Status of the PIENU experiment at TRIUMF

4th Symposium on Prospects in the Physics of Discrete Symmetries

Ito, S.^1 ; Aguilar-Arevalo, A.^2 ; Aoki, M.^1 ; Blecher, M.^3 ; Britton, D.I.^4 ; Bryman, D.A.^5 ; Vom Bruch, D.^5 ; Chen, S.^6 ; Comfort, J.^7 ; Cuen-Rochin, S.^5 ; Doria, L.^8 ; Gumplinger, P.^8 ; Hussein, A.^9 ; Igarashi, Y.^10 ; Kettell, S.^11 ; Kurchaninov, L.^8 ; Littenberg, L.^11 ; Malbrunot, C.^5,12 ; Mischke, R.E.^8 ; Numao, T.^8 ; Protopopescu, D.^4 ; Sher, A.^8 ; Sullivan, T.^5 ; Vavilov, D.^8

Osaka University, Toyonaka, Osaka

560-0043, Japan^1

Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de Mexico, Mexico^2

Virginia Tech., Blacksburg

VA

24061, United States^3

University of Glasgow, Glasgow, United Kingdom^4

University of British Columbia, Vancouver

BC

V6T 1Z1, Canada^5

Tsinghua University, Beijing

100084, China^6

Arizona State University, Tempe

AZ

85287, United States^7

TRIUMF, 4004 Wesbrook Mall, Vancouver

BC

V6T 2A3, Canada^8

University of Northern British Columbia, Prince George

BC

V2N 4Z9, Canada

(10) KEK, 1-1 Oho, Tsukuba-shi, Ibaraki

305-0801, Japan

(11) Brookhaven National Laboratory, Upton

NY

11973-5000, United States

(12) Present Address: CERN, Genéve 23

CH-1211, Switzerland^9

关键词: Branching ratio;    New physics;    Stringent test;    The standard model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/631/1/012044/pdf
DOI  :  10.1088/1742-6596/631/1/012044

来源: IOP

【 摘 要 】

The PIENU experiment at TRIUMF aims to measure the branching ratio of pion decays R = Γ(π+→ e+νe+ π+→ e+νeγ)/Γ(π+→μ+νμ+ π+→ μ+νμγ) with precision