Physics Colloquium - Zhiyue Ding & Kranti Gunthoti

DateNovember 1, 2013
Time3:35 - 4:35 pm
DescriptionGrowing ZnSe/Si Bi-coaxial Nanowire Heterostructure
Via a One Step Evaporation Method

One step evaporation method for growing ZnSe/Si Bi-coaxial nanowire
heterostructure is introduced in this paper, which results in bi-coaxial
nanowires with typical diameter of 80-100nm. The products were characterized
by XRD, TEM and SAED. The analysis of those patterns would be described in
the slide. Also, a possible growth mechanism of ZnSe/Si bi-coaxial nanowire
would be explained. Besides, a similar growth mechanism which is known as
Vapor-liquid-Solid mechanism would be introduced in the slide. That
mechanism could also be used to growth nanowires of some other materials like
CdTe, which is a promoting materials in optoelectronic fields.

New Boson Mass and Spin-Parity Measurements at CMS

In July 2012 CMS announced the discovery of a new particle in the mass region
around 126 GeV. This particle is consistent with the Higgs boson but it will take
further work to determine whether or not it is the Higgs boson predicted by the
Standard Model(SM). I will talk on the first study of the spin-parity of the newly
discovered boson. The SM spinCparity Jp = 0+ hypothesis is confronted with
alternative models using the kinematic properties of the Higgs boson decays
into ZZ channel (HZZ*4l). The analysis uses data collected by the CMS
detector at the LHC, corresponding to integrated luminosity of 17.3 fb-1 at s =
7 and 8 TeV.
PublisherBaylor Sciences Building
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