A thick neutron skin emerges from the first determination of root mean square radii of the proton distributions for $^{17−22}$N from charge changing cross section measurements around 900A MeV at GSI. Neutron halo effects are signalled for $^{22}$N from an increase in the proton and matter radii. The radii suggest an unconventional shell gap at N = 14 arising from the attractive proton–neutron tensor interaction, in good agreement with shell model calculations. Ab initio, in-medium similarity re-normalization group, calculations with a state-of-the-art chiral nucleon–nucleon and three-nucleon interaction reproduce well the data approaching the neutron drip-line isotopes but are challenged in explaining the complete isotopic trend of the radii.
{
"_oai": {
"updated": "2020-04-18T00:51:29Z",
"id": "oai:repo.scoap3.org:45227",
"sets": [
"PLB"
]
},
"authors": [
{
"affiliations": [
{
"country": "Canada",
"value": "Astronomy and Physics Department, Saint Mary's University, Halifax, Canada"
},
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
},
{
"country": "Germany",
"value": "Justus-Liebig University, Giessen, Germany"
}
],
"surname": "Bagchi",
"given_names": "S.",
"full_name": "Bagchi, S."
},
{
"affiliations": [
{
"country": "Canada",
"value": "Astronomy and Physics Department, Saint Mary's University, Halifax, Canada"
},
{
"country": "Canada",
"value": "TRIUMF, Vancouver, Canada"
}
],
"surname": "Kanungo",
"email": "ritu@triumf.ca",
"full_name": "Kanungo, R.",
"given_names": "R."
},
{
"affiliations": [
{
"country": "Japan",
"value": "Department of Physics, Hokkaido University, Sapporo, Japan"
}
],
"surname": "Horiuchi",
"given_names": "W.",
"full_name": "Horiuchi, W."
},
{
"affiliations": [
{
"country": "USA",
"value": "Physics Division, Oak Ridge National Laboratory, Oak Ridge, USA"
},
{
"country": "USA",
"value": "Department of Physics and Astronomy, University of Tennessee, Knoxville, USA"
}
],
"surname": "Hagen",
"given_names": "G.",
"full_name": "Hagen, G."
},
{
"affiliations": [
{
"country": "USA",
"value": "Physics Division, Oak Ridge National Laboratory, Oak Ridge, USA"
},
{
"country": "USA",
"value": "Department of Physics and Astronomy, University of Tennessee, Knoxville, USA"
}
],
"surname": "Morris",
"given_names": "T.D.",
"full_name": "Morris, T.D."
},
{
"affiliations": [
{
"country": "Canada",
"value": "TRIUMF, Vancouver, Canada"
}
],
"surname": "Stroberg",
"given_names": "S.R.",
"full_name": "Stroberg, S.R."
},
{
"affiliations": [
{
"country": "Japan",
"value": "Department of Physics, Nihon University, Tokyo, Japan"
}
],
"surname": "Suzuki",
"given_names": "T.",
"full_name": "Suzuki, T."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Ameil",
"given_names": "F.",
"full_name": "Ameil, F."
},
{
"affiliations": [
{
"country": "Canada",
"value": "Astronomy and Physics Department, Saint Mary's University, Halifax, Canada"
}
],
"surname": "Atkinson",
"given_names": "J.",
"full_name": "Atkinson, J."
},
{
"affiliations": [
{
"country": "Spain",
"value": "Universidad de Santiago de Compostela, Santiago de Compostela, Spain"
}
],
"surname": "Ayyad",
"given_names": "Y.",
"full_name": "Ayyad, Y."
},
{
"affiliations": [
{
"country": "Spain",
"value": "Universidad de Santiago de Compostela, Santiago de Compostela, Spain"
}
],
"surname": "Cortina-Gil",
"given_names": "D.",
"full_name": "Cortina-Gil, D."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Dillmann",
"given_names": "I.",
"full_name": "Dillmann, I."
