Neutron lifetime measurement with pulsed cold neutrons

K. Hirota; G. Ichikawa; S. Ieki; T. Ino; Y. Iwashita; M. Kitaguchi; R. Kitahara; J. Koga; K. Mishima; T. Mogi; K. Morikawa; A. Morishita; N. Nagakura; H. Oide; H. Okabe; H. Otono; Y. Seki; D. Sekiba; T. Shima; H. M. Shimizu; N. Sumi; H. Sumino; T. Tomita; H. Uehara; T. Yamada; S. Yamashita; K. Yano; M. Yokohashi; T. Yoshioka

doi:10.1093/ptep/ptaa169

Neutron lifetime measurement with pulsed cold neutrons

K. Hirota, G. Ichikawa, S. Ieki, T. Ino, Y. Iwashita, M. Kitaguchi, R. Kitahara, J. Koga, K. Mishima, T. Mogi, K. Morikawa, A. Morishita, N. Nagakura, H. Oide, H. Okabe, H. Otono, Y. Seki, D. Sekiba, T. Shima, H. M. ShimizuN. Sumi, H. Sumino, T. Tomita, H. Uehara, T. Yamada, S. Yamashita, K. Yano, M. Yokohashi, T. Yoshioka

Research Center for Advanced Particle Physics

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s.

Original language	English
Article number	123C02
Journal	Progress of Theoretical and Experimental Physics
Volume	2020
Issue number	12
DOIs	https://doi.org/10.1093/ptep/ptaa169
Publication status	Published - Dec 1 2020

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1093/ptep/ptaa169

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Hirota, K., Ichikawa, G., Ieki, S., Ino, T., Iwashita, Y., Kitaguchi, M., Kitahara, R., Koga, J., Mishima, K., Mogi, T., Morikawa, K., Morishita, A., Nagakura, N., Oide, H., Okabe, H., Otono, H., Seki, Y., Sekiba, D., Shima, T., ... Yoshioka, T. (2020). Neutron lifetime measurement with pulsed cold neutrons. Progress of Theoretical and Experimental Physics, 2020(12), Article 123C02. https://doi.org/10.1093/ptep/ptaa169

Hirota, K, Ichikawa, G, Ieki, S, Ino, T, Iwashita, Y, Kitaguchi, M, Kitahara, R, Koga, J, Mishima, K, Mogi, T, Morikawa, K, Morishita, A, Nagakura, N, Oide, H, Okabe, H, Otono, H, Seki, Y, Sekiba, D, Shima, T, Shimizu, HM, Sumi, N, Sumino, H, Tomita, T, Uehara, H, Yamada, T, Yamashita, S, Yano, K, Yokohashi, M & Yoshioka, T 2020, 'Neutron lifetime measurement with pulsed cold neutrons', Progress of Theoretical and Experimental Physics, vol. 2020, no. 12, 123C02. https://doi.org/10.1093/ptep/ptaa169

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title = "Neutron lifetime measurement with pulsed cold neutrons",

abstract = "The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s. ",

author = "K. Hirota and G. Ichikawa and S. Ieki and T. Ino and Y. Iwashita and M. Kitaguchi and R. Kitahara and J. Koga and K. Mishima and T. Mogi and K. Morikawa and A. Morishita and N. Nagakura and H. Oide and H. Okabe and H. Otono and Y. Seki and D. Sekiba and T. Shima and Shimizu, {H. M.} and N. Sumi and H. Sumino and T. Tomita and H. Uehara and T. Yamada and S. Yamashita and K. Yano and M. Yokohashi and T. Yoshioka",

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T1 - Neutron lifetime measurement with pulsed cold neutrons

AU - Hirota, K.

AU - Ichikawa, G.

AU - Ieki, S.

AU - Ino, T.

AU - Iwashita, Y.

AU - Kitaguchi, M.

AU - Kitahara, R.

AU - Koga, J.

AU - Mishima, K.

AU - Mogi, T.

AU - Morikawa, K.

AU - Morishita, A.

AU - Nagakura, N.

AU - Oide, H.

AU - Okabe, H.

AU - Otono, H.

AU - Seki, Y.

AU - Sekiba, D.

AU - Shima, T.

AU - Shimizu, H. M.

AU - Sumi, N.

AU - Sumino, H.

AU - Tomita, T.

AU - Uehara, H.

AU - Yamada, T.

AU - Yamashita, S.

AU - Yano, K.

AU - Yokohashi, M.

AU - Yoshioka, T.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s.

AB - The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3He(n,p)3H reaction using a gas chamber, the working gas of which contains diluted 3He. The measured neutron lifetime was 898 ± 10stat+15-18 sys s.

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U2 - 10.1093/ptep/ptaa169

DO - 10.1093/ptep/ptaa169

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VL - 2020

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 12

M1 - 123C02

ER -

Neutron lifetime measurement with pulsed cold neutrons

Abstract

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