Search for three-jet resonances in pp collisions at √s = 7 TeV

Apyan, Aram ; Bauer, Gerry P. ; Bendavid, Joshua L. ; Busza, Wit ; Butz, Erik M. ; Cali, Ivan Amos ; Chan, M. ; Dutta, V. ; Gomez-Ceballos, Guillelmo ; Goncharov, Maxim ; Hahn, Kristian Allan ; Kim, Y. ; Klute, Markus ; Krajczar, Krisztian F. ; Li, W. ; Luckey, P. David, Jr. ; Ma, Teng ; Nahn, Steven ; Paus, Christoph M. E. ; Ralph, Duncan Kelley ; Roland, Christof E. ; Roland, Gunther M. ; Rudolph, Matthew Scott ; Stephans, George S. F. ; Stockli, Fabian ; Sumorok, Konstanty C. ; Sung, Kevin Kai Hong ; Velicanu, Dragos Alexandru ; Wenger, Edward Allen ; Wolf, R. ; Wyslouch, Boleslaw ; Xie, S. ; Yang, M. ; Yilmaz, Yetkin ; Yoon, A. S. ; Zanetti, Marco

Elsevier

Others  :  http://dspace.mit.edu/openaccess-disseminate/1721.1/91937

美国|英语

来源: MIT Theses in DSpace@MIT

【 摘 要 】

Results are reported from a search for the production of three-jet resonances in pp collisions at a center-of-mass energy √s = 7 TeV. The study uses the data sample collected by the CMS experiment at the LHC in 2011, corresponding to an integrated luminosity of 5.0 fb[superscript −1]. Events with high jet multiplicity and a large scalar sum of jet transverse momenta are analyzed for the presence of resonances in the three-jet invariant mass spectrum. No evidence for a narrow resonance is found in the data, and limits are set on the cross section for gluino pair production in an R-parity-violating supersymmetry model, for gluino masses greater than 280 GeV. Assuming a branching fraction for gluino decay into three jets of 100%, gluino masses below 460 GeV are excluded at 95% confidence level. These results significantly extend the range of previous limits.