Experimental investigation of ground-state properties of 7H with transfer reactions

The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton...
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Autor*in:	M. Caamaño [verfasserIn] T. Roger [verfasserIn] A.M. Moro [verfasserIn] G.F. Grinyer [verfasserIn] J. Pancin [verfasserIn] S. Bagchi [verfasserIn] S. Sambi [verfasserIn] J. Gibelin [verfasserIn] B. Fernández–Domínguez [verfasserIn] N. Itagaki [verfasserIn] J. Benlliure [verfasserIn] D. Cortina–Gil [verfasserIn] F. Farget [verfasserIn] B. Jacquot [verfasserIn] D. Pérez–Loureiro [verfasserIn] B. Pietras [verfasserIn] R. Raabe [verfasserIn] D. Ramos [verfasserIn] C. Rodríguez Tajes [verfasserIn] H. Savajols [verfasserIn] M. Vandebrouck [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	7H Hydrogen resonance Active target

Übergeordnetes Werk:	In: Physics Letters B - Elsevier, 2015, 829(2022), Seite 137067-
Übergeordnetes Werk:	volume:829 ; year:2022 ; pages:137067-

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.physletb.2022.137067

Katalog-ID:	DOAJ041951395

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allfields	10.1016/j.physletb.2022.137067 doi (DE-627)DOAJ041951395 (DE-599)DOAJf4a3a39557c4451fa2bd06836ab1ae0b DE-627 ger DE-627 rakwb eng QC1-999 M. Caamaño verfasserin aut Experimental investigation of ground-state properties of 7H with transfer reactions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory. 7H Hydrogen resonance Active target Physics T. Roger verfasserin aut A.M. Moro verfasserin aut G.F. Grinyer verfasserin aut J. Pancin verfasserin aut S. Bagchi verfasserin aut S. Sambi verfasserin aut J. Gibelin verfasserin aut B. Fernández–Domínguez verfasserin aut N. Itagaki verfasserin aut J. Benlliure verfasserin aut D. Cortina–Gil verfasserin aut F. Farget verfasserin aut B. Jacquot verfasserin aut D. Pérez–Loureiro verfasserin aut B. Pietras verfasserin aut R. Raabe verfasserin aut D. Ramos verfasserin aut C. Rodríguez Tajes verfasserin aut H. Savajols verfasserin aut M. Vandebrouck verfasserin aut In Physics Letters B Elsevier, 2015 829(2022), Seite 137067- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:829 year:2022 pages:137067- https://doi.org/10.1016/j.physletb.2022.137067 kostenfrei https://doaj.org/article/f4a3a39557c4451fa2bd06836ab1ae0b kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322002015 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 829 2022 137067-
spelling	10.1016/j.physletb.2022.137067 doi (DE-627)DOAJ041951395 (DE-599)DOAJf4a3a39557c4451fa2bd06836ab1ae0b DE-627 ger DE-627 rakwb eng QC1-999 M. Caamaño verfasserin aut Experimental investigation of ground-state properties of 7H with transfer reactions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory. 7H Hydrogen resonance Active target Physics T. Roger verfasserin aut A.M. Moro verfasserin aut G.F. Grinyer verfasserin aut J. Pancin verfasserin aut S. Bagchi verfasserin aut S. Sambi verfasserin aut J. Gibelin verfasserin aut B. Fernández–Domínguez verfasserin aut N. Itagaki verfasserin aut J. Benlliure verfasserin aut D. Cortina–Gil verfasserin aut F. Farget verfasserin aut B. Jacquot verfasserin aut D. Pérez–Loureiro verfasserin aut B. Pietras verfasserin aut R. Raabe verfasserin aut D. Ramos verfasserin aut C. Rodríguez Tajes verfasserin aut H. Savajols verfasserin aut M. Vandebrouck verfasserin aut In Physics Letters B Elsevier, 2015 829(2022), Seite 137067- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:829 year:2022 pages:137067- https://doi.org/10.1016/j.physletb.2022.137067 kostenfrei https://doaj.org/article/f4a3a39557c4451fa2bd06836ab1ae0b kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322002015 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 829 2022 137067-
