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Nuclear Experiment

arXiv:1702.03099 (nucl-ex)
[Submitted on 10 Feb 2017]

Title:Precise neutron lifetime experiment using pulsed neutron beams at J-PARC

Authors:Naoki Nagakura, Katsuya Hirota, Sei Ieki, Takashi Ino, Yoshihisa Iwashita, Masaaki Kitaguchi, Ryunosuke Kitahara, Kenji Mishima, Aya Morishita, Hideyuki Oide, Hidetoshi Otono, Risa Sakakibara, Yoshichika Seki, Tatsushi Shima, Hirohiko M. Shimizu, Tomoaki Sugino, Naoyuki Sumi, Hiroshima Sumino, Kaoru Taketani, Genki Tanaka, Tatsuhiko Tomita, Takahito Yamada, Satoru Yamashita, Mami Yokohashi, Tamaki Yoshioka
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Abstract:The neutron lifetime is one of the basic parameters in the weak interaction, and is used for predicting the light element abundance in the early universe. Our group developed a new setup to measure the lifetime with the goal precision of 0.1% at the polarized beam branch BL05 of MLF, J-PARC. The commissioning data was acquired in 2014 and 2015, and the first set of data to evaluate the lifetime in 2016, which is expected to yield a statistical uncertainty of O(1)%. This paper presents the current analysis results and the future plans to achieve our goal precision.
Comments: 8 pages, 7 figures, 2 tables, the 26th International Nuclear Physics Conference
Subjects: Nuclear Experiment (nucl-ex); Instrumentation and Detectors (physics.ins-det)
Cite as: arXiv:1702.03099 [nucl-ex]
  (or arXiv:1702.03099v1 [nucl-ex] for this version)
  https://doi.org/10.48550/arXiv.1702.03099

Submission history

From: Naoki Nagakura [view email]
[v1] Fri, 10 Feb 2017 08:51:44 UTC (2,362 KB)
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