[PDF] Top 20 ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at root s=7 TeV

... 4.0 TeV have been probed. No resonance-like features have been observed in the dijet mass spectrum, and all angular distributions are consistent with the predictions of ... See full document

... R. Nayyar, 7 H. A. Neal, 89 P. Yu. Nechaeva, 96 T. J. Neep, 84 P. D. Nef, 144 A. Negri, 121a,121b G. Negri, 30 M. Negrini, 20a S. Nektarijevic, 49 C. Nellist, 117 A. Nelson, 164 T. K. Nelson, 144 S. ... See full document

... D. Oliveira Damazio 25 , E. Oliver Garcia 167 , D. Olivito 120 , A. Olszewski 39 , J. Olszowska 39 , A. Onofre 124a , ab , P.U.E. Onyisi 31 , C.J. Oram 159a , M.J. Oreglia 31 , Y. Oren 153 , D. Orestano 134a , 134b , N. ... See full document

... a new resonance are determined at 95% ...used in all cases, with a uniform positive prior probability distribution for the parameter of ...flat in the coupling strength to the fourth ... See full document

... 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, DNSRC and ... See full document

... reconstructed using the anti-k t algorithm [41,42] with a radius parameter value of ...simulation and validated using test-beam and collision data ...GeV and | η | < 4 . 5. ... See full document

... derived in situ, using dijet balance techniques and the bi- sector method; it is then cross-checked through comparison with simulation ...Jet angular resolutions are estimated ... See full document

... a mass-dependent electroweak K-factor was applied to account for higher order electroweak effects due to vir- tual gauge boson loops ...the new physics included in the CI term has unknown ... See full document

... containing at least one photon and at least one jet are selected for ...with at least five charged-particle tracks with p T > 400 MeV ...occur for the same bunch ...GeV ... See full document

... leptons and quarks in the Standard Model (SM) suggest that they might be a part of some symmetry at en- ergy scales above the electroweak symmetry breaking ...scale. In this type of symmetry, ... See full document

... considered in this analysis are the production of W +jets, Z/γ ∗ +jets, t¯ t, single top quarks, boson pairs, and ...- and Z-boson processes are simulated using the ALPGEN ...element ... See full document

... [8] and to explain why gravity is so much weaker than the other forces. In the LED scenario of Arkani-Hamed, Dimopoulos, and Dvali (ADD) [1], gravity propa- gates in the (4 + n)-dimensional ... See full document

... T and dilepton invariant mass ranges relevant to this study, the level of the background is best estimated using a data-driven method, rather than by MC simulation where the number of events is low ... See full document

... by ATLAS muon performance studies [31] and a β- dependent trigger ...(trigger for |η| < 1.05). This correction is varied by ± 50% to account for the large dependence of the efficiency on ... See full document

... summary, dijet angular distributions have been mea- sured by the ATLAS experiment in 17 ...8 TeV pp collisions at the LHC. Over a wide angular range ... See full document

... significance in terms of an equivalent number of standard deviations (the z-value) ...(deficit) in data in a given bin, the significance is plotted as positive ...data and the fitted ... See full document

... aid in the de- scription of the background and to model the SUSY sig- ...pair and single top production are sim- ulated with MC@NLO [26], fixing the top quark mass at ...GeV, and ... See full document

... presented in this Letter is based on 37 pb − 1 of pp collision data collected in ...used for resolution ...behavior and to set ...super-multiplets in the messenger sector, N 5 = ... See full document

... of new physics phenomena can produce modifications to the dilepton mass spectra predicted by the standard model (SM) such as quark/lepton compos- iteness, extra dimensions, and new ... See full document

... background in the e + e − sample, a com- bination of three different techniques is ...used. In the “reversed electron identification” technique, a sample of events where both electrons pass the Loose ... See full document