EPE Seminar: Michael Donald Hank

Tuesday 13 Feb 2024, 16:30 → 18:00 US/Pacific

PAT C-421

Henry J Lubatti (lubatti@uw.edu)

Search for pair production of higgsinos in events with two Higgs bosons and missing transverse momentum in sqrt(s)=13 TeV pp collisions at the ATLAS experiment.

Michael Donald Hank

University of Pennsylvania

Abstract

This talk will present a search for pair production of higgsinos in scenarios with gauge-mediated supersymmetry breaking. Each higgsino is assumed to decay into a Higgs boson and a nearly-massless gravitino. The search targets the bb decay channel of the Higgs bosons, leading to a reconstructed final state with at least three energetic b-jets and missing transverse momentum. Two complementary analysis channels are used to target higgsino masses below and above 250 GeV. The low (high) mass channel uses 126 (139) inverse femtobarns of sqrt(s)=13 TeV data collected by the ATLAS detector during Run 2 of the Large Hadron Collider, extending previous ATLAS results with 24.3 (36.1) inverse femtobarns. No significant excess above the Standard Model prediction is observed. At 95% confidence level, higgsino masses below 950 GeV are excluded. Exclusion limits as a function of the higgsino decay branching ratio to a Z or a Higgs boson are also presented.

Recrding https://washington.zoom.us/rec/share/8pnX-4w4s8SOckhG32AOR_0SrpnuhiVVZGIYzn8GHieQsp1tJlTIl9xVf5pD7Zo9._1_1Mm2qmjFx1Ssq?startTime=1707870709000

16:30 → 18:00 Search for pair production of higgsinos in events with two Higgs bosons and missing transverse momentum in sqrt(s)=13 TeV pp collisions at the ATLAS experiment

Henry J Lubatti is inviting you to a scheduled Zoom meeting.

Topic: EPE seminar
Time: Feb 13, 2024 04:30 PM Pacific Time (US and Canada)

Join Zoom Meeting
https://washington.zoom.us/j/91759073939

Meeting ID: 917 5907 3939

Speaker: Michael Donald Hank (University of Pennsylvania (US))

UW_seminar_Hank.pdf