allfields_unstemmed	10.1016/j.physletb.2022.137067 doi (DE-627)DOAJ041951395 (DE-599)DOAJf4a3a39557c4451fa2bd06836ab1ae0b DE-627 ger DE-627 rakwb eng QC1-999 M. Caamaño verfasserin aut Experimental investigation of ground-state properties of 7H with transfer reactions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory. 7H Hydrogen resonance Active target Physics T. Roger verfasserin aut A.M. Moro verfasserin aut G.F. Grinyer verfasserin aut J. Pancin verfasserin aut S. Bagchi verfasserin aut S. Sambi verfasserin aut J. Gibelin verfasserin aut B. Fernández–Domínguez verfasserin aut N. Itagaki verfasserin aut J. Benlliure verfasserin aut D. Cortina–Gil verfasserin aut F. Farget verfasserin aut B. Jacquot verfasserin aut D. Pérez–Loureiro verfasserin aut B. Pietras verfasserin aut R. Raabe verfasserin aut D. Ramos verfasserin aut C. Rodríguez Tajes verfasserin aut H. Savajols verfasserin aut M. Vandebrouck verfasserin aut In Physics Letters B Elsevier, 2015 829(2022), Seite 137067- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:829 year:2022 pages:137067- https://doi.org/10.1016/j.physletb.2022.137067 kostenfrei https://doaj.org/article/f4a3a39557c4451fa2bd06836ab1ae0b kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322002015 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 829 2022 137067-
allfieldsGer	10.1016/j.physletb.2022.137067 doi (DE-627)DOAJ041951395 (DE-599)DOAJf4a3a39557c4451fa2bd06836ab1ae0b DE-627 ger DE-627 rakwb eng QC1-999 M. Caamaño verfasserin aut Experimental investigation of ground-state properties of 7H with transfer reactions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory. 7H Hydrogen resonance Active target Physics T. Roger verfasserin aut A.M. Moro verfasserin aut G.F. Grinyer verfasserin aut J. Pancin verfasserin aut S. Bagchi verfasserin aut S. Sambi verfasserin aut J. Gibelin verfasserin aut B. Fernández–Domínguez verfasserin aut N. Itagaki verfasserin aut J. Benlliure verfasserin aut D. Cortina–Gil verfasserin aut F. Farget verfasserin aut B. Jacquot verfasserin aut D. Pérez–Loureiro verfasserin aut B. Pietras verfasserin aut R. Raabe verfasserin aut D. Ramos verfasserin aut C. Rodríguez Tajes verfasserin aut H. Savajols verfasserin aut M. Vandebrouck verfasserin aut In Physics Letters B Elsevier, 2015 829(2022), Seite 137067- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:829 year:2022 pages:137067- https://doi.org/10.1016/j.physletb.2022.137067 kostenfrei https://doaj.org/article/f4a3a39557c4451fa2bd06836ab1ae0b kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322002015 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 829 2022 137067-
allfieldsSound	10.1016/j.physletb.2022.137067 doi (DE-627)DOAJ041951395 (DE-599)DOAJf4a3a39557c4451fa2bd06836ab1ae0b DE-627 ger DE-627 rakwb eng QC1-999 M. Caamaño verfasserin aut Experimental investigation of ground-state properties of 7H with transfer reactions 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory. 7H Hydrogen resonance Active target Physics T. Roger verfasserin aut A.M. Moro verfasserin aut G.F. Grinyer verfasserin aut J. Pancin verfasserin aut S. Bagchi verfasserin aut S. Sambi verfasserin aut J. Gibelin verfasserin aut B. Fernández–Domínguez verfasserin aut N. Itagaki verfasserin aut J. Benlliure verfasserin aut D. Cortina–Gil verfasserin aut F. Farget verfasserin aut B. Jacquot verfasserin aut D. Pérez–Loureiro verfasserin aut B. Pietras verfasserin aut R. Raabe verfasserin aut D. Ramos verfasserin aut C. Rodríguez Tajes verfasserin aut H. Savajols verfasserin aut M. Vandebrouck verfasserin aut In Physics Letters B Elsevier, 2015 829(2022), Seite 137067- (DE-627)266015360 (DE-600)1466612-1 18732445 nnns volume:829 year:2022 pages:137067- https://doi.org/10.1016/j.physletb.2022.137067 kostenfrei https://doaj.org/article/f4a3a39557c4451fa2bd06836ab1ae0b kostenfrei http://www.sciencedirect.com/science/article/pii/S0370269322002015 kostenfrei https://doaj.org/toc/0370-2693 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2014 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2064 GBV_ILN_2111 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 829 2022 137067-
language	English
source	In Physics Letters B 829(2022), Seite 137067- volume:829 year:2022 pages:137067-
