2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/189225The Bs-Bsbar mixing parameter Delta Ms is studied in the MSSM with large tan beta. The recent Tevatron measurement of Delta Ms is used to constrain the MSSM parameter space. From this analysis the often neglected contribution to Delta Ms from the operator Q^SLL is found to be significant.8 pages, 6 figures, Published versionHigh Energy Physics - Phenomenologytext