On the measured lifetime of light hypernuclei 3ΛH and 4ΛH

• DOI: 10.1016/j.physletb.2013.12.037
• Publication Date: 2013-12-17T13:15:22Z
• Authors: C. Rappold; T.R. Saito; O. Bertini; S. Bianchin; V. Bozkurt; M. Kavatsyuk; E. Kim; Y. Ma; F. Maas; S. Minami; D. Nakajima; B. Özel-Tashenov; K. Yoshida
• Keywords: Nuclear and High Energy Physics; Lifetime measurement; Hypernuclei; Bayesian approach; 0103 physical sciences; info:eu-repo/classification/ddc/530; 01 natural sciences; Averaged combination

A statistical combination of the experimental lifetime estimations available in literatures is performed for 3ΛH and 4ΛH, including several recent measurements. The combined average values 4ΛH are respectively 216−16+19ps 192−18+20ps with a reduced χ2 0.89 0.48. new insight into estimation HypHI Phase 0 experiment by Bayesian approach also presented. In this approach, different prior distributions previous data Jeffrey used. principal mode smallest credible interval at 68% posterior distribution, given belief measurements, 217−16+19ps 194−18+20ps 4ΛH. two employed approaches have revealed that hypernuclei can be shorter than Λ–hyperon lifetime.