Compact Muon Solenoid
LHC, CERN
Visit us: CMS Public Website, CMS Physics ;
Contact us: CMS Publications Committee
| CMS-EXO-11-038 ; CERN-PH-EP-2011-173 | ||
| Search for signatures of extra dimensions in the diphoton mass spectrum at the Large Hadron Collider | ||
| CMS Collaboration | ||
| 6 December 2011 | ||
| Phys. Rev. Lett. 108 (2012) 111801 | ||
| Abstract: A search for signatures of extra dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. 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 integrated luminosity of 2.2 inverse femtobarns. 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 limits are the most restrictive bounds on virtual-graviton exchange to date. The most restrictive lower limits to date are also set on the mass of the first graviton excitation in the Randall-Sundrum model in the range of 0.86-1.84 TeV, for values of the associated coupling parameter between 0.01 and 0.10. | ||
| Links: e-print arXiv:1112.0688 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
| Figures | |
png pdf |
Figure 1:
|
png pdf |
Figure 2-a:
|
png pdf |
Figure 2-b:
|
png pdf |
Figure 3:
|
|
|
Compact Muon Solenoid LHC, CERN |
|
|
|
|
|
|