Ma, Yousi (2012) Search for signatures of extra dimensions in the diphoton mass spectrum with the CMS detector. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:05182012-101542629
A search for signatures of extra dimensions in the diphoton invariant-mass spectrum has been performed with the Compact Muon Solenoid detector at the Large Hadron Collider. No excess of events above the standard model expectation is observed using a data sample collected in proton-proton collisions at sqrt(s) = 7 TeV corresponding to an intergrated luminosity of 2.2 fb−1. In the context of the Randall–Sundrum model, lower limits are set on the mass of the first graviton excitation in the range of 0.86–1.84 TeV, for values of the associated coupling parameter k ̃ between 0.01 and 0.10. Additionally, in the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3–3.8 TeV at the 95% confidence level. These are the most restrictive bounds to date.
|Item Type:||Thesis (Dissertation (Ph.D.))|
|Subject Keywords:||Extra dimensions; LHC; CMS;|
|Degree Grantor:||California Institute of Technology|
|Division:||Physics, Mathematics and Astronomy|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||7 May 2012|
|Default Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Yousi Ma|
|Deposited On:||22 May 2012 16:33|
|Last Modified:||26 Dec 2012 04:43|
- Final Version
See Usage Policy.
Repository Staff Only: item control page