Search for H-dibaryon at J-PARC with a Large Acceptance TPC

H. Sako; Jung Keun Ahn; K. Y. Baek; B. Bassalleck; H. Fujioka; L. Guo; S. Hasegawa; K. Hicks; R. Honda; S. H. Hwang; Y. Ichikawa; M. Ieiri; K. Imai; S. H. Kim; R. Kiuchi; H. S. Lee; K. Nakazawa; M. Naruki; A. Ni; M. Niiyama; K. Ozawa; J. Y. Park; S. H. Park; S. Y. Ryu; S. Sato; K. Shirotori; H. Sugimura; M. Sumihara; K. Tanida; H. Takahashi; T. Takahashi

doi:10.1051/epjconf/20146609015

Search for H-dibaryon at J-PARC with a Large Acceptance TPC

H. Sako, Jung Keun Ahn, K. Y. Baek, B. Bassalleck, H. Fujioka, L. Guo, S. Hasegawa, K. Hicks, R. Honda, S. H. Hwang, Y. Ichikawa, M. Ieiri, K. Imai, S. H. Kim, R. Kiuchi, H. S. Lee, K. Nakazawa, M. Naruki, A. Ni, M. NiiyamaK. Ozawa, J. Y. Park, S. H. Park, S. Y. Ryu, S. Sato, K. Shirotori, H. Sugimura, M. Sumihara, K. Tanida, H. Takahashi, T. Takahashi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

H-dibaryon has been predicted as a stable 6-quark color-singlet state. It has been searched for by many experiments but has never been discovered. Recent lattice QCD calculations predict H-dibaryon as a weakly bound or a resonant state close to the LL threshold. E224 and E522 experiments at KEK observed peaks in LL invariant mass spectra near the threshold in (K ^-, K ⁺) reactions, which were statistically not significant. Therefore, we proposed a new experiment E42 at J-PARC. It will measure decay products of ΛΛ and Λπ ^-p in a (K ^-, K ⁺) reaction. We design a large acceptance spectrometer based on a Time Projection Chamber (TPC) immersed in a dipole magnetic field. The TPC surrounds a target to cover nearly 4π acceptance, and accepts K ^- beams up to 10 ⁶ counts per second. To suppress drift field distortion at high beam rates, we adopt Gas Electron Multipliers (GEMs) for electron amplification and a gating grid. We show an overview of the experiment, the design of the spectrometer, and the R&D status of the TPC prototype.

Original language	English
Title of host publication	EPJ Web of Conferences
Volume	66
DOIs	https://doi.org/10.1051/epjconf/20146609015
Publication status	Published - 2014
Externally published	Yes
Event	2013 International Nuclear Physics Conference, INPC 2013 - Firenze, Italy Duration: 2013 Jun 2 → 2013 Jun 7

Other

Other	2013 International Nuclear Physics Conference, INPC 2013
Country	Italy
City	Firenze
Period	13/6/2 → 13/6/7

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1051/epjconf/20146609015

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Sako, H., Ahn, J. K., Baek, K. Y., Bassalleck, B., Fujioka, H., Guo, L., Hasegawa, S., Hicks, K., Honda, R., Hwang, S. H., Ichikawa, Y., Ieiri, M., Imai, K., Kim, S. H., Kiuchi, R., Lee, H. S., Nakazawa, K., Naruki, M., Ni, A., ... Takahashi, T. (2014). Search for H-dibaryon at J-PARC with a Large Acceptance TPC. In EPJ Web of Conferences (Vol. 66). [09015] https://doi.org/10.1051/epjconf/20146609015

Search for H-dibaryon at J-PARC with a Large Acceptance TPC. / Sako, H.; Ahn, Jung Keun; Baek, K. Y.; Bassalleck, B.; Fujioka, H.; Guo, L.; Hasegawa, S.; Hicks, K.; Honda, R.; Hwang, S. H.; Ichikawa, Y.; Ieiri, M.; Imai, K.; Kim, S. H.; Kiuchi, R.; Lee, H. S.; Nakazawa, K.; Naruki, M.; Ni, A.; Niiyama, M.; Ozawa, K.; Park, J. Y.; Park, S. H.; Ryu, S. Y.; Sato, S.; Shirotori, K.; Sugimura, H.; Sumihara, M.; Tanida, K.; Takahashi, H.; Takahashi, T.

EPJ Web of Conferences. Vol. 66 2014. 09015.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sako, H, Ahn, JK, Baek, KY, Bassalleck, B, Fujioka, H, Guo, L, Hasegawa, S, Hicks, K, Honda, R, Hwang, SH, Ichikawa, Y, Ieiri, M, Imai, K, Kim, SH, Kiuchi, R, Lee, HS, Nakazawa, K, Naruki, M, Ni, A, Niiyama, M, Ozawa, K, Park, JY, Park, SH, Ryu, SY, Sato, S, Shirotori, K, Sugimura, H, Sumihara, M, Tanida, K, Takahashi, H & Takahashi, T 2014, Search for H-dibaryon at J-PARC with a Large Acceptance TPC. in EPJ Web of Conferences. vol. 66, 09015, 2013 International Nuclear Physics Conference, INPC 2013, Firenze, Italy, 13/6/2. https://doi.org/10.1051/epjconf/20146609015

Sako, H. ; Ahn, Jung Keun ; Baek, K. Y. ; Bassalleck, B. ; Fujioka, H. ; Guo, L. ; Hasegawa, S. ; Hicks, K. ; Honda, R. ; Hwang, S. H. ; Ichikawa, Y. ; Ieiri, M. ; Imai, K. ; Kim, S. H. ; Kiuchi, R. ; Lee, H. S. ; Nakazawa, K. ; Naruki, M. ; Ni, A. ; Niiyama, M. ; Ozawa, K. ; Park, J. Y. ; Park, S. H. ; Ryu, S. Y. ; Sato, S. ; Shirotori, K. ; Sugimura, H. ; Sumihara, M. ; Tanida, K. ; Takahashi, H. ; Takahashi, T. / Search for H-dibaryon at J-PARC with a Large Acceptance TPC. EPJ Web of Conferences. Vol. 66 2014.

