Ultraheavy diquark decaying into vectorlike quarks at the LHC
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911110686310400 |
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| author | Duminica, Ioana Alexa, Calin Dinu, Ioan M. Dobrescu, Bogdan A. Filip, Matei-Stefan |
| author_facet | Duminica, Ioana Alexa, Calin Dinu, Ioan M. Dobrescu, Bogdan A. Filip, Matei-Stefan |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_17031 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultraheavy diquark decaying into vectorlike quarks at the LHC Duminica, Ioana Alexa, Calin Dinu, Ioan M. Dobrescu, Bogdan A. Filip, Matei-Stefan High Energy Physics - Phenomenology High Energy Physics - Experiment 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. |
| title | Ultraheavy diquark decaying into vectorlike quarks at the LHC |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2503.17031 |