8412

7792

كارشناسي ارشد

ذرات بنيادي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك

1392

نه،58ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

منصور حقيقت

غلامرضا خسروي

28/10/92

بهروز ميرزا، فرهنگ لران

فيزيك

ID7792

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Z boson rare decays on noncommutative space time Vahideh Marzough v marzough@ ph iut ac ir Date ofsubmission 2013 09 22 Department of physics Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language PersianSupervisor Associate Prof Mansour Haghighat Mansour@cc iut ac irAbstractIn this thesis we give a brief review on the standard model in ordinary space The characteristics of Noncommutative Space Time and Standard Model inthis space are discussed In this framework there are two approaches In thefirst one the symmetry group is U 3 U 2 U 1 which can be reduced to thestandard model group via two spontaneoussymmetry breaking Besides the ordinary gauge Bosons two new gauge bosonsand two additional scalar particles appear in the NC Space due to symmetrybreaking In the second approach the group and the number of particles issimilar to the group and the number of particles in the ordinary standard model Meanwhile the NC fields through the Seiberg Witten maps are determined asfunctions of the NC parameter We consider the rare decays of the Z boson toLeptons antileptons and photon in the NC space Consequently we find abound on the NC parameter of the order of 20 GeV in such decay We alsoconsider the effect of Earth rotation on the amplitude and the decay rate of theZ boson and we show that they depend on the time and location of theaccelerator Keywords Non commutative space time Nc parameter Seiberg witten maps

منصور حقيقت

غلامرضا خسروي

بهروز ميرزا، فرهنگ لران