High-precision measurement of the W boson mass with the CDF II detector.

Tuesday 10 May 2022, 14:30 → 18:15 Europe/Rome

Aula Conversi (Dip. di Fisica - Edificio G. Marconi)

Christopher Hays (Oxford University)

The mass of the W boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle physics. The Higgs boson was the last missing component of the model. After observation of the Higgs boson, a measurement of the W boson mass provides a stringent test of the model. We measure the W boson mass, using data corresponding to 8.8 fb-1 of integrated luminosity collected in proton-antiproton collisions at a 1.96 TeV center-of-mass energy with the CDF II detector at Fermilab. The measured mass, 80433.5±6.4 stat ± 6.9 sys GeV, is in significant tension with the standard model expectation.

Zoom connection: https://uniroma1.zoom.us/j/87038625161?pwd=cEtGRjZNT2VWSlJIWmxaYmxSMDhRZz09#success

Rome.pdf

14:30 → 14:35 Welcome

Speaker: Aleandro Nisati (Istituto Nazionale di Fisica Nucleare)

14:35 → 15:15 High-precision measurement of the W boson mass with the CDF II detector

Speaker: Christopher Hays (Oxford Univ.)

15:30 → 16:00 Coffee break

16:00 → 16:15 ATLAS

Speakers: Francesco Giuli (CERN), Francesco Giuli (R), Francesco Giuli (Istituto Nazionale di Fisica Nucleare)

FGiuli_mW_Sapienza_100522.pdf

16:15 → 16:30 CMS

Speaker: Marco Cipriani (CERN)

cipriani_2022May10_Whelicity_v2.pdf

16:30 → 16:45 LHCb

Speaker: Lorenzo Sestini (Istituto Nazionale di Fisica Nucleare)

wmass_lhcb_roma.pdf

16:45 → 17:20 Theory context and implications

Speaker: Luca Silvestrini (Istituto Nazionale di Fisica Nucleare)

silvestrini@MW.pdf

17:20 → 18:00 Discussion