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DTSTART;TZID=Europe/Ljubljana:20241016T110000
DTEND;TZID=Europe/Ljubljana:20241016T120000
DTSTAMP:20260423T172543
CREATED:20240924T072832Z
LAST-MODIFIED:20241016T091237Z
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SUMMARY:Benjamin Fuks: Signatures of toponium formation in LHC run 2 data
DESCRIPTION:We study reported deviations between observations and theoretical predictions associated with the production of a pair of di-leptonically decaying top quarks at the LHC\, and we examine the possibility that they reflect a signal of toponium formation. We investigate the production by gluon fusion of a colour-singlet spin-0 toponium bound state of a top and anti-top quark\, that then decays di-leptonically. We find strong correlations favouring the production of di-lepton systems featuring a small angular separation in azimuth and a small invariant mass. Although toponium production only contributes to 0.8% of the total top-quark pair-production cross section at the 13 TeV LHC\, there is a possibility that it can account for observed excesses in the narrow edges of phase space. We propose a method to discover toponium formation by `reconstructing’ both its top and anti-top quark constituents in the di-lepton channel.\nhttps://indico.ijs.si/event/2276/
URL:https://web-f1.ijs.si/event/benjamin-fuks-seeking-a-coherent-explanation-of-lhc-excesses-for-compressed-spectra/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (Jamova)
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