph] 28 Dec 2011 ¯ ν induced ¯ K production off the nucleon M. Rafi Alam, 1 I. Ruiz Simo, 2, 3 M. Sajjad Athar, 1 and M. J. Vicente Vacas 2 1 Department of Physics, Aligarh Muslim University, Aligarh-202 002, India 2 Departamento de F´ ısica Te´ orica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigaci´ on de Paterna, E-46071 Valencia, Spain 3 Departamento de F´ ısica At´ omica Molecular y Nuclear, Universidad de Granada, E-18071 Granada, Spain Abstract The charged current antikaon production off nucleons induced by antineutrinos is studied at low and intermediate energies. We extend here our previous calculation on kaon production induced by neutrinos. We have developed a microscopic model that starts from the SU(3) chiral Lagrangians and includes background terms and the resonant mechanisms associated to the lowest lying resonance in the channel, namely, the Σ ∗ (1385). Our results could be of interest for the background estimation of various neutrino oscillation experiments like MiniBooNE and SuperK. They can also be helpful for the planned ¯ ν −experiments like MINERν A, NOν A and T2K phase II and for beta-beam experiments with antineutrino energies around 1 GeV. PACS numbers: 25.30.Pt,13.15.+g,12.15.-y,12.39.Fe 1