First observation of an attractive interaction between a proton and a cascade baryon
dc.date.accessioned | 2020-05-01T18:04:40Z | |
dc.date.available | 2020-05-01T18:04:40Z | |
dc.date.created | 2019-10-30T12:35:23Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Acharya, Shreyasi Adamová, Dagmar Adhya, Souvik Priyam Adler, Alexander Adolfsson, Jonatan Aggarwal, Madan M. Aglieri Rinella, Gianluca Agnello, Michelangelo Agrawal, Neelima Ahammed, Zubayer Alme, Johan Altenkaemper, Lucas Djuvsland, Øystein Ersdal, Magnus Rentsch Fionda, Fiorella Maria Celeste Grøttvik, Ola Slettevoll Lofnes, Ingrid Mckibben Nystrand, Joakim Rehman, Attiq ur Røhrich, Dieter Tambave, Ganesh Jagannath Ullaland, Kjetil Wagner, Boris Yang, Shiming Yuan, Shiming Zhou, Zhuo Arsene, Ionut Cristian Bätzing, Paul Christoph Dordic, Olja Lardeux, Antoine Xavier Lindal, Svein Mahmood, Sohail Musa Malik, Qasim Waheed Richter, Matthias Røed, Ketil Skaali, Toralf Bernhard Tveter, Trine Spedstad Wikne, Jon Christopher Zhao, Chengxin Helstrup, Håvard Hetland, Kristin Fanebust Kileng, Bjarte Nesbø, Simon Voigt Storetvedt, Maksim Melnik Langøy, Rune Lien, Jørgen André Ahmad, Shafiq F. Ahn, Sang Un Aiola, Salvatore Akindinov, Alexander ALICE, Collaboration . First observation of an attractive interaction between a proton and a cascade baryon. Physical Review Letters. 2019, 123:112002(11), 1-13 | |
dc.identifier.uri | http://hdl.handle.net/10852/75017 | |
dc.description.abstract | This Letter presents the first experimental observation of the attractive strong interaction between a proton and a multistrange baryon (hyperon) Ξ−. The result is extracted from two-particle correlations of combined p−Ξ−⊕¯p−¯Ξ+ pairs measured in p−Pb collisions at √sNN=5.02 TeV at the LHC with ALICE. The measured correlation function is compared with the prediction obtained assuming only an attractive Coulomb interaction and a standard deviation in the range [3.6, 5.3] is found. Since the measured p−Ξ−⊕¯p−¯Ξ+ correlation is significantly enhanced with respect to the Coulomb prediction, the presence of an additional, strong, attractive interaction is evident. The data are compatible with recent lattice calculations by the HAL-QCD Collaboration, with a standard deviation in the range [1.8, 3.7]. The lattice potential predicts a shallow repulsive Ξ− interaction within pure neutron matter and this implies stiffer equations of state for neutron-rich matter including hyperons. Implications of the strong interaction for the modeling of neutron stars are discussed. | |
dc.language | EN | |
dc.publisher | American Physical Society | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | First observation of an attractive interaction between a proton and a cascade baryon | |
dc.type | Journal article | |
dc.creator.author | Acharya, Shreyasi | |
dc.creator.author | Adamová, Dagmar | |
dc.creator.author | Adhya, Souvik Priyam | |
dc.creator.author | Adler, Alexander | |
dc.creator.author | Adolfsson, Jonatan | |
dc.creator.author | Aggarwal, Madan M. | |
dc.creator.author | Aglieri Rinella, Gianluca | |
dc.creator.author | Agnello, Michelangelo | |
dc.creator.author | Agrawal, Neelima | |
dc.creator.author | Ahammed, Zubayer | |
dc.creator.author | Alme, Johan | |
dc.creator.author | Altenkaemper, Lucas | |
dc.creator.author | Djuvsland, Øystein | |
dc.creator.author | Ersdal, Magnus Rentsch | |
dc.creator.author | Fionda, Fiorella Maria Celeste | |
dc.creator.author | Grøttvik, Ola Slettevoll | |
dc.creator.author | Lofnes, Ingrid Mckibben | |
dc.creator.author | Nystrand, Joakim | |
dc.creator.author | Rehman, Attiq ur | |
dc.creator.author | Røhrich, Dieter | |
dc.creator.author | Tambave, Ganesh Jagannath | |
dc.creator.author | Ullaland, Kjetil | |
dc.creator.author | Wagner, Boris | |
dc.creator.author | Yang, Shiming | |
dc.creator.author | Yuan, Shiming | |
dc.creator.author | Zhou, Zhuo | |
dc.creator.author | Arsene, Ionut Cristian | |
dc.creator.author | Bätzing, Paul Christoph | |
dc.creator.author | Dordic, Olja | |
dc.creator.author | Lardeux, Antoine Xavier | |
dc.creator.author | Lindal, Svein | |
dc.creator.author | Mahmood, Sohail Musa | |
dc.creator.author | Malik, Qasim Waheed | |
dc.creator.author | Richter, Matthias | |
dc.creator.author | Røed, Ketil | |
dc.creator.author | Skaali, Toralf Bernhard | |
dc.creator.author | Tveter, Trine Spedstad | |
dc.creator.author | Wikne, Jon Christopher | |
dc.creator.author | Zhao, Chengxin | |
dc.creator.author | Helstrup, Håvard | |
dc.creator.author | Hetland, Kristin Fanebust | |
dc.creator.author | Kileng, Bjarte | |
dc.creator.author | Nesbø, Simon Voigt | |
dc.creator.author | Storetvedt, Maksim Melnik | |
dc.creator.author | Langøy, Rune | |
dc.creator.author | Lien, Jørgen André | |
dc.creator.author | Ahmad, Shafiq F. | |
dc.creator.author | Ahn, Sang Un | |
dc.creator.author | Aiola, Salvatore | |
dc.creator.author | Akindinov, Alexander | |
dc.creator.author | ALICE, Collaboration | |
cristin.unitcode | 185,15,4,60 | |
cristin.unitname | Høyenergifysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 1742225 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical Review Letters&rft.volume=123:112002&rft.spage=1&rft.date=2019 | |
dc.identifier.jtitle | Physical Review Letters | |
dc.identifier.volume | 123 | |
dc.identifier.issue | 11 | |
dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.123.112002 | |
dc.identifier.urn | URN:NBN:no-78125 | |
dc.subject.nvi | VDP::Kjerne- og elementærpartikkelfysikk: 431 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0031-9007 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/75017/2/PhysRevLett.123.112002.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 112002 | |
dc.relation.project | NFR/255188 |
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