ミシマ　サトシ   MISHIMA Satoshi   三島　智    所属   埼玉医科大学  医学部 教養教育    職種   専任講師
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読あり
表題	Large electroweak penguin contribution in B → Kπ and ππ decay modes
掲載誌名	正式名：Physical Review D
巻・号・頁	70,094024-1-094024-15頁
著者・共著者	Satoshi Mishima,Tadashi Yoshikawa
発行年月	2004/11/16
概要	We discuss about a possibility of large electroweak penguin contribution in B -> K pi and pi pi from recent experimental data. The experimental data may be suggesting that there are some discrepancies between the data and theoretical estimation in the branching ratios of them. In B -> K pi decays, to explain it, a large electroweak penguin contribution and large strong phase differences seem to be needed. The contributions should appear also in B -> pi pi. We show, as an example, a solution to solve the discrepancies in both B -> K pi and B -> pi pi. However the magnitude of the parameters and the strong phase estimated from experimental data are quite large compared with the theoretical estimations. It may be suggesting some new physics effects are including in these processes. We will have to discuss about the dependence of the new physics. To explain both modes at once, we may need large electroweak penguin contribution with new weak phases and some SU(3) breaking effects by new physics in both QCD and electroweak penguin type processes.
DOI	10.1103/PhysRevD.70.094024
arXiv ID	hep-ph/0408090
ORCIDのPut Code	71016399
PermalinkURL	http://inspirehep.net/record/656030