arXiv subjects

Teresa Barillari

Publications and source records attributed to Teresa Barillari.

6 recordsLinked to original sources

arXiv2019

Measurements of the top-quark mass in fixed schemes and with alternative methods using the ATLAS and CMS detectors at the LHC

Selected topics of the top-quark mass measurements in well-defined schemes are presented. The measurements have been performed using data recorded with the ATLAS and CMS detectors at the LHC at proton-proton centre-of-mass energies of 7 and 8 TeV. Precision theoretical QCD calculations for both inclusive top-antitop quark pair production and top-antitop quark pair production with an additional jet to extract the top quark mass in the pole-mass scheme have been used.

hep-ex↗

arXiv2019

Measurements of the top-quark mass with the ATLAS detector

The top-quark mass is one of the fundamental parameters of the Standard Model of particle physics. The latest ATLAS measurements of the top-quark mass in top quark pair final states are presented. Measurements use di-lepton, lepton+jets and all-jets final states and their combination is performed. Measurements of the top-quark pole mass based on precision theoretical QCD calculations for lepton kinematic distribution and for top quark pair production with an additional jet are also presented.

hep-ex↗

arXiv2017

Top-quark mass and top-quark pole mass measurements with the ATLAS detector

Results of top-quark mass measurements in the di-lepton and the all-jets top-antitop decay channels with the ATLAS detector are presented. The measurements are obtained using proton-proton collisions at a centre-of-mass energy $\sqrt{s}$ = 8 TeV at the CERN Large Hadron Collider. The data set used corresponds to an integrated luminosity of 20.2 $fb^{-1}$. The top-quark mass in the di-lepton channel is measured to be 172.99 $\pm$ 0.41 (stat.) $\pm$ 0.74 (syst.) GeV. In the all-jets analysis, the top-quark mass is measured to be 173.72 $\pm$ 0.55 (stat.) $\pm$ 1.01 (syst.) GeV. In addition, the top-quark pole mass is determined from inclusive cross-section measurements in the top-antitop di-lepton decay channel with the ATLAS detector. The measurements are obtained using data at $\sqrt{s}$ = 7 TeV and $\sqrt{s}$ = 8 TeV corresponding to an integrated luminosity of 4.6 $fb^{-1}$ and 20.2 $fb^{-1}$ respectively. The top-quark pole mass is measured to be $172.9^{+2.5}_{-2.6}$ GeV.

hep-ex↗

arXiv2006

Exclusive baryon-antibaryon production in $γγ$ collisions at e+e- colliders

The exclusive production of baryon-antibaryon pairs in the collisions of two quasi-real photons has been studied using different detectors at e+e- colliders. Results are presented for $γγ\to$ proton antiproton, $γγ\toΛ\barΛ$, and $γγ\to Σ^{0}\bar{Σ^{0}}$ final states. The cross-section measurements are compared with all the existing experimental data and with the analytic calculations based on the three-quark model, on the quark-diquark model, and on the handbag model.

hep-ex↗

arXiv2003

Measurement of the Cross-Section for the Process Gamma-Gamma to Proton-Antiproton at sqrt(s_ee) = 183 - 189 GeV with the OPAL Detector at LEP

The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons has been studied using data taken at sqrt(s_ee) = 183 GeV and 189 GeV with the OPAL detector at LEP. Results are presented for proton-antiproton invariant masses, W, in the range 2.15 < W < 3.95 GeV. The cross-section measurements are compared with previous data and with recent analytic calculations based on the quark-diquark model.

hep-ex↗

arXiv2001

Experimental Status of Photon Photon into Baryon Antibaryon Pairs

The exclusive production of baryon antibaryon pairs in the collisions of two quasi-real photons have been studied in different experiments at e+e- colliders. Results are presented for the processes gamma gamma to proton antiproton and gamma gamma to lambda antilambda. The cross-section measurements are compared with the recent analytic calculations based on the quark-diquark model predictions. Monte Carlo studies have been done to investigate the PEP-N expectations for the gamma gamma to proton antiproton process.

hep-ex↗