Experimental status toward the direct lifetime measurement of Hypertriton using the (K−, π0) reaction at J-PARC

T. Akaishi; H. Asano; X. Chen; A. Clozza; C. Curceanu; R. Del Grande; C. Guaraldo; C. Han; T. Hashimoto; M. Iliescu; K. Inoue; S. Ishimoto; K. Itahashi; M. Iwasaki; Y. Ma; R. Murayama; M. Miliucci; H. Noumi; H. Ohnishi; S. Okada; H. Outa; K. Piscicchia; A. Sakaguchi; F. Sakuma; M. Sato; A. Scordo; D. Sirghi; F. Sirghi; K. Shirotori; S. Suzuki; K. Tanida; T. Toda; M. Tokuda; T. Yamaga; X. Yuan; P. Zhang; Y. Zhang; H. Zhang

Experimental status toward the direct lifetime measurement of Hypertriton using the (K⁻, π⁰) reaction at J-PARC

T. Akaishi, H. Asano, X. Chen, A. Clozza, C. Curceanu, R. Del Grande, C. Guaraldo, C. Han, T. Hashimoto, M. Iliescu, K. Inoue, S. Ishimoto, K. Itahashi, M. Iwasaki, Y. Ma, R. Murayama, M. Miliucci, H. Noumi, H. Ohnishi, S. OkadaH. Outa, K. Piscicchia, A. Sakaguchi, F. Sakuma, M. Sato, A. Scordo, D. Sirghi, F. Sirghi, K. Shirotori, S. Suzuki, K. Tanida, T. Toda, M. Tokuda, T. Yamaga, X. Yuan, P. Zhang, Y. Zhang, H. Zhang

Research Center for Electron Photon Science (ELPH)

Research output: Contribution to journal › Conference article › peer-review

Abstract

In order to shed light on hypertriton lifetime puzzle, we will measure the hypertriton lifetime in time domain directly as an independent and complementary approach from heavy-ion experiments. We employ the (K⁻, π⁰) reaction to populate hypertriton using a K⁻ beam at J-PARC. By detecting a high-energy gamma-ray decaying from π⁰ at forward angle, this reaction can be tagged efficiently. We newly developed PbF₂ calorimeter and the performance was evaluated with positron and hadron beams. We found that the energy resolution is σ/E = 5.0 %/√E/GeV, which is sufficient for the high-energy gamma-ray tagging in our experiment.

Original language	English
Article number	214
Journal	Proceedings of Science
Volume	380
Publication status	Published - 2022 May 24
Event	22nd Particles and Nuclei International Conference, PANIC 2021 - Virtual, Online, Portugal Duration: 2021 Sept 5 → 2021 Sept 10

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Akaishi, T., Asano, H., Chen, X., Clozza, A., Curceanu, C., Del Grande, R., Guaraldo, C., Han, C., Hashimoto, T., Iliescu, M., Inoue, K., Ishimoto, S., Itahashi, K., Iwasaki, M., Ma, Y., Murayama, R., Miliucci, M., Noumi, H., Ohnishi, H., ... Zhang, H. (2022). Experimental status toward the direct lifetime measurement of Hypertriton using the (K⁻, π⁰) reaction at J-PARC. Proceedings of Science, 380, [214].

Akaishi, T, Asano, H, Chen, X, Clozza, A, Curceanu, C, Del Grande, R, Guaraldo, C, Han, C, Hashimoto, T, Iliescu, M, Inoue, K, Ishimoto, S, Itahashi, K, Iwasaki, M, Ma, Y, Murayama, R, Miliucci, M, Noumi, H, Ohnishi, H, Okada, S, Outa, H, Piscicchia, K, Sakaguchi, A, Sakuma, F, Sato, M, Scordo, A, Sirghi, D, Sirghi, F, Shirotori, K, Suzuki, S, Tanida, K, Toda, T, Tokuda, M, Yamaga, T, Yuan, X, Zhang, P, Zhang, Y & Zhang, H 2022, 'Experimental status toward the direct lifetime measurement of Hypertriton using the (K⁻, π⁰) reaction at J-PARC', Proceedings of Science, vol. 380, 214.

