GD/I WG: integrated Tracker-TOF detector core

Monday 6 Jun 2022, 09:00 → 11:00 US/Eastern

Zoom connection: https://bnl.zoomgov.com/j/1612787551?pwd=VzBZYVpsMGM3TnpMRHl2K1puOFd5Zz09

Meeting ID: 161 278 7551
Passcode: 707179
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Recording via ZOOM

1 Tracking update: Tracking WG

Speakers: Francesco Bossu (CEA-Saclay), Kondo Gnanvo (Jefferson Lab), Laura Gonella (University of Birmingham), Dr Xuan Li (Los Alamos National Laboratory), Xuan Li (Los Alamos National Lab)

20220606_GD_I_Meeting.pdf

20220606_GD_I_Meeting.pptx

2 Discussion

3 Quantifying physics case of TOF: SIDIS and HF/Jet WGs, in consultation with ToF WG

Speakers: Anselm Vossen (Duke University), Brian Page (Brookhaven National Laboratory), Charlotte Van Hulse, Cheuk-Ping Wong (LANL), Marco Radici (INFN - Sezione di Pavia), Miguel Arratia (University of California, Riverside), Ralf Seidl (RIKEN), Prof. wangmei zha (USTC)

SIDIS Kaon coverage [ATHENA]

SIDIS reco hadron coverage (ECCE)

Study on VM detection [ATHENA]

Charge: discuss the following points on the use of the ToF detector in physics studies: 

• The SIDIS/HF kinematics coverage for the TOFs' momentum region, as quantified by ECCE proposal Fig 2.16. For example, K/pi at 0.2<p<1 GeV in barrel, p<2 GeV in forward, which is also complemented by the RICH detector's threshold detection capability as in Table 2.4.
• Studies to quantify the impact of the ToF PID coverages (backward, central, and forward, separately), such as improving signal/background, acceptance/efficiency, kinematics coverage, and physics reach. 

The following physics driven PID capabilities have been discussed during the meeting: 

• SIDIS di-hadron IFF, for capturing the phase space of di-pion final states:
  • In particular, when looking at cosine partial wave decomposition, which leads to asymmetric pion momentum distribution reaching into the low momentum region; Belle 2 study leads to a significant effect when adjusting low mentum coverage. 
  • YR studied low momentum cut-off for EIC at 100/200/300MeV/c cut-off, where 300MeV showed a significan effect [reference?]. 
  • Hadron coverage plot for SIDIS [ at ECCE https://indico.bnl.gov/event/16045/contributions/63851/attachments/41323/69238/allxqzptacc3_pid1__dat1_smear4.png ] 
• SIDIS: detection of Lambda -> proton +pi (slow)
  • Detailed studies for Lambda's to check the impact of the displaced vertex at Athena and plan to repeat for detector1. An educated guess is that with proton id and displaced vertex, the pion will not make a huge difference
• SIDIS: Kaon s-quark polarization, low z low x coverage [at ATHENA https://indico.bnl.gov/event/16045/contributions/63851/attachments/41323/69300/PIDcoverage_cross-25_Kp_04z08_flat.png ]
• HF D->pi K and Quarkonia decays [link to Wangmei's slide]
• (Offline exchange with Zhangbu Xu) ATHENA study for diffractive-phi ID [ https://indico.bnl.gov/event/16045/contributions/63851/attachments/41323/69305/LPTOF_VM_group0813.pdf ]

We note that RICH in the threshold mode can compliment the ToF's phase space coverage. To be discussed in future meetings on detectors. 

4 Discussion