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	Revisiting rescattering contributions to B(s)bar → D(s)(*)M decays
掲載誌名	正式名：Journal of High Energy Physics ISSNコード：/1029-8479
出版社	Springer Science and Business Media LLC
巻・号・頁	2022(01),147-0-147-27頁
著者・共著者	Motoi Endo,Syuhei Iguro,Satoshi Mishima
発行年月	2022/01/26
概要	Abstract Motivated by the reported discrepancies between experimental data and Standard Model predictions for the branching ratios of the color-allowed decays $$ \overline{B} $$0 → D(*)+K− and $$ {\overline{B } }_s^0 $$ → $$ {D}_s^{\left(\ast \right)+}{\pi}^{-} $$, we study final-state rescattering effects on $$ \overline{B} $$(s) → $$ {D}_{(s)}^{\left(\ast \right)}P $$ and $$ \overline{B} $$(s) → D(s)V, where P(V) is a light pseudoscalar (vector) meson. We consider quasi-elastic rescatterings in the framework of SU(3) and U(3) flavor symmetries, and find that the effects cannot explain the measured branching ratios of the color-allowed and color-suppressed decays simultaneously. We also perform global fits to the $$ \overline{B} $$(s) → $$ {D}_{(s)}^{\left(\ast \right)}P $$ and $$ \overline{B} $$(s) → D(s)V data, allowing for new physics contributions to the Wilson coefficient a1 associated with the color-allowed tree amplitudes. It is shown that the fits prefer a downward shift of $$ \mathcal{O} $$(10%) in a1 even in the presence of the quasi-elastic rescattering contributions.
DOI	10.1007/jhep01(2022)147
PermalinkURL	https://link.springer.com/content/pdf/10.1007/JHEP01(2022)147.pdf
researchmap用URL	https://link.springer.com/article/10.1007/JHEP01(2022)147/fulltext.html