Search results for "scalars"

showing 2 items of 2 documents

Search for massive colored scalars in four-jet final states in √s = 7 TeV proton–proton collisions with the ATLAS detector

2011

A search for pair-produced scalar particles decaying to a four-jet final state is presented. The analysis is performed using an integrated luminosity of 34 pb[superscript −1] recorded by the ATLAS detector in 2010. No deviation from the Standard Model is observed. For a scalar mass of 100 GeV (190 GeV) the limit on the scalar gluon pair production cross section at 95% confidence level is 1 nb (0.28 nb). When these results are interpreted as mass limits, scalar-gluons (hyperpions) with masses of 100 to 185 GeV (100 to 155 GeV) are excluded at 95% confidence level with the exception of a mass window of width about 5 GeV (15 GeV) around 140 GeV.

Particle physicsPhysics and Astronomy (miscellaneous)Ciências Naturais::Ciências FísicasAtlas detectorAstrophysics::High Energy Astrophysical Phenomena:Ciências Físicas [Ciências Naturais]Scalar (mathematics)FOS: Physical sciencesddc:500.27. Clean energy01 natural sciences530Partícules (Física nuclear)High Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Fysikddc:530High Energy PhysicsPP Collisions010306 general physicsNuclear ExperimentEngineering (miscellaneous)Ciencias ExactasPhysicsATLAS detector010308 nuclear & particles physicsSettore FIS/01 - Fisica SperimentaleFísicascalarsSupersymmetryATLASmassive colored scalars; proton–proton collisions; ATLAS detectorGluonPair productionPhysical SciencesFísica nuclearproton-proton collisionsHigh Energy Physics::ExperimentLHCSupersymmetryParticle Physics - Experiment
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Hunting for new physics signals in the LHC era

2021

Actualment, el ME de física de partícules és capaç d’explicar satisfactòriament tres de les quatre interaccions fonamentals de la matèria: fortes, febles i electromagnètiques. Tot i això, hi han molts aspectes que aquesta fantàstica teoria no és capaç d’explicar i, sens dubte, ha d’haver alguna cosa més enllà d’aquesta teoria. En aquesta tesi es pretén descobrir si hi ha algun indici a les dades actuals dels acceleradors que suggerisca l’existència de nova física (NF). Pretenem, per tant, determinar fins a quin punt alguns dels models de NF que han sigut proposats a la literatura poden ser plausibles tenint en compte les dades actuals. D’aquesta forma, serem capaços de trobar restriccions s…

colour-octet scalars:FÍSICA::Física de altas energías::Física teórica altas energías [UNESCO]phenomenologystandard model effective field theorytop-quarkUNESCO::FÍSICA::Física de altas energías::Física teórica altas energías
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