Several of these were revealed at this year's ICHEP conference-but none were successful so far.= H$$ production rate to date. 'The very large LHC dataset could allow us to have a closer look at many other signatures-any of which might turn out to contain something new. Dissertation Supervisor Chair Rafael Coelho Lopes de Sa. Lederle Graduate Research Tower 1033 (See. 'We are now exploring alternate 'beyond the standard model' theories that predict other signatures,' Murray said. Defense: Samyukta Krishmanurty: Measurement of the Off-Shell Higgs Boson Cross Section in the Four Lepton Final State using the ATLAS Detector.

Elementary fields are only one kind of spin-1/2 and spin-0 preon. In the future, it could thus inform new searches aimed at directly observing these new particles and confirming their existence. Abstract: A fermion-boson-type composite model for quarks and leptons is proposed. While this study by the ATLAS Collaboration did not lead to the observation of novel heavy Higgs bosons, it narrowed down the parameters within which these particles could be detected and observed. The ATLAS collaboration specifically searched for pairs of decaying taus, focusing on cases in which both taus produced pions or where one produced either an electron or muon and the other produced pions. When they decay, they produce an invisible neutrino and either an electron, muon, or most commonly pions (i.e., hadrons made of quarks). Taus are particularly difficult to measure, as they decay very quickly. It specifically identifies electrons and two types of particles that share some similarities with electrons, namely muons and taus. The ATLAS detector was designed to measure the particles emerging from collisions in the Large Hadron Collider (LHC), which is the largest and most powerful particle accelerator in the world today. 'This particular paper is not the first of its kind, but it uses four times as much data as previous studies (i.e., all the data we have), as well as improved methods.' 'We have carried out several searches for more Higgs bosons, but this search is sensitive to more of the 'parameter space' of the SUSY Higgses than any other,' William John Murray, one of the researchers who carried out the study, told.

Overflows are included in the last bin of the distributions. Expectations from signal processes are superimposed. The predictions and uncertainties for the background processes are obtained from the fit assuming the background-only hypothesis. The binning displayed is that entering into the fit. The mTtot for the b-veto (left) and b-tag (right) categories of the τlepτhad channel (top) and τhadτhad channel (bottom). In a recent paper published in Physical Review Letters, the researchers presented the results of a search for heavy neutral Higgs bosons based on the analysis of data collected by the ATLAS detector. The ATLAS Collaboration is a large team of researchers from multiple institutes worldwide who are working together to analyze and better understand the measurements recorded by the ATLAS detector at CERN. In recent years, physicists worldwide have been trying to observe them directly in order to prove the validity of SUSY theory and understand the properties of these new particles. While SUSY is theoretically appealing, there is no evidence that it applies to the real world, and if it does, the particles it predicts were presumably too heavy to be observed in previous experiments. For instance, it suggests that there are at least five types of Higgs bosons, rather than just the one type that has been observed so far. It also predicts the existence of several new particles, none of which have been observed so far. SUSY theory explains a number of mathematical coincidences in the SM and is a fundamental component of string theory, one of the most promising constructs merging the SM with theories of gravity.

Boson lepton