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title = "Search for H-dibaryon at J-PARC with a Large Acceptance TPC",

abstract = "H-dibaryon has been predicted as a stable 6-quark color-singlet state. It has been searched for by many experiments but has never been discovered. Recent lattice QCD calculations predict H-dibaryon as a weakly bound or a resonant state close to the LL threshold. E224 and E522 experiments at KEK observed peaks in LL invariant mass spectra near the threshold in (K -, K +) reactions, which were statistically not significant. Therefore, we proposed a new experiment E42 at J-PARC. It will measure decay products of ΛΛ and Λπ -p in a (K -, K +) reaction. We design a large acceptance spectrometer based on a Time Projection Chamber (TPC) immersed in a dipole magnetic field. The TPC surrounds a target to cover nearly 4π acceptance, and accepts K - beams up to 10 6 counts per second. To suppress drift field distortion at high beam rates, we adopt Gas Electron Multipliers (GEMs) for electron amplification and a gating grid. We show an overview of the experiment, the design of the spectrometer, and the R&D status of the TPC prototype.",

author = "H. Sako and Ahn, {Jung Keun} and Baek, {K. Y.} and B. Bassalleck and H. Fujioka and L. Guo and S. Hasegawa and K. Hicks and R. Honda and Hwang, {S. H.} and Y. Ichikawa and M. Ieiri and K. Imai and Kim, {S. H.} and R. Kiuchi and Lee, {H. S.} and K. Nakazawa and M. Naruki and A. Ni and M. Niiyama and K. Ozawa and Park, {J. Y.} and Park, {S. H.} and Ryu, {S. Y.} and S. Sato and K. Shirotori and H. Sugimura and M. Sumihara and K. Tanida and H. Takahashi and T. Takahashi",

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doi = "10.1051/epjconf/20146609015",

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note = "2013 International Nuclear Physics Conference, INPC 2013 ; Conference date: 02-06-2013 Through 07-06-2013",

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T1 - Search for H-dibaryon at J-PARC with a Large Acceptance TPC

AU - Sako, H.

AU - Ahn, Jung Keun

AU - Baek, K. Y.

AU - Bassalleck, B.

AU - Fujioka, H.

AU - Guo, L.

AU - Hasegawa, S.

AU - Hicks, K.

AU - Honda, R.

AU - Hwang, S. H.

AU - Ichikawa, Y.

AU - Ieiri, M.

AU - Imai, K.

AU - Kim, S. H.

AU - Kiuchi, R.

AU - Lee, H. S.

AU - Nakazawa, K.

AU - Naruki, M.

AU - Ni, A.

AU - Niiyama, M.

AU - Ozawa, K.

AU - Park, J. Y.

AU - Park, S. H.

AU - Ryu, S. Y.

AU - Sato, S.

AU - Shirotori, K.

AU - Sugimura, H.

AU - Sumihara, M.

AU - Tanida, K.

AU - Takahashi, H.

AU - Takahashi, T.

PY - 2014

Y1 - 2014

N2 - H-dibaryon has been predicted as a stable 6-quark color-singlet state. It has been searched for by many experiments but has never been discovered. Recent lattice QCD calculations predict H-dibaryon as a weakly bound or a resonant state close to the LL threshold. E224 and E522 experiments at KEK observed peaks in LL invariant mass spectra near the threshold in (K -, K +) reactions, which were statistically not significant. Therefore, we proposed a new experiment E42 at J-PARC. It will measure decay products of ΛΛ and Λπ -p in a (K -, K +) reaction. We design a large acceptance spectrometer based on a Time Projection Chamber (TPC) immersed in a dipole magnetic field. The TPC surrounds a target to cover nearly 4π acceptance, and accepts K - beams up to 10 6 counts per second. To suppress drift field distortion at high beam rates, we adopt Gas Electron Multipliers (GEMs) for electron amplification and a gating grid. We show an overview of the experiment, the design of the spectrometer, and the R&D status of the TPC prototype.

AB - H-dibaryon has been predicted as a stable 6-quark color-singlet state. It has been searched for by many experiments but has never been discovered. Recent lattice QCD calculations predict H-dibaryon as a weakly bound or a resonant state close to the LL threshold. E224 and E522 experiments at KEK observed peaks in LL invariant mass spectra near the threshold in (K -, K +) reactions, which were statistically not significant. Therefore, we proposed a new experiment E42 at J-PARC. It will measure decay products of ΛΛ and Λπ -p in a (K -, K +) reaction. We design a large acceptance spectrometer based on a Time Projection Chamber (TPC) immersed in a dipole magnetic field. The TPC surrounds a target to cover nearly 4π acceptance, and accepts K - beams up to 10 6 counts per second. To suppress drift field distortion at high beam rates, we adopt Gas Electron Multipliers (GEMs) for electron amplification and a gating grid. We show an overview of the experiment, the design of the spectrometer, and the R&D status of the TPC prototype.

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U2 - 10.1051/epjconf/20146609015

DO - 10.1051/epjconf/20146609015

M3 - Conference contribution

AN - SCOPUS:84898768568

VL - 66

BT - EPJ Web of Conferences

T2 - 2013 International Nuclear Physics Conference, INPC 2013

Y2 - 2 June 2013 through 7 June 2013

ER -