Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction
We present a new measurement of the Λ4H hypernuclear lifetime using in-flight K− + 4He → Λ4H + π0 reaction at the J-PARC hadron facility. We demonstrate, for the first time, the effective selection of the hypernuclear bound state using only the γ-ray energy decayed from π0. This opens the possibilit...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323004628 |
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| author | T. Akaishi H. Asano X. Chen A. Clozza C. Curceanu R. Del Grande C. Guaraldo C. Han T. Hashimoto M. Iliescu K. Inoue S. Ishimoto K. Itahashi M. Iwasaki Y. Ma M. Miliucci R. Murayama H. Noumi H. Ohnishi S. Okada H. Outa K. Piscicchia A. Sakaguchi F. Sakuma M. Sato A. Scordo K. Shirotori D. Sirghi F. Sirghi S. Suzuki K. Tanida T. Toda M. Tokuda T. Yamaga X. Yuan P. Zhang Y. Zhang H. Zhang |
| author_facet | T. Akaishi H. Asano X. Chen A. Clozza C. Curceanu R. Del Grande C. Guaraldo C. Han T. Hashimoto M. Iliescu K. Inoue S. Ishimoto K. Itahashi M. Iwasaki Y. Ma M. Miliucci R. Murayama H. Noumi H. Ohnishi S. Okada H. Outa K. Piscicchia A. Sakaguchi F. Sakuma M. Sato A. Scordo K. Shirotori D. Sirghi F. Sirghi S. Suzuki K. Tanida T. Toda M. Tokuda T. Yamaga X. Yuan P. Zhang Y. Zhang H. Zhang |
| author_sort | T. Akaishi |
| collection | DOAJ |
| description | We present a new measurement of the Λ4H hypernuclear lifetime using in-flight K− + 4He → Λ4H + π0 reaction at the J-PARC hadron facility. We demonstrate, for the first time, the effective selection of the hypernuclear bound state using only the γ-ray energy decayed from π0. This opens the possibility for a systematic study of isospin partner hypernuclei through comparison with data from (K−, π−) reaction. As the first application of this method, our result for the Λ4H lifetime, τ(HΛ4)=206±8(stat.)±12(syst.)ps, is one of the most precise measurements to date. We are also preparing to measure the lifetime of the hypertriton (Λ3H) using the same setup in the near future. |
| first_indexed | 2024-03-11T22:31:57Z |
| format | Article |
| id | doaj.art-82c2963592fc4f48ad076d4b02b1123c |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-03-11T22:31:57Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-82c2963592fc4f48ad076d4b02b1123c2023-09-23T05:10:23ZengElsevierPhysics Letters B0370-26932023-10-01845138128Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reactionT. Akaishi0H. Asano1X. Chen2A. Clozza3C. Curceanu4R. Del Grande5C. Guaraldo6C. Han7T. Hashimoto8M. Iliescu9K. Inoue10S. Ishimoto11K. Itahashi12M. Iwasaki13Y. Ma14M. Miliucci15R. Murayama16H. Noumi17H. Ohnishi18S. Okada19H. Outa20K. Piscicchia21A. Sakaguchi22F. Sakuma23M. Sato24A. Scordo25K. Shirotori26D. Sirghi27F. Sirghi28S. Suzuki29K. Tanida30T. Toda31M. Tokuda32T. Yamaga33X. Yuan34P. Zhang35Y. Zhang36H. Zhang37Osaka University, Osaka, 567-0047, JapanRIKEN, Wako, 351-0198, JapanInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, ChinaLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, ChinaJapan Atomic Energy Agency, Tokai, 319-1195, Japan; Corresponding authors.Laboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyOsaka University, Osaka, 567-0047, JapanHigh Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, JapanRIKEN, Wako, 351-0198, JapanRIKEN, Wako, 351-0198, JapanRIKEN, Wako, 351-0198, Japan; Corresponding authors.Laboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyRIKEN, Wako, 351-0198, JapanOsaka University, Osaka, 567-0047, JapanTohoku University, Sendai, 982-0826, JapanChubu University, Kasugai, 487-8501, JapanRIKEN, Wako, 351-0198, JapanLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, Italy; CENTRO FERMI - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, 00184 Rome, ItalyOsaka University, Osaka, 567-0047, JapanRIKEN, Wako, 351-0198, Japan; Corresponding authors.High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, JapanLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, ItalyOsaka University, Osaka, 567-0047, JapanLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, Italy; Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Magurele, RomaniaLaboratori Nazionali di Frascati dell' INFN, I-00044 Frascati, Italy; Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Magurele, RomaniaHigh Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801, JapanJapan Atomic Energy Agency, Tokai, 319-1195, JapanOsaka University, Osaka, 567-0047, JapanOsaka University, Osaka, 567-0047, JapanRIKEN, Wako, 351-0198, JapanInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, ChinaLanzhou University, Lanzhou, 730000, ChinaWe present a new measurement of the Λ4H hypernuclear lifetime using in-flight K− + 4He → Λ4H + π0 reaction at the J-PARC hadron facility. We demonstrate, for the first time, the effective selection of the hypernuclear bound state using only the γ-ray energy decayed from π0. This opens the possibility for a systematic study of isospin partner hypernuclei through comparison with data from (K−, π−) reaction. As the first application of this method, our result for the Λ4H lifetime, τ(HΛ4)=206±8(stat.)±12(syst.)ps, is one of the most precise measurements to date. We are also preparing to measure the lifetime of the hypertriton (Λ3H) using the same setup in the near future.http://www.sciencedirect.com/science/article/pii/S0370269323004628Strangeness exchange reactionπ0 taggingHypernuclear weak decay lifetime |
| spellingShingle | T. Akaishi H. Asano X. Chen A. Clozza C. Curceanu R. Del Grande C. Guaraldo C. Han T. Hashimoto M. Iliescu K. Inoue S. Ishimoto K. Itahashi M. Iwasaki Y. Ma M. Miliucci R. Murayama H. Noumi H. Ohnishi S. Okada H. Outa K. Piscicchia A. Sakaguchi F. Sakuma M. Sato A. Scordo K. Shirotori D. Sirghi F. Sirghi S. Suzuki K. Tanida T. Toda M. Tokuda T. Yamaga X. Yuan P. Zhang Y. Zhang H. Zhang Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction Physics Letters B Strangeness exchange reaction π0 tagging Hypernuclear weak decay lifetime |
| title | Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction |
| title_full | Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction |
| title_fullStr | Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction |
| title_full_unstemmed | Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction |
| title_short | Precise lifetime measurement of Λ4H hypernucleus using in-flight 4He(K−,π0)Λ4H reaction |
| title_sort | precise lifetime measurement of λ4h hypernucleus using in flight 4he k π0 λ4h reaction |
| topic | Strangeness exchange reaction π0 tagging Hypernuclear weak decay lifetime |
| url | http://www.sciencedirect.com/science/article/pii/S0370269323004628 |
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