# USTC weekly meeting

Europe/Zurich
CERN

#### CERN

Description

This meeting will take place by Zoom.

### Join Zoom Meeting  -  ZOOM Link

Meeting ID: 919 7170 8662             Password: 757607

### The timetable of 2021 talk arrangement can be found here  :  Web Link

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• 9:00 AM 9:30 AM
Updates on searching for a new leptophilic vector boson Z' with four-muon final state 30m
Speaker: Zhe Yang (University of Michigan (US))
• 9:05 AM 10:43 AM
Roundtable
• 9:31 AM
Chihao Li 2m
Speaker: Chihao Li (University of Science and Technology of China (CN))
• 9:33 AM
Fudong He (absent) 2m
Speaker: Fudong He (University of Science and Technology of China (CN))
• 9:35 AM
Hao Xu 2m
Speaker: Hao Xu (University of Science and Technology of China (CN))
• 9:37 AM
Heng Li 4m
Speaker: Heng Li (University of Science and Technology of China (Hefei, China))
• VHWW 3rd EB meeting last Thursday:
• Presented the strategy on WZ CRs in 2l same sign and 3l channels
• Working together with another colleague to include the fake factor and electron charge flip scale factor systematics in the 2l same sign channel
• Improve the slides for the talk in NUCLEUS – 2021 and prepare for the rehearsal tonight
• (Sorry to leave earlier since I am watching Hanlin's thesis defense now)
• 9:41 AM
Mario Jose Sousa 2m
Speaker: Mario Jose Sousa (University of Science and Technology of China (CN))

HN: derivations for new signals requested and nearly finished.

VBS:
* present fit status last Monday in the meeting:
-- https://indico.cern.ch/event/1075499/
-- MCstat / systematic expected significance is now consistent.
-- Some differences found between running 3 POI combined fit and single lepton channel fits
* running updated fits (full Run-2 dataset for 0 lepton).
* some missing variables identified in 1-lepton inputs.

HGTD demonstrator: no news.

HGTD testbeam:
* Discussion with conveners last Wednesday after meeting.
* Preparing code to run over trees.

HGTD general: Next (long) week is HGTD week but Electronics/Mechanics parallel sessions overlap with USTC meeting: not in either group so I will be present here.

• 9:43 AM
Mingyi Liu 1m
Speaker: Mingyi Liu (University of Science and Technology of China (CN))
• 9:45 AM
Quanyin Li 1m
Speaker: Quanyin Li (University of Science and Technology of China (CN))
• 9:46 AM
Shixiang Su 2m
Speaker: Shixiang Su (University of Science and Technology of China (CN))
• 9:48 AM
Tao Wang 2m
Speaker: Tao Wang (University of Science and Technology of China (CN))

Charm:

• DeltaR cut issue has been fixed, a MR will be opened to address this issue
• Cutflows for VHcc 32-15 (current paper) and 33-05 (new sample) samples are consistent with each other
• 9:50 AM
Xiangxuan Zheng 1m
Speaker: Xiangxuan Zheng (University of Science and Technology of China (CN))

LLP study:

2. Read the note and code of LLP search in MS to prepare to add MS vertex information to DVAnalysisBase framework.

• 9:51 AM
Xiangyu Xie (absent) 2m
Speaker: Xiangyu Xie (University of Science and Technology of China (CN))
• 9:53 AM
Xiao Yang 2m
Speaker: Xiao Yang (University of Science and Technology of China (CN))
• 9:55 AM
Xiaotian Liu 1m
Speaker: Xiaotian Liu (University of Science and Technology of China (CN))

ZZ polarization:

• checking the discrenpancy between our private minitrees and offical minitrees, some problems in our framework shooted and fixed. Further checking on the lepton selection criteria
• proposed a set of polarization-sensitive variables to the next iteration of offical minitree production

Dark photon:

• fake study: converged work of framework check as bullet 1 above
• 9:56 AM
Xiaowen Su (absent) 1m
Speaker: Xiaowen Su (Université Paris-Saclay (FR))
• 9:59 AM
Yicong Huang 1m
Speaker: Yicong Huang (University of Science and Technology of China (CN))

VHbb

• Check fitting with MVA score, nominal only and with systematics.
• 10:00 AM
Yifan Yang 1m
Speaker: Yifan Yang (University of Science and Technology of China (CN))

Update legacy vh(bb/cc) C tagging calibration with some modified ntuples.

Solve some problem on using the training dataset dumper framework.

Improve the laser focusing script for Scanning TCT test on HGTD sensor.

• 10:05 AM
Ye Chen 1m
Speaker: Ye Chen (University of Science and Technology of China (CN))
• 10:05 AM
Yi Yu 1m
Speaker: Yi Yu (University of Science and Technology of China (CN))

FCP:

add SF for fw & fast checks                                     Done

QT:

refs & workflow & output var                                  Done

study another package about alg tools & EDM      Doing

DarkPhoton:

validation for high ps uncet points                           Done

signal modeling for hD*                                            Done

reweighting for NO                                                   Redoing

• 10:30 AM
Dongshuo Du 1m
Speaker: Dongshuo Du (University of Science and Technology of China (CN))

1. check the flatness of the readout panel.

In general, the flatness satisfy our need.

2. Based on the LHE files provided by Mingyi, I will do the comparing with the distribution provided by theorist. I hope I can get preliminary results tonight.

• 10:40 AM
Antonio Giannini 1m
Speaker: Antonio Giannini (Universita e sezione INFN di Napoli (IT))
• VBS analysis, 13th Sep 21, https://indico.cern.ch/event/1075499/
• investigation on input variables issue in 0-lep, it will probably require to re-run the RNN models
• working on documentation
• VVJJ analysis, 14th Sep 21, https://indico.cern.ch/event/1075013/
• tagger VS event level variables correlation, more investigation on the di-tagging [attached plot]
• working on fit framework, mainly for SF derivation so far
• setting up (challenging) full stats CNN training

• 10:41 AM
Kuo Ma 2m
Speaker: Kuo Ma (University of Science and Technology of China (CN))

Did some structure simulation and learned the change of the leakage current and the breakdown voltage.