[PDF] Top 20 Direct pair production by electrons

... process are included, Z the exchange effect is included, 3 the effect of screening is treated more accurately using the Thomas · F erm i screening function , 4 the integ ration of the d [r] ... See full document

... top production: First of all, the process is sensitive to the electro-weak Wtb-vertex and non-standard couplings can give a hint on physics be- yond the Standard ...top production allows a direct ... See full document

... shown in Table 3. The fake background (events contain- ing misidentified jets and real leptons from conversions) is obtained using the matrix method, similarly to what is described in [25]. In SR-SSjveto, there is a ... See full document

... (real electrons from t¯t events, either prompt or from leptonic tau decays, con- tribute significantly to the signal region); a multijets tem- plate (gluon-initiated fake taus from multijets); and a com- ... See full document

... 2.2). Pair production, on the other hand, proceeds through QCD interactions and thus depends only on the leptoquark spin and on the fact that it is a colour-triplet ...leptoquark ... See full document

... the production of b-jets in association with missing transverse momentum and possibly additional jets and charged ...the production and decay of stops and ... See full document

... The preceding section has shown that the uniform approx- imation is a very dependable method, yielding results very close to those obtained from the exact integration. The lat- ter, however, is only feasible for a ... See full document

... kink pair nucleation rate, as an Arrhenius-like form in the saddle point energy, can be derived directly from the driven, overdamped sine-Gordon equation for an elastic ... See full document

... two direct trajectories and the first five pairs of rescattered trajectories 共 ordered by increasing travel times 兲 ...the direct electrons, the first five pairs of orbits (1 ⫹ •••⫹ 10), ... See full document

... The x-ray spectrum of the Iowa State College synchrotron operating at 65 Mev. has been measured. The method consisted of the observation, in a magnetic cloud chamber, of the momentum of each member of electron pairs ... See full document

... counterparts. Production of third generation squarks via decay of a gluino can be significant if the mass of the gluino does not exceed the TeV ...to direct pair production rates at the LHC ... See full document

... two electrons or two muons significant E miss T is required and the invariant mass of the lepton pair must be greater than 15 GeV and must not be near the Z boson ... See full document

... As pointed out in the introduction, measurements of the total t¯t cross section can be used to extract the top-quark mass from data. This was done, for example, in [29] using different higher-order approximations for the ... See full document

... positron pair production by electrons accelerated in a wakefield generated by the interaction between an in- tense electron-type neutrino beam and a collisionless cold unmagnetized electron–ion ... See full document

... energy production and consumption, explaining the evolution of a plethora of stabilising mechanisms that come into play, as required, to ensure smooth running of the system over the wide range of irradiances that ... See full document

... stop production (˜ g → t t ˜ 1 ) and an o ff -shell stop, upper limits are derived on the gluino and neutralino (LSP) ...with direct pair-production of stops are considered for a variety of its ... See full document

... Abstract. The most recent results of the searches for direct production of third generation squarks with the ATLAS detector are presented. All the selected analyses use 21 fb −1 of pp collisions at √ s = 8 ... See full document

... to direct pair production rates at the Large Hadron Collider (LHC) that can be observed in the data sample recorded by the ATLAS ...for direct top and bottom squark pair pro- duction ... See full document

... the direct pair production cross-section is sufficient to produce observable signatures at the ATLAS detector and to probe various theoretical scenarios with the Large Hadron Col- lider (LHC) data at √ ... See full document

... The main discriminating variable in the analysis is the average jet mass of a large radius jet, where the radius (R) is dependent upon the stop mass under consideration: The main background is multi-jet ... See full document