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title = "Experimental status toward the direct lifetime measurement of Hypertriton using the (K−, π0) reaction at J-PARC",

abstract = "In order to shed light on hypertriton lifetime puzzle, we will measure the hypertriton lifetime in time domain directly as an independent and complementary approach from heavy-ion experiments. We employ the (K−, π0) reaction to populate hypertriton using a K− beam at J-PARC. By detecting a high-energy gamma-ray decaying from π0 at forward angle, this reaction can be tagged efficiently. We newly developed PbF2 calorimeter and the performance was evaluated with positron and hadron beams. We found that the energy resolution is σ/E = 5.0 %/√E/GeV, which is sufficient for the high-energy gamma-ray tagging in our experiment.",

author = "T. Akaishi and H. Asano and X. Chen and A. Clozza and C. Curceanu and {Del Grande}, R. and C. Guaraldo and C. Han and T. Hashimoto and M. Iliescu and K. Inoue and S. Ishimoto and K. Itahashi and M. Iwasaki and Y. Ma and R. Murayama and M. Miliucci and H. Noumi and H. Ohnishi and S. Okada and H. Outa and K. Piscicchia and A. Sakaguchi and F. Sakuma and M. Sato and A. Scordo and D. Sirghi and F. Sirghi and K. Shirotori and S. Suzuki and K. Tanida and T. Toda and M. Tokuda and T. Yamaga and X. Yuan and P. Zhang and Y. Zhang and H. Zhang",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0); 22nd Particles and Nuclei International Conference, PANIC 2021 ; Conference date: 05-09-2021 Through 10-09-2021",

year = "2022",

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T1 - Experimental status toward the direct lifetime measurement of Hypertriton using the (K−, π0) reaction at J-PARC

AU - Akaishi, T.

AU - Asano, H.

AU - Chen, X.

AU - Clozza, A.

AU - Curceanu, C.

AU - Del Grande, R.

AU - Guaraldo, C.

AU - Han, C.

AU - Hashimoto, T.

AU - Iliescu, M.

AU - Inoue, K.

AU - Ishimoto, S.

AU - Itahashi, K.

AU - Iwasaki, M.

AU - Ma, Y.

AU - Murayama, R.

AU - Miliucci, M.

AU - Noumi, H.

AU - Ohnishi, H.

AU - Okada, S.

AU - Outa, H.

AU - Piscicchia, K.

AU - Sakaguchi, A.

AU - Sakuma, F.

AU - Sato, M.

AU - Scordo, A.

AU - Sirghi, D.

AU - Sirghi, F.

AU - Shirotori, K.

AU - Suzuki, S.

AU - Tanida, K.

AU - Toda, T.

AU - Tokuda, M.

AU - Yamaga, T.

AU - Yuan, X.

AU - Zhang, P.

AU - Zhang, Y.

AU - Zhang, H.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

PY - 2022/5/24

Y1 - 2022/5/24

N2 - In order to shed light on hypertriton lifetime puzzle, we will measure the hypertriton lifetime in time domain directly as an independent and complementary approach from heavy-ion experiments. We employ the (K−, π0) reaction to populate hypertriton using a K− beam at J-PARC. By detecting a high-energy gamma-ray decaying from π0 at forward angle, this reaction can be tagged efficiently. We newly developed PbF2 calorimeter and the performance was evaluated with positron and hadron beams. We found that the energy resolution is σ/E = 5.0 %/√E/GeV, which is sufficient for the high-energy gamma-ray tagging in our experiment.

AB - In order to shed light on hypertriton lifetime puzzle, we will measure the hypertriton lifetime in time domain directly as an independent and complementary approach from heavy-ion experiments. We employ the (K−, π0) reaction to populate hypertriton using a K− beam at J-PARC. By detecting a high-energy gamma-ray decaying from π0 at forward angle, this reaction can be tagged efficiently. We newly developed PbF2 calorimeter and the performance was evaluated with positron and hadron beams. We found that the energy resolution is σ/E = 5.0 %/√E/GeV, which is sufficient for the high-energy gamma-ray tagging in our experiment.

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M3 - Conference article

AN - SCOPUS:85131681339

SN - 1824-8039

VL - 380

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 214

T2 - 22nd Particles and Nuclei International Conference, PANIC 2021

Y2 - 5 September 2021 through 10 September 2021

ER -

Experimental status toward the direct lifetime measurement of Hypertriton using the (K⁻, π⁰) reaction at J-PARC

Abstract

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