},
{
"affiliations": [
{
"country": "Canada",
"value": "Astronomy and Physics Department, Saint Mary's University, Halifax, Canada"
},
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Estrad\u00e9",
"given_names": "A.",
"full_name": "Estrad\u00e9, A."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Evdokimov",
"given_names": "A.",
"full_name": "Evdokimov, A."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Farinon",
"given_names": "F.",
"full_name": "Farinon, F."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
},
{
"country": "Germany",
"value": "Justus-Liebig University, Giessen, Germany"
}
],
"surname": "Geissel",
"given_names": "H.",
"full_name": "Geissel, H."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Guastalla",
"given_names": "G.",
"full_name": "Guastalla, G."
},
{
"affiliations": [
{
"country": "Slovakia",
"value": "Faculty of Mathematics and Physics, Comenius University, Bratislava, Slovakia"
}
],
"surname": "Janik",
"given_names": "R.",
"full_name": "Janik, R."
},
{
"affiliations": [
{
"country": "Canada",
"value": "Astronomy and Physics Department, Saint Mary's University, Halifax, Canada"
},
{
"country": "Canada",
"value": "Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Canada"
}
],
"surname": "Kaur",
"given_names": "S.",
"full_name": "Kaur, S."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Kn\u00f6bel",
"given_names": "R.",
"full_name": "Kn\u00f6bel, R."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Kurcewicz",
"given_names": "J.",
"full_name": "Kurcewicz, J."
},
{
"orcid": "0000-0002-7043-4993",
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Litvinov",
"given_names": "Yu.A.",
"full_name": "Litvinov, Yu.A."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Marta",
"given_names": "M.",
"full_name": "Marta, M."
},
{
"affiliations": [
{
"country": "Spain",
"value": "Universidad de Santiago de Compostela, Santiago de Compostela, Spain"
}
],
"surname": "Mostazo",
"given_names": "M.",
"full_name": "Mostazo, M."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Mukha",
"given_names": "I.",
"full_name": "Mukha, I."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Nociforo",
"given_names": "C.",
"full_name": "Nociforo, C."
},
{
"affiliations": [
{
"country": "Japan",
"value": "RCNP, Osaka University, Osaka, Japan"
}
],
"surname": "Ong",
"given_names": "H.J.",
"full_name": "Ong, H.J."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Pietri",
"given_names": "S.",
"full_name": "Pietri, S."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Prochazka",
"given_names": "A.",
"full_name": "Prochazka, A."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
},
{
"country": "Germany",
"value": "Justus-Liebig University, Giessen, Germany"
}
],
"surname": "Scheidenberger",
"given_names": "C.",
"full_name": "Scheidenberger, C."
},
{
"affiliations": [
{
"country": "Slovakia",
"value": "Faculty of Mathematics and Physics, Comenius University, Bratislava, Slovakia"
}
],
"surname": "Sitar",
"given_names": "B.",
"full_name": "Sitar, B."
},
{
"affiliations": [
{
"country": "Slovakia",
"value": "Faculty of Mathematics and Physics, Comenius University, Bratislava, Slovakia"
}
],
"surname": "Strmen",
"given_names": "P.",
"full_name": "Strmen, P."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Takechi",
"given_names": "M.",
"full_name": "Takechi, M."
},
{
"affiliations": [
{
"country": "Japan",
"value": "RCNP, Osaka University, Osaka, Japan"
}
],
"surname": "Tanaka",
"given_names": "J.",
"full_name": "Tanaka, J."
},
{
"affiliations": [
{
"country": "Canada",
"value": "Astronomy and Physics Department, Saint Mary's University, Halifax, Canada"
},
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
},
{
"country": "Germany",
"value": "Justus-Liebig University, Giessen, Germany"
}
],
"surname": "Tanaka",
"given_names": "Y.",
"full_name": "Tanaka, Y."
},
{
"affiliations": [
{
"country": "Japan",
"value": "RCNP, Osaka University, Osaka, Japan"
},
{
"country": "China",
"value": "School of Physics and Nuclear Energy Engineering and IRCNPC, Beihang University, Beijing, China"
}
],
"surname": "Tanihata",
"given_names": "I.",
"full_name": "Tanihata, I."
