XIAO-GANG HEValencia, G.G.Valencia2018-09-102018-09-102004http://www.scopus.com/inward/record.url?eid=2-s2.0-84927714587&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/309800Motivated by the E787 and E949 result for K+ → π+ νν we examine the effects of a new nonuniversal right-handed Z′ boson on flavor changing processes. We place bounds on the tree-level flavor-changing neutral current from K - K̄ and B - B̄ mixing as well as from the observed CP violation in kaon decay. We discuss the implications for K → πνν, B → Xνν and B → τ+τ-. We find that the existing bounds allow substantial enhancements in the K+ → π+ νν rate, particularly through a new one-loop Z′ penguin operator.[SDGs]SDG16journal article10.1103/PhysRevD.70.0530032-s2.0-84927714587