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How much space is left for a new family of fermions?
PHYSICAL REVIEW D, no. 11 (2009)
Abstract
We perform an exploratory study of the allowed parameter range for the CKM-like mixing of hypothetical quarks of a fourth generation. As experimental constraints we use the tree-level determinations of the 3x3 Cabibbo-Kobayashi-Maskawa (CKM) elements and flavor-changing neutral current (FCNC) processes (K, D, B-d, B-s mixing and the decay...More
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