Kun Liu weekly discussion with students [ATLAS]

Wednesday 28 Sept 2022, 16:00 → 17:05 Asia/Shanghai

Online

16:00 → 16:05 Introduction

General items.

Speaker: Prof. Kun LIU (Tsung-Dao Lee Institute & Shanghai Jiao Tong University)

16:05 → 16:15 ttWML and ttHML analyses status

Speaker: Nihal BRAHIMI (Tsung-Dao Lee Institute & Shanghai Jiao Tong University)

ttWML analysis status:

• Currently targeting the Higgs 2022 conference for a public result (7-11 of November)
• We had the top approval meeting last Thursday (https://indico.cern.ch/event/1202155/#10-top-wg-approval-differentia) and the analysis was overall well received.
• We have a list of action items following the meeting that need to be addressed. Targeting the end of this week/begining of next week to finalize them.
• We aim to have an unblinding approval during next week once the INT note is updated with results from action items. No dedicated meeting required.

ttHML analysis status:

• Most of the efforts focussed on defining MVA discriminants to be used in the 0-tau channels.
• Working closely with Jialin to come up with a good discriminant using DNN. Multiple configurations tested so far. Main bottleneck is the ttW CR and ttH SR definitions. Large anti-correlation (70%) observed between NF(ttH) and NF(ttW) which is not desirable (updates from Jialin today, rehearsal for analysis meeting later today).
• Currently preparing config to combine candidate SRs and fakes CRs from ttWML analysis as a proof of principle.
• We will have a ttHML status report during the October ATLAS week (October 11th). 

16:15 → 16:30 ttH analysis

Speaker: jialin li

0928.pdf

16:30 → 16:45 photon ID efficiency measurement & Zgamma analysis

Speaker: Kang Liu

16:45 → 17:00 silicon tracker: HGTD

17:00 → 17:05 Non-academic items

Anything else?