Search for the H-dibaryon near ΛΛ and Ξp thresholds at J-PARC

for the J-PARC E42 Collaboration

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A recent claim from the LHCb collaboration on the observation of two hidden-charm pentaquark states revives hopes for experimental discoveries of other multiquark baryonic states such as the H-dibaryon with a 6-quark (uuddss) configuration. Recent theoretical predictions for the mass of H-dibaryon pointing to the mass region near the ΛΛ threshold also encourage experimental searches. We have proposed a dedicated experiment to search for the H-dibaryon in the bound and unbound mass regions near ΛΛ threshold. We plan to measure production of Λ pπ, ΛΛ and Ξ p systems in the12C(K, K+) reaction at J-PARC. We are now constructing a large-acceptance hyperon spectrometer consisting of a superconducting dipole magnet and a time projection chamber, which allows conclusive experimental searches with a precise 1-MeV mass resolution.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - 2017
Event17th International Conference on Hadron Spectroscopy and Structure, Hadron 2017 - Salamanca, Spain
Duration: 2017 Sept 252017 Sept 29

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea grant funded by MSIP, a Korea University Grant, Grant-in-Aid for Scientific Research on Innovative Areas from MEXT, and a Grant-in-Aid for Scientific Research(A) from JSPS.

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