Combine Project 1 Lei Xia 2 Christoph Rosner

Combine Project 1 Lei Xia, 2 Christoph Rosner, 1 Xiaorong Zhou, 2 Yadi Wang, 2 Cristina Morales, 1 Guangshun Huang, 1 Zhengguo Zhao, 2, 3 Dexu Lin, 2 Alaa Dbeyssi, 2, 3 Paul Larin, Samer Ali Nasher Ahmed, 2, 3, 4 Frank Maas 1 University of Science and Technology of China 2 Helmholtz-Institute Mainz (GSI) 3 Institute fur Kernphvsik, Johannes Gutenberg Universiat Mainz 4 PRISMA Cluster of Excellence, Johannes Gutenberg Universiat BESIII Weekly Group Meeting 1 th February 27 2017 University of Science and Technology of China, Hefei

Outline • Selection Criteria Ø HIM Proposal Ø Our Proposal Ø Result • Monte Carlo Ø HIM Proposal Ø Our Proposal Ø Result • Memo • Other Dispute Remain Ø Track efficiency Ø PID efficiency • Summary Feburary 20 th 2017 Combine Project 2

Selection Criteria Feburary 20 th 2017 Combine Project 3

Selection Criteria • Feburary 20 th 2017 Combine Project 4

Problem 1: Iteration Janurary 16 th 2017 Measurement of e+e-→ppbar Cross Section 5

Problem 1: Iteration Janurary 16 th 2017 Measurement of e+e-→ppbar Cross Section 6

Selection Criteria Ø Signal Background ratio Feburary 20 th 2017 Combine Project 7

Selection Criteria Ø Systemic uncertainty Feburary 20 th 2017 Combine Project 8

Monte Carlo Feburary 20 th 2017 Combine Project 9

Monte Carlo • Feburary 20 th 2017 Combine Project 10

Other Dispute Remain Feburary 20 th 2017 Combine Project 11

Other Dispute Remain • Feburary 20 th 2017 Combine Project 12

Other Dispute Remain • Feburary 20 th 2017 Combine Project 13

Memo Feburary 20 th 2017 Combine Project 14

Memo Ø We write the memo use HIM group’s style. Feburary 20 th 2017 Combine Project 15

Summary and outlook Feburary 20 th 2017 Combine Project 16

Summary • We have reach a consensus in selection criteria and Monte Carlo. • There is some disputes remaining. • We can go to next step. Feburary 20 th 2017 Combine Project 17

Thanks for Your Attention! Feburary 20 th 2017 Combine Project 18