Long-lived neutral-kaon flux measurement for the KOTO experiment

Masuda, T.; Ahn, J. K.; Banno, S.; Campbell, M.; Comfort, J.; Duh, Y. T.; Hineno, T.; Hsiung, Y. B.; Inagaki, T.; Iwai, E.; Kawasaki, N.; Kim, E. J.; Kim, Y. J.; Ko, J. W.; Komatsubara, T. K.; Kurilin, A. S.; Lee, G. H.; Lee, J. W.; Lee, S. K.; Lim, G. Y.; Ma, J.; MacFarland, D.; Maeda, Y.; Matsumura, T.; Murayama, R.; Naito, D.; Nakaya, Y.; Nanjo, H.; Nomura, T.; Odani, Y.; Okuno, H.; Ri, Y. D.; Sasao, N.; Sato, K.; Sato, T.; Seki, S.; Shimogawa, T.; Shinkawa, T.; Shiomi, K.; Son, J. S.; Sugiyama, Y.; Suzuki, S.; Tajima, Y.; Takahashi, G.; Takashima, Y.; Tecchio, M.; Togawa, M.; Toyoda, T.; Tung, Y. C.; Wah, Y. W.; Watanabe, H.; Woo, J. K.; Xu, J.; Yamanaka, T.; Yanagida, Y.; Yoshida, H. Y.; Yoshimoto, H.

doi:10.1093/ptep/ptv171

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Long-lived neutral-kaon flux measurement for the KOTO experiment

Masuda, T.;
Ahn, J. K.;
Banno, S.;
Campbell, M.;
Comfort, J.;
외 52명

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WEB OF SCIENCE

14

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16

초록

The KOTO(K-0 at Tokai) experiment aims to observe the CP-violating rare decay K-L -> pi(0) nu(nu) over bar by using a long-lived neutral-kaon beam produced by the 30 GeV proton beam at the Japan Proton Accelerator Research Complex. The K-L flux is an essential parameter for the measurement of the branching fraction. Three K-L neutral decay modes, K-L -> 3 pi(0), K-L -> 2 pi(0), and K-L -> 2 gamma, were used to measure the K-L flux in the beam line in the 2013 KOTO engineering run. A Monte Carlo simulation was used to estimate the detector acceptance for these decays. Agreement was found between the simulation model and the experimental data, and the remaining systematic uncertainty was estimated at the 1.4% level. The K-L flux was measured as (4.183 +/- 0.017(stat.) +/- 0.059(sys.)) x 10(7) K-L per 2 x 10(14) protons on a 66-mm-long Au target.

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제목: Long-lived neutral-kaon flux measurement for the KOTO experiment

저자: Masuda, T.; Ahn, J. K.; Banno, S.; Campbell, M.; Comfort, J.; Duh, Y. T.; Hineno, T.; Hsiung, Y. B.; Inagaki, T.; Iwai, E.; Kawasaki, N.; Kim, E. J.; Kim, Y. J.; Ko, J. W.; Komatsubara, T. K.; Kurilin, A. S.; Lee, G. H.; Lee, J. W.; Lee, S. K.; Lim, G. Y.; Ma, J.; MacFarland, D.; Maeda, Y.; Matsumura, T.; Murayama, R.; Naito, D.; Nakaya, Y.; Nanjo, H.; Nomura, T.; Odani, Y.; Okuno, H.; Ri, Y. D.; Sasao, N.; Sato, K.; Sato, T.; Seki, S.; Shimogawa, T.; Shinkawa, T.; Shiomi, K.; Son, J. S.; Sugiyama, Y.; Suzuki, S.; Tajima, Y.; Takahashi, G.; Takashima, Y.; Tecchio, M.; Togawa, M.; Toyoda, T.; Tung, Y. C.; Wah, Y. W.; Watanabe, H.; Woo, J. K.; Xu, J.; Yamanaka, T.; Yanagida, Y.; Yoshida, H. Y.; Yoshimoto, H.

DOI: 10.1093/ptep/ptv171

발행일: 2016-01

유형: Article

저널명: Progress of Theoretical and Experimental Physics

권: 2016

호: 1

언어: ENG

출판사: OXFORD UNIV PRESS INC

발행국가: 미국

ISSN: E 2050-3911
P 2050-3911