Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at root s=8 TeV with the ATLAS detector

Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb(-1) of root s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT GT 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between E-T(miss) GT 150 GeV and E-T(miss) GT 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presented.

Source:
European Physical Journal C. Particles and Fields, 2015, 75, 7

Projects:

ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWFW and FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq and FAPESP, Brazil, NSERC, NRC and CFI, Canada, CERN, CONICYT, Chile, CAS, MOST and NSFC, China, COLCIENCIAS, Colombia, MSMT CR, MPO CR and VSC CR, Czech Republic, DNRF, DNSRCand Lundbeck Foundation, Denmark, EPLANET, ERC and NSRF, European Union, IN2P3-CNRS, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, DFG, HGF, MPG and AvH Foundation, Germany, GSRT and NSRF, Greece, RGC, Hong Kong SAR, China, ISF, MINERVA, GIF, I-CORE and Benoziyo Center, Israel, INFN, Italy, MEXT and JSPS, Japan, CNRST, Morocco, FOM and NWO, Netherlands, BRF and RCN, Norway, MNiSW and NCN, Poland, GRICES and FCT, Portugal, MNE/IFA, Romania, MES of Russia and NRC KI, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS and MIZS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC and Wallenberg Foundation, Sweden, SER, SNSF and Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, the Royal Society, DOE and NSF, United States of America, Leverhulme Trust, United Kingdom, ICREA