},
{
"affiliations": [
{
"country": "China",
"value": "School of Physics and Nuclear Energy Engineering and IRCNPC, Beihang University, Beijing, China"
}
],
"surname": "Terashima",
"given_names": "S.",
"full_name": "Terashima, S."
},
{
"affiliations": [
{
"country": "Spain",
"value": "Universidad de Santiago de Compostela, Santiago de Compostela, Spain"
}
],
"surname": "Vargas",
"given_names": "J.",
"full_name": "Vargas, J."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Weick",
"given_names": "H.",
"full_name": "Weick, H."
},
{
"affiliations": [
{
"country": "Germany",
"value": "GSI Helmholtzzentrum f\u00fcr Schwerionenforschung GmbH, Darmstadt, Germany"
}
],
"surname": "Winfield",
"given_names": "J.S.",
"full_name": "Winfield, J.S."
}
],
"titles": [
{
"source": "Elsevier",
"title": "Neutron skin and signature of the = 14 Shell gap Found From Measured Proton Radii of N"
}
],
"dois": [
{
"value": "10.1016/j.physletb.2019.01.024"
}
],
"publication_info": [
{
"page_end": "256",
"journal_title": "Physics Letters B",
"material": "article",
"journal_volume": "790 C",
"artid": "34387",
"year": 2019,
"page_start": "251"
}
],
"$schema": "http://repo.scoap3.org/schemas/hep.json",
"acquisition_source": {
"date": "2020-04-18T02:31:31.816536",
"source": "Elsevier",
"method": "Elsevier",
"submission_number": "bcec9160810b11eaad8602163e01809a"
},
"page_nr": [
6
],
"license": [
{
"url": "http://creativecommons.org/licenses/by/3.0/",
"license": "CC-BY-3.0"
}
],
"copyright": [
{
"holder": "The Authors",
"statement": "The Authors",
"year": "2019"
}
],
"control_number": "45227",
"record_creation_date": "2019-01-29T13:38:51.561150",
"_files": [
{
"checksum": "md5:4e55cb07768860145a228f44851468aa",
"filetype": "xml",
"bucket": "ed2335a4-cf76-4ae9-8055-730e8f1a9979",
"version_id": "59ae4483-35bc-4648-8a31-3d50ff1b2e2d",
"key": "10.1016/j.physletb.2019.01.024.xml",
"size": 132618
},
{
"checksum": "md5:98223c133632fa6cc7b499d2d2bb2b13",
"filetype": "pdf",
"bucket": "ed2335a4-cf76-4ae9-8055-730e8f1a9979",
"version_id": "39efe920-d05b-4701-aee9-50b03c2e63b1",
"key": "10.1016/j.physletb.2019.01.024.pdf",
"size": 573620
},
{
"checksum": "md5:78490c3ffcd45179b2fd5f3870c0bb60",
"filetype": "pdf/a",
"bucket": "ed2335a4-cf76-4ae9-8055-730e8f1a9979",
"version_id": "a0bcc39a-9151-4ea3-a710-f7fc3148e9ae",
"key": "10.1016/j.physletb.2019.01.024_a.pdf",
"size": 912954
}
],
"collections": [
{
"primary": "Physics Letters B"
}
],
"abstracts": [
{
"source": "Elsevier",
"value": "A thick neutron skin emerges from the first determination of root mean square radii of the proton distributions for $^{17\u221222}$N from charge changing cross section measurements around 900A MeV at GSI. Neutron halo effects are signalled for $^{22}$N from an increase in the proton and matter radii. The radii suggest an unconventional shell gap at N = 14 arising from the attractive proton\u2013neutron tensor interaction, in good agreement with shell model calculations. Ab initio, in-medium similarity re-normalization group, calculations with a state-of-the-art chiral nucleon\u2013nucleon and three-nucleon interaction reproduce well the data approaching the neutron drip-line isotopes but are challenged in explaining the complete isotopic trend of the radii."
}
],
"imprints": [
{
"date": "2019-01-21",
"publisher": "Elsevier"
}
]
}