E73/T77 PAC Presentation

September 30, 2026

Proposal / LOI

l (T77) Feasibility study for 3ΛH mesonic weak decay lifetime measurement with ⁴He(K^-, π⁰)⁴_ΛH reaction (The 29^th PAC, January 2020)

l ^{3_ΛH and 4_ΛH mesonic weak decay lifetime measurement with 3,4He(K-,π0)3,4_ΛH reaction} (The 27^th PAC, July 2018)

l ^{3_ΛH and 4_ΛH mesonic weak decay lifetime measurement with 3,4He(K-,π0)3,4_ΛH reaction} (The 26^th PAC, July 2018)

PAC

l The 40^th PAC (July 16 − 18, 2025) Agenda Minutes

Ø E73 [K1.8BR] Lifetime measurement of ³_ΛH

l The 39^th PAC (January 8 − 10, 2025) Agenda Minutes

Ø Hadron Hall K1.8/K1.8BR plan and request summary

l The 38^th PAC (July 30 − August 1, 2024) Agenda Minutes

Ø Hadron Hall K1.8/K1.8BR plan and request summary

l The 37^th PAC (January 24 − 26, 2024) Agenda Minutes

Ø E73 [K1.8BR] Lifetime measurement of ³_ΛH

Ø Hadron Hall K1.8/K1.8BR plan and request summary

l The 36^th PAC (July 19 − 21, 2023) Agenda Minutes

Ø E73 [K1.8BR] Lifetime measurement of ³_ΛH

l The 35^th PAC (January 23 −25, 2023) Agenda Minutes

Ø E73 [K1.8BR] Lifetime measurement of ³_ΛH

Ø Hadron Hall K1.8/K1.8BR plan and request summary

l The 34^th PAC (August 3 − 5, 2022) Agenda Minutes

Ø E73 [K1.8BR] Lifetime measurement of ³_ΛH

Ø Hadron Hall K1.8/K1.8BR plan and request summary

l The 33^rd PAC (January 19 − 22, 2022) Agenda Minutes

Ø E73 [K1.8BR] (Lifetime measurement of ³_ΛH)

Ø K1.8/K1.8BR plan and beam time request summary

l The 32^nd PAC (July 14 − 17, 2021) Agenda Minutes

Ø E73 [K1.8BR] - Lifetime measurement of ³_ΛH

l The 31^st PAC (January 20 − 23, 2021) Agenda Minutes

Ø E73/T77 [K1.8BR] (³_ΛH mesonic weak decay lifetime measurement)

l The 30^th PAC (July 20 − 22, 2020) Agenda Minutes

Ø T77 [K1.8BR] (P73: Feasibility study for ³_ΛH mesonic weak decay lifetime measurement)

l The 29^th PAC (January 16 − 18, 2020) Agenda Minutes

Ø P73, P77 [K1.8BR] (³_ΛH and ⁴_ΛH mesonic weak decay lifetime measurement with ^3,4He(K^-,π⁰)^3,4_ΛH reaction)

Ø K1.8/K1.8BR request summary & K1.8 floor plan (mid-term)

l The 28^th PAC (July 16 − 18, 2019) Agenda Minutes

Ø P73 [K1.8BR] (³_ΛH and ⁴_ΛH mesonic weak decay lifetime measurement with ^3,4He(K^-,π⁰)^3,4_ΛH reaction)

Ø K1.8/K1.8BR request summary & K1.8 floor plan (mid-term)

l The 27^th PAC (January 16 − 18, 2019) Agenda Minutes

Ø P73 [K1.8BR] (³_ΛH and ⁴_ΛH mesonic weak decay lifetime measurement with ^3,4He(K^-,π⁰)^3,4_ΛH reaction)

l The 26^th PAC (July 18 − 20, 2018) Agenda Minutes

Ø P73 (³_ΛH and ⁴_ΛH mesonic weak decay lifetime measurement with ^3,4He(K,pi)^3,4_ΛH reaction)