پديد آورنده :
صادقي، صفورا
عنوان :
تحليل و بررسي واپاشي نيمه لپتوني مزون ﴿B﴾Bs به مزون هاي تانسوري از طريق قانون QCD
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
ذرات بنيادي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك
صفحه شمار :
ده، 65ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
غلامرضا خسروي
استاد مشاور :
منصور حقيقت
توصيفگر ها :
برهم كنش ضعيف , تانسور مزون , مدهاي واپاشي , هادرون , سه نقطه , تابع همبستگي , بسط ضرب عملگر
تاريخ نمايه سازي :
11/3/94
استاد داور :
بهروز ميرزا، مسلم زارعي
تاريخ ورود اطلاعات :
1396/10/02
چكيده انگليسي :
ABSTRACTAnalysis of semileptonic decays of B Bs to light tensor meson in QCD BY SAFOURA SADEGHIStudy of B meson is of importance for fundamental particle s physicists The reason of this im portance is that the B meson which owns long life would just decay through weak interactions So important physical cases such as CP violation inverse time violation and polarization asym metry in decays would be investigated by studying the decay of B meson Also since the exactvalues of matrix s elements of CKM are determined only in weak interactions investigating thedecay of B meson is so useful Also we could conclude that the experimental results are in goodagreement with theoretical results by investigating the characteristics of the tensor meson In fact theoretical calculations on physical parameters of tensor mesons and comparison of their decay smodes with scalar semi scalar pseudo scalar vector and pseudo vector mesons and also compar ison of these calculations with experimental data could give us important information about theirnatures QCD sum rule is used for investigation of tensor s characteristics Lots of characteristicsof hadrons are calculated by means of this rule and most of the times these results are consider ably in good agreement with the experimental results QCD sum rule is a reliable and suitable toolfor estimating of unknown hadron s parameters The aim of this study is investigating the semi leptonic decays of Bs B meson in the framework of the three point QCD sum rule Consideringthe quark condensate contributions the relevant form factors of these transitions are estimated The branching ratios of these channel modes are also calculated at different values of the contin uum thresholds of the tensor mesons and compared with the obtained data for other approaches The main idea in this study is using meson s current correlation function with the help of operatorproduct expansion OPE Keywords B meson weak interaction decay tensor meson decay s modes hadron semi leptonic three point QCD correlation function operator product expansion
استاد راهنما :
غلامرضا خسروي
استاد مشاور :
منصور حقيقت
استاد داور :
بهروز ميرزا، مسلم زارعي
