Nedaa Alexandra Asbah (Harvard) “Evidence of the Four-Top-Quark Production at the LHC”

ABSTRACT:

A summary of the latest results on the evidence of the four-top-quark production using proton-proton collision data at a centre of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider with an integrated luminosity of 139 fb−1. Events are selected if they contain a same-sign lepton (electron or a muon) pair or at least three leptons (2lSS/3l) or a single lepton or an opposite-sign lepton pair (1l/2lOS). A multivariate technique is used to discriminate between signal and background events in the signal rich regions.

The combined four top-quark production cross section is measured to be 24 +7/−6 fb, with a corresponding observed (expected) signal significance of 4.7 (2.6) standard deviations over the background-only
predictions. It is consistent within 2.0 standard deviations with the Standard Model expectation of 12.0 ± 2.4 fb.

http://physics.lbl.gov/rpm/index.php/events/

If you are looking to confirm if there is an event, due to room reservation, please go to RPM website for a list of all scheduled talks.
──────────
Troy Cortez is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
https://lbnl.zoom.us/j/91782268585

Meeting ID: 917 8226 8585
One tap mobile
+16699006833,,91782268585# US (San Jose)
+13462487799,,91782268585# US (Houston)

Dial by your location
+1 669 900 6833 US (San Jose)
+1 346 248 7799 US (Houston)
+1 253 215 8782 US (Tacoma)
+1 646 558 8656 US (New York)
+1 301 715 8592 US (Germantown)
+1 312 626 6799 US (Chicago)
Meeting ID: 917 8226 8585
Find your local number: https://lbnl.zoom.us/u/abeLb1T4q1

Join by SIP
91782268585@zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (EMEA)
103.122.166.55 (Australia)
64.211.144.160 (Brazil)
69.174.57.160 (Canada)
207.226.132.110 (Japan)
Meeting ID: 917 8226 8585

──────────

Talk Recording Link:

Nedaa Alexandra Asbah (Harvard) Talk