Status of J-PARC E73 experiment: first direct Hypertriton lifetime measurement with 3He(K--, π 0 ) 3Λ H reaction

Authors

  • T. Akaishi Osaka University
  • A. Sakaguchi Osaka University
  • T. Toda Osaka University
  • M. Tokuda Osaka University
  • H. Asano RIKEN
  • K. Itahashi RIKEN
  • M. Iwasaki RIKEN
  • Yue Ma RIKEN
  • R. Murayama RIKEN
  • H. Outa RIKEN
  • F. Sakuma RIKEN
  • T. Yamaga RIKEN
  • A. Clozza Laboratori Nazionali di Frascati dell’ INFN
  • C. Curceanu Laboratori Nazionali di Frascati dell’ INFN
  • R. Del Grande Laboratori Nazionali di Frascati dell’ INFN
  • C. Guaraldo Laboratori Nazionali di Frascati dell’ INFN
  • M. Iliescu Laboratori Nazionali di Frascati dell’ INFN
  • M. Miliucci Laboratori Nazionali di Frascati dell’ INFN
  • K. Piscicchia Laboratori Nazionali di Frascati dell’ INFN
  • A. Scordo Laboratori Nazionali di Frascati dell’ INFN
  • D. Sirghi Laboratori Nazionali di Frascati dell’ INFN
  • F. Sirghi Laboratori Nazionali di Frascati dell’ INFN
  • C. Han Chinese Academy of Sciences
  • X. Yuan Chinese Academy of Sciences
  • P. Zhang Chinese Academy of Sciences
  • Y. Zhang Chinese Academy of Sciences
  • T. Hashimoto Japan Atomic Energy Agency
  • K. Tanida Japan Atomic Energy Agency
  • S. Ishimoto High Energy Accelerator Research Organization
  • S. Suzuki High Energy Accelerator Research Organization
  • M. Sato High Energy Accelerator Research Organization
  • K. Inoue Osaka University
  • H. Noumi Osaka University
  • K. Shirotori Osaka University
  • H. Ohnishi Tohoku University
  • S. Okada Chubu University
  • H. Zhang Lanzhou University

DOI:

https://doi.org/10.31349/SuplRevMexFis.3.0308120

Keywords:

Hypertriton, lifetime puzzle, fast calorimeter

Abstract

In the last decade, heavy-ion based experiments (HypHI, STAR and ALICEi ) announced surprisingly short lifetime for 3 ΛH mesonic weak decay (MWD), which is difficult to interpret given the fact that 3 ΛH is a very loosely bound system. It will be very interesting to study this issue with a different experimental approach. We propose a direct measurement for 3 ΛH hypernucleus MWD lifetime with ∼10% precision as J-PARC E73 experiment; 4 ΛH hypernucleus lifetime will also be measured as a feasibility test for our experimental approach. In this proceeding, we will introduce the experimental method and the current status of E73 experiment.

References

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K. Agari et al., Prog. Theo. Exp. Phys., 02B011 (2012)

H. Outa et al., Nucl. Phys. A, 547 (1992) 109c

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Published

2022-06-20

How to Cite

1.
Akaishi T, Sakaguchi A, Toda T, Tokuda M, Asano H, Itahashi K, Iwasaki M, Ma Y, Murayama R, Outa H, Sakuma F, Yamaga T, Clozza A, Curceanu C, Del Grande R, Guaraldo C, Iliescu M, Miliucci M, Piscicchia K, Scordo A, Sirghi D, Sirghi F, Han C, Yuan X, Zhang P, Zhang Y, Hashimoto T, Tanida K, Ishimoto S, Suzuki S, Sato M, Inoue K, Noumi H, Shirotori K, Ohnishi H, Okada S, Zhang H. Status of J-PARC E73 experiment: first direct Hypertriton lifetime measurement with 3He(K--, π 0 ) 3Λ H reaction. Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 20 [cited 2022 Dec. 9];3(3):0308120 1-3. Available from: https://rmf.smf.mx/ojs/index.php/rmf-s/article/view/6244