Study of the CKM angleγsensitivity using flavor untagged B_(s)^(0)→D^(+)^(0)Ф decays  

作　　者：D.Ao D.Decamp W.B.Qian S.Ricciardi H.Sazak S.T’Jampens V.Tisserand Z.R.Wang Z.W.Yang S.N.Zhang X.K.Zhou 敖冬;D.Decamp;钱文斌;S.Ricciardi;H.Sazak;S.T’Jampens;V.Tisserand;王子睿;杨振伟;张舒楠;周晓康(University of Chinese Academy of Sciences,Beijing 100049,China;UnivGrenoble Alpes,UnivSavoie Mont Blanc,CNRS,IN2P3-LAPP,Annecy,France;STFC Rutherford Appleton Laboratory,Didcot,United Kingdom;UniversitéClermont Auvergne,CNRS/IN2P3,LPC,Clermont-Ferrand,France;Center for High Energy Physics,Tsinghua University,Beijing 100084,China;School of Physics State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China)

机构地区：[1]University of Chinese Academy of Sciences,Beijing 100049,China [2]UnivGrenoble Alpes,UnivSavoie Mont Blanc,CNRS,IN2P3-LAPP,Annecy,France [3]STFC Rutherford Appleton Laboratory,Didcot,United Kingdom [4]UniversitéClermont Auvergne,CNRS/IN2P3,LPC,Clermont-Ferrand,France [5]Center for High Energy Physics,Tsinghua University,Beijing 100084,China [6]School of Physics State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China

出　　处：《Chinese Physics C》2021年第2期56-92,共37页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation o f China(NSFC)(11925504,11975015);the 65^(th) batch of China Postdoctoral Fund;the Fundamental Research Funds for the Central Universities,CNRS/IN2P3(France),and STFC(United Kingdom)national agencies.Part of this work was supported through exchanges between Annecy,Beijing,and Clermont-Ferrand,by the France China Particle Physics Laboratory(i.e.FCPPL)。

摘　　要：A sensitivity study on the measurement of the CKM angle γ from B_(s)^(0)→D^(+)^(0)Ф decays is conducted us-ing the D-meson reconstructed in the quasi flavour-specific modes Kπ,K3π,and Kππ^(0),as well as CP-eigenstate modes KK and m,where the notation DO corresponds toa D0 or D0 meson.The LHCb experiment is presented as a use case.A statistical uncertainty of approximately 8°-19°can be achieved with the pp collision data collcted in the LHCb experiment from 2011 to 2018.The sensitivity to r should be of the order 3°-8°after accumulating 23 fb^(-1) of pp collision data by 2025,whereas it is expected to improve further by 300 fb^(-1) by the second half of the 2030 decade.The accuracy is dependent on the strong parameters r and og,which together with ydescribe the interfer-ence between the leading ampliudes of the B_(s)^(0)→D^(+)^(0)Ф decays.

关 键 词：sensitivity study CKM angleyγ B_(s)^(0)→D^(+)^(0)Фdecays 

分 类 号：O572.33[理学—粒子物理与原子核物理]