sourceStr	In Physics Letters B 829(2022), Seite 137067- volume:829 year:2022 pages:137067-
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	7H Hydrogen resonance Active target Physics
isfreeaccess_bool	true
container_title	Physics Letters B
authorswithroles_txt_mv	M. Caamaño @@aut@@ T. Roger @@aut@@ A.M. Moro @@aut@@ G.F. Grinyer @@aut@@ J. Pancin @@aut@@ S. Bagchi @@aut@@ S. Sambi @@aut@@ J. Gibelin @@aut@@ B. Fernández–Domínguez @@aut@@ N. Itagaki @@aut@@ J. Benlliure @@aut@@ D. Cortina–Gil @@aut@@ F. Farget @@aut@@ B. Jacquot @@aut@@ D. Pérez–Loureiro @@aut@@ B. Pietras @@aut@@ R. Raabe @@aut@@ D. Ramos @@aut@@ C. Rodríguez Tajes @@aut@@ H. Savajols @@aut@@ M. Vandebrouck @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	266015360
id	DOAJ041951395
language_de	englisch
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author	M. Caamaño
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topic_title	QC1-999 Experimental investigation of ground-state properties of 7H with transfer reactions 7H Hydrogen resonance Active target
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title	Experimental investigation of ground-state properties of 7H with transfer reactions
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title_full	Experimental investigation of ground-state properties of 7H with transfer reactions
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author_browse	M. Caamaño T. Roger A.M. Moro G.F. Grinyer J. Pancin S. Bagchi S. Sambi J. Gibelin B. Fernández–Domínguez N. Itagaki J. Benlliure D. Cortina–Gil F. Farget B. Jacquot D. Pérez–Loureiro B. Pietras R. Raabe D. Ramos C. Rodríguez Tajes H. Savajols M. Vandebrouck
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title_sort	experimental investigation of ground-state properties of 7h with transfer reactions
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title_auth	Experimental investigation of ground-state properties of 7H with transfer reactions
abstract	The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory.
abstractGer	The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory.
abstract_unstemmed	The properties of nuclei with extreme neutron–to–proton ratios, far from those naturally occurring on Earth, are key to understand nuclear forces and how nucleons hold together to form nuclei. 7H, with six neutrons and a single proton, is the nuclear system with the most unbalanced neutron–to–proton ratio known so far. However, its sheer existence and properties are still a challenge for experimental efforts and theoretical models. Here we report experimental evidences on the formation of 7H as a resonance, detected with independent observables, and the first measurement of the structure of its ground state. The resonance is found at ∼0.7 MeV above the 3H+4n mass, with a narrow width of ∼0.2 MeV and a 1/2+ spin and parity. These data are consistent with a 7H as a 3H core surrounded by an extended four-neutron halo, with a unique four-neutron decay and a relatively long half-life thanks to neutron pairing; a prime example of new phenomena occurring in what would be the most pure-neutron nuclear matter we can access in the laboratory.
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title_short	Experimental investigation of ground-state properties of 7H with transfer reactions
url	https://doi.org/10.1016/j.physletb.2022.137067 https://doaj.org/article/f4a3a39557c4451fa2bd06836ab1ae0b http://www.sciencedirect.com/science/article/pii/S0370269322002015 https://doaj.org/toc/0370-2693
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author2Str	T. Roger A.M. Moro G.F. Grinyer J. Pancin S. Bagchi S. Sambi J. Gibelin B. Fernández–Domínguez N. Itagaki J. Benlliure D. Cortina–Gil F. Farget B. Jacquot D. Pérez–Loureiro B. Pietras R. Raabe D. Ramos C. Rodríguez Tajes H. Savajols M. Vandebrouck
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Experimental investigation of ground-state properties of 7H with transfer reactions

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