The CC1 pi(+) to CCQE cross section ratio at accelerator energies

The MiniBooNE and the K2K collaborations have recently reported the ratio for the nu(mu)-induced charge current 1 pi(+) production cross section to the charged current-induced quasielastic lepton production cross section, i.e. R(E) = sigma(CC1 pi 1)/sigma(CCQE). . In this paper, we study, theoretically, in a local density approximation the effect of the nuclear medium in charged current quasielastic (CCQE) and charged current one pion production (CC1 pi(+)) processes for the nu(mu)-induced reaction in nuclei. The theoretical results have been compared with the results of experimental observations by the MiniBooNE and the K2K collaborations. The ratio R(E) for nu(mu)-induced reaction inwater for the proposed T2K experiment is also presented.