Precise Measurement of pi+ -> e+ nu Branching Ratio
E. Frle\v{z} (1), L. P. Alonzi (1), V. A. Baranov (2), W. Bertl (3),, M. Bychkov (1), Yu.M. Bystritsky (2), N.V. Khomutov (2), A.S. Korenchenko, (2), S.M. Korenchenko (2), M. Korolija (4), T. Kozlowski (5), N.P. Kravchuk, (2), N.A. Kuchinsky (2), D. Mekterovi\'c (4)
TL;DR
This paper reports on the PEN Collaboration's efforts to precisely measure the pi+ -> e+ nu branching ratio, aiming to improve experimental accuracy to match theoretical predictions, through detector development and testing.
Contribution
It introduces the PEN detector setup and its performance during development runs, advancing the precision measurement of the pi+ -> e+ nu decay.
Findings
Detector configuration established and tested
Achieved preliminary performance benchmarks
Progress towards targeted measurement accuracy
Abstract
The PEN Collaboration is conducting a new measurement of the pi+ -> e+ nu branching ratio at the Paul Scherrer Institute, with the goal uncertainty of delta B/B(pie2)=5E-4 or lower. At present, the combined accuracy of all published pie2 decay measurements lags behind the theoretical calculation by a factor of 40. In this contribution we report on the PEN detector configuration and its performance during two development runs done in 2007 and 2008.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.