The mass of the top quark is measured in 36.3$$\,\text {fb}^{-1}$$of LHC proton–proton collision data collected with the CMS detector at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$. The measurement uses a sample of top quark pair candidate events containing one isolated electron or muon and at least four jets in the final state. For each event, the mass is reconstructed from a kinematic fit of the decay products to a top quark pair hypothesis. A profile likelihood method is applied using up to four observables per event to extract the top quark mass. The top quark mass is measured to be $$171.77\pm 0.37\,\text {Ge}\hspace{-.08em}\text {V} $$. This approach significantly improves the precision over previous measurements.
Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$
C. Aimè;S. Calzaferri;D. Fiorina;P. Montagna;C. Riccardi;P. Salvini;I. Vai;P. Vitulo;M. Pelliccioni;
2023-01-01
Abstract
The mass of the top quark is measured in 36.3$$\,\text {fb}^{-1}$$of LHC proton–proton collision data collected with the CMS detector at $$\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V} $$. The measurement uses a sample of top quark pair candidate events containing one isolated electron or muon and at least four jets in the final state. For each event, the mass is reconstructed from a kinematic fit of the decay products to a top quark pair hypothesis. A profile likelihood method is applied using up to four observables per event to extract the top quark mass. The top quark mass is measured to be $$171.77\pm 0.37\,\text {Ge}\hspace{-.08em}\text {V} $$. This approach significantly improves the precision over previous measurements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
