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	Penguin pollution in the B0 → J/ψKS decay
掲載誌名	正式名：Journal of High Energy Physics
巻・号・頁	2007(03),009-0-009-9頁
著者・共著者	Hsiang-nan Li,Satoshi Mishima
発行年月	2007/03/02
概要	We present the most complete analysis of the penguin correction to the extraction of the standard-model parameter sin(2\phi_1) from the B^0 -> J/psi K_S decay up to leading power in 1/m_b and to next-to-leading order in \alpha_s, \phi_1 being the weak phase, m_b the b quark mass, and \alpha_s the strong coupling constant. The deviation \Delta S_{J/psi K_S} of the mixing-induced CP asymmetry from sin(2\phi_1) and the direct CP asymmetry A_{J/psi K_S} are both found to be of O(10^{-3}) in a formalism that combines the QCD-improved factorization and perturbative QCD approaches. The above results, different from those of O(10^{-4}) and of O(10^{-2}) obtained in the previous calculations, provide an important standard-model reference for verifying new physics from the B^0 -> J/psi K_S data.
DOI	10.1088/1126-6708/2007/03/009
arXiv ID	hep-ph/0610120
ORCIDのPut Code	71016421
PermalinkURL	http://inspirehep.net/record/728688