13978

1241 دكتري

دكتري

ذرات بنيادي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك

1397

بيست، ۲۲۷ص.: مصور، جدول، نمودار

1397/07/23

كتابنامه

فيزيك

فيزيك

ID1241 دكتري

Flavor changing neutral current of B meson decays in light cone chromodynamic LCSR and correspondence between chromodynamic and gravitional AdS space AdS QCD Samira Momeni Hassan Abadi samira momeni@ph iut ac ir 2018 Department of Physics Isfahan University of Technology Isfahan 84156 83111 Iran University Code IUT 77142 Degree Ph D Language Farsi supervisor Dr Gh R Khosravi rezakhosravi @ cc iut ac ir Abstract In this thesis avor changing neutral current FCNC processes in semileptonic B de cays including the heavy to light transitions B a1 B K1 and B K are discussed in the context of the standard model SM The theoretical description of thesemileptonic decays is relatively simple and provides much information about the strongforces that bind the quarks and gluons into hadrons The FCNC semileptonic decays can beperformed via the electroweak box and penguin diagrams which are sensitive to new physics NP contributions To make predictions for the branching ratio value dilepton invariantmass spectrum forward backward asymmetry and double lepton polarization that provideus a lot of useful information investigation of transition form factors is needed In particlephysics reliable calculations of heavy to light transition form factors of semileptonic B de cays are very important since they are also used to determine the amplitude of non leptonicB decays evaluate the Cabibbo Kobayashi Maskawa CKM matrix elements as well as totest various properties of the SM We calculate the form factors of the aforementioned ex clusive decays in the frame work of two approaches 1 the light cone sum rules LCSR

غلامرضا خسروي

احمد شيرزاد

ممتحن مدعو: منصور حقيقت، محمد زبرجد; ممتحن داخلي: بهروز ميرزا