arXiv:hep-ph/0112303·v1·High Energy Physics — Phenomenology
B_d-Bbar_d Mixing and the B_d -> J/psi K_s Asymmetry in General SUSY Models
D. Becirevic🇮🇹 · M. Ciuchini🇮🇹 · E. Franco🇮🇹 · V. Gimenez🇪🇸 · G. Martinelli🇮🇹 · A. Masiero🇮🇹 · M. Papinutto🇮🇹 · J. Reyes🇮🇹 · L. Silvestrini🇮🇹
Abstract
We present a next-to-leading order determination of the gluino-mediated SUSY contributions to B_d-Bbar_d mixing and to the CP asymmetry a_{J/psi K_s} in the framework of the mass-insertion approximation. Using hadronic matrix elements recently computed on the lattice, we obtain improved constraints on the squark-mass splittings.
Comments: 17 pages, 13 figures