Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron

T. Ishikawa; H. Fujimura; H. Fukasawa; R. Hashimoto; Q. He; Y. Honda; T. Iwata; S. Kaida; H. Kanda; J. Kasagi; A. Kawano; S. Kuwasaki; K. Maeda; S. Masumoto; M. Miyabe; F. Miyahara; K. Mochizuki; N. Muramatsu; A. Nakamura; K. Nawa; S. Ogushi; Y. Okada; Y. Onodera; K. Ozawa; Y. Sakamoto; M. Sato; H. Shimizu; H. Sugai; K. Suzuki; Y. Tajima; S. Takahashi; Y. Taniguchi; Y. Tsuchikawa; H. Yamazaki; R. Yamazaki; H. Y. Yoshida

doi:10.5506/APhysPolB.51.329

Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron

T. Ishikawa, H. Fujimura, H. Fukasawa, R. Hashimoto, Q. He, Y. Honda, T. Iwata, S. Kaida, H. Kanda, J. Kasagi, A. Kawano, S. Kuwasaki, K. Maeda, S. Masumoto, M. Miyabe, F. Miyahara, K. Mochizuki, N. Muramatsu, A. Nakamura, K. NawaS. Ogushi, Y. Okada, Y. Onodera, K. Ozawa, Y. Sakamoto, M. Sato, H. Shimizu, H. Sugai, K. Suzuki, Y. Tajima, S. Takahashi, Y. Taniguchi, Y. Tsuchikawa, H. Yamazaki, R. Yamazaki, H. Y. Yoshida

Research Center for Electron Photon Science (ELPH)

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

3 Citations (Scopus)

Abstract

We have investigated the γd → π⁰π⁰d reaction to study dibaryon resonances. The total cross section as a function of the γd center-of-mass energy shows resonance-like behavior peaked at around 2.47 and 2.63 GeV. The measured angular distribution of deuteron emission is rather flat, which cannot be reproduced by kinematics for quasi-free π⁰π⁰ production with deuteron coalescence. A clear peak is observed at 2.14 GeV in the π⁰d invariant-mass distributions. The present work shows a sequential process γd → R_IS → π⁰R_IV → π⁰π⁰d is dominant with two 2.47- and 2.63-GeV isoscalar dibaryons (R_IS) and a 2.14-GeV isovector dibaryon (R_IV).

Original language	English
Pages (from-to)	329-332
Number of pages	4
Journal	Acta Physica Polonica B
Volume	51
Issue number	1
DOIs	https://doi.org/10.5506/APhysPolB.51.329
Publication status	Published - 2020

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10.5506/APhysPolB.51.329

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Ishikawa, T., Fujimura, H., Fukasawa, H., Hashimoto, R., He, Q., Honda, Y., Iwata, T., Kaida, S., Kanda, H., Kasagi, J., Kawano, A., Kuwasaki, S., Maeda, K., Masumoto, S., Miyabe, M., Miyahara, F., Mochizuki, K., Muramatsu, N., Nakamura, A., ... Yoshida, H. Y. (2020). Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron. Acta Physica Polonica B, 51(1), 329-332. https://doi.org/10.5506/APhysPolB.51.329

@article{e8ccb208db614db8a8608b56e87c6cc7,

title = "Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron",

abstract = "We have investigated the γd → π0π0d reaction to study dibaryon resonances. The total cross section as a function of the γd center-of-mass energy shows resonance-like behavior peaked at around 2.47 and 2.63 GeV. The measured angular distribution of deuteron emission is rather flat, which cannot be reproduced by kinematics for quasi-free π0π0 production with deuteron coalescence. A clear peak is observed at 2.14 GeV in the π0d invariant-mass distributions. The present work shows a sequential process γd → RIS → π0RIV → π0π0d is dominant with two 2.47- and 2.63-GeV isoscalar dibaryons (RIS) and a 2.14-GeV isovector dibaryon (RIV).",

author = "T. Ishikawa and H. Fujimura and H. Fukasawa and R. Hashimoto and Q. He and Y. Honda and T. Iwata and S. Kaida and H. Kanda and J. Kasagi and A. Kawano and S. Kuwasaki and K. Maeda and S. Masumoto and M. Miyabe and F. Miyahara and K. Mochizuki and N. Muramatsu and A. Nakamura and K. Nawa and S. Ogushi and Y. Okada and Y. Onodera and K. Ozawa and Y. Sakamoto and M. Sato and H. Shimizu and H. Sugai and K. Suzuki and Y. Tajima and S. Takahashi and Y. Taniguchi and Y. Tsuchikawa and H. Yamazaki and R. Yamazaki and Yoshida, {H. Y.}",

