Search for New Particles in Two-Jet Final States in 7 TeV Proton-Proton Collisions with the ATLAS Detector at the LHC

Aad, G.; Borjanovic, I.; Božović-Jelisavčić, Ivanka; Krstić, Jelena; Mamužić, Judita; Mudrinić, Mihajlo; Popovic, D. S.; Reljic, D.; Sijacki, Dj.; Simic, Lj.; Vranjes, N.; Vranješ Milosavljević, Marija; Vudragovic, D.; Zivkovic, L.

doi:10.1103/PhysRevLett.105.161801

2010

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ATLAS Collaboration (ukupan broj autora: 3173)

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Abstract

A search for new heavy particles manifested as resonances in two-jet final states is presented. The data were produced in 7 TeV proton-proton collisions by the LHC and correspond to an integrated luminosity of 315 nb(-1) collected by the ATLAS detector. No resonances were observed. Upper limits were set on the product of cross section and signal acceptance for excited-quark (q*) production as a function of q* mass. These exclude at the 95% C. L. the q* mass interval 0: 30 LT m(q)* LT 1:26 TeV, extending the reach of previous experiments.

Source:
Physical Review Letters, 2010, 105, 16

Projects:

ANPCyT, Argentina, Yerevan Physics Institute, Armenia, ARC and DEST, Australia, Bundesministerium fur Wissenschaft und Forschung, Austria, National Academy of Sciences of Azerbaijan, State Committee on Science and Technologies of the Republic of Belarus, CNPq and FINEP, Brazil, NSERC, NRC, and CFI, Canada, CERN, CONICYT, Chile, NSFC, China, COLCIENCIAS, Colombia, Ministry of Education, Youth and Sports of the Czech Republic, Ministry of Industry and Trade of the Czech Republic, Danish Natural Science Research Council and the Lundbeck Foundation, European Commission