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Ultraheavy diquark decaying into vectorlike quarks at the LHC
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abstract
We explore the discovery potential of an ultraheavy $(7-8.5$ TeV) diquark scalar produced in the collisions of two up quarks at the LHC. Assuming that the diquark scalar decays into two vectorlike quarks of mass around 2 TeV, each of them decaying into a $W^{+}$ boson and a $b$ quark, we focus on the fully-hadronic final state. We present a signal-from-background separation study based on a discriminator built with Machine Learning techniques. For this six-jet final state and a luminosity of $3000 \ \text{fb}^{-1}$, we estimate that a diquark scalar of mass near 8 TeV may be discovered or ruled out even when its coupling to up quarks is as low as 0.2.
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Cited by 1 Pith paper
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Search for resonant production of pairs of dijet resonances through broad mediators in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A CMS reinterpretation of the 138 inverse femtobarn dijet-pair search finds the 8.6 TeV excess persists when the mediator width is increased to 10%, with local significance 3.6 standard deviations.
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