note = "Funding Information: The authors express gratitude to the ELPH staff for assistance during the FOREST experiments. This work was supported in part by JSPS KAKENHI grants Nos. 17340063, 19002003, 24244022, 26400287, 16H02188, 19H01902, and 19H05141. Publisher Copyright: {\textcopyright} 2020 Jagellonian University. All rights reserved.",

year = "2020",

doi = "10.5506/APhysPolB.51.329",

language = "English",

volume = "51",

pages = "329--332",

journal = "Acta Physica Polonica B",

issn = "0587-4254",

publisher = "Jagellonian University",

number = "1",

}

Ishikawa, T, Fujimura, H, Fukasawa, H, Hashimoto, R, He, Q, Honda, Y, Iwata, T, Kaida, S, Kanda, H, Kasagi, J, Kawano, A, Kuwasaki, S, Maeda, K, Masumoto, S, Miyabe, M, Miyahara, F, Mochizuki, K, Muramatsu, N, Nakamura, A, Nawa, K, Ogushi, S, Okada, Y, Onodera, Y, Ozawa, K, Sakamoto, Y, Sato, M, Shimizu, H, Sugai, H, Suzuki, K, Tajima, Y, Takahashi, S, Taniguchi, Y, Tsuchikawa, Y, Yamazaki, H, Yamazaki, R & Yoshida, HY 2020, 'Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron', Acta Physica Polonica B, vol. 51, no. 1, pp. 329-332. https://doi.org/10.5506/APhysPolB.51.329

TY - JOUR

T1 - Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron

AU - Ishikawa, T.

AU - Fujimura, H.

AU - Fukasawa, H.

AU - Hashimoto, R.

AU - He, Q.

AU - Honda, Y.

AU - Iwata, T.

AU - Kaida, S.

AU - Kanda, H.

AU - Kasagi, J.

AU - Kawano, A.

AU - Kuwasaki, S.

AU - Maeda, K.

AU - Masumoto, S.

AU - Miyabe, M.

AU - Miyahara, F.

AU - Mochizuki, K.

AU - Muramatsu, N.

AU - Nakamura, A.

AU - Nawa, K.

AU - Ogushi, S.

AU - Okada, Y.

AU - Onodera, Y.

AU - Ozawa, K.

AU - Sakamoto, Y.

AU - Sato, M.

AU - Shimizu, H.

AU - Sugai, H.

AU - Suzuki, K.

AU - Tajima, Y.

AU - Takahashi, S.

AU - Taniguchi, Y.

AU - Tsuchikawa, Y.

AU - Yamazaki, H.

AU - Yamazaki, R.

AU - Yoshida, H. Y.

N1 - Funding Information: The authors express gratitude to the ELPH staff for assistance during the FOREST experiments. This work was supported in part by JSPS KAKENHI grants Nos. 17340063, 19002003, 24244022, 26400287, 16H02188, 19H01902, and 19H05141. Publisher Copyright: © 2020 Jagellonian University. All rights reserved.

PY - 2020

Y1 - 2020

N2 - We have investigated the γd → π0π0d reaction to study dibaryon resonances. The total cross section as a function of the γd center-of-mass energy shows resonance-like behavior peaked at around 2.47 and 2.63 GeV. The measured angular distribution of deuteron emission is rather flat, which cannot be reproduced by kinematics for quasi-free π0π0 production with deuteron coalescence. A clear peak is observed at 2.14 GeV in the π0d invariant-mass distributions. The present work shows a sequential process γd → RIS → π0RIV → π0π0d is dominant with two 2.47- and 2.63-GeV isoscalar dibaryons (RIS) and a 2.14-GeV isovector dibaryon (RIV).

AB - We have investigated the γd → π0π0d reaction to study dibaryon resonances. The total cross section as a function of the γd center-of-mass energy shows resonance-like behavior peaked at around 2.47 and 2.63 GeV. The measured angular distribution of deuteron emission is rather flat, which cannot be reproduced by kinematics for quasi-free π0π0 production with deuteron coalescence. A clear peak is observed at 2.14 GeV in the π0d invariant-mass distributions. The present work shows a sequential process γd → RIS → π0RIV → π0π0d is dominant with two 2.47- and 2.63-GeV isoscalar dibaryons (RIS) and a 2.14-GeV isovector dibaryon (RIV).

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UR - http://www.scopus.com/inward/citedby.url?scp=85078571656&partnerID=8YFLogxK

U2 - 10.5506/APhysPolB.51.329

DO - 10.5506/APhysPolB.51.329

M3 - Article

AN - SCOPUS:85078571656

SN - 0587-4254

VL - 51

SP - 329

EP - 332

JO - Acta Physica Polonica B

JF - Acta Physica Polonica B

IS - 1

ER -

Non-strange dibaryons studied in coherent double neutral-meson photoproduction on the deuteron

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