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K+ -> pi+ nu nu(bar) and FCNC from non-universal Z' bosons | | Xiao-Gang He
; G. Valencia
; | | Date: |
26 Apr 2004 | | Journal: | Phys.Rev. D70 (2004) 053003 | | Subject: | hep-ph | | Abstract: | Motivated by the E787 and E949 result for K+ -> pi+ nu nu(bar) we examine the effects of a new non-universal right-handed Z’ boson on flavor changing processes. We place bounds on the tree-level FCNC from K-K(bar) and B-B(bar) mixing as well as from the observed CP violation in kaon decay. We discuss the implications for K -> pi nu nu(bar), B -> X nu nu(bar) and B -> tau+ tau-. We find that existing bounds allow substantial enhancements in the K+ -> pi+ nu nu(bar) rate, particularly through a new one-loop Z’ penguin operator. | | Source: | arXiv, hep-ph/0404229 | | Services: | Forum | Review | PDF | Favorites | |
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