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	The Standard Model confronts CP violation in D0 → π+π- and D0 → K+K-
掲載誌名	正式名：Journal of High Energy Physics
巻・号・頁	2012(05),140-0-140-21頁
著者・共著者	Enrico Franco,Satoshi Mishima,Luca Silvestrini
発行年月	2012/05/29
概要	The recently measured direct CP asymmetries in the processes D0→π+π− and D0→K+K− show a significant deviation from the naive Standard Model expectation. Using a general parameterization of the decay amplitudes, we show that the measured branching ratios imply large SU(3) breaking and large violations of the naive 1/Nc counting. Furthermore, rescattering constrains the I=0 amplitudes in the ππ and KK channels. Combining all this information, we show that, with present errors, the observed asymmetries are marginally compatible with the Standard Model. Improving the experimental accuracy could lead to an indirect signal of new physics.
DOI	10.1007/JHEP05(2012)140
arXiv ID	arXiv:1203.3131
ORCIDのPut Code	71016409
PermalinkURL	http://inspirehep.net/record/1093750