Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK-p decays

Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, in Λ0b→J/ψK−p decays are presented. The data sample corresponds to an integrated luminosity of 3 fb−1 acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis of the...

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Hauptverfasser:	Aaij, Roel (VerfasserIn) , Aquines Gutiérrez, Osvaldo (VerfasserIn) , D'Argent, Philippe (VerfasserIn) , Bachmann, Sebastian (VerfasserIn) , Bien, Alexander (VerfasserIn) , Blouw, Johan (VerfasserIn) , Braun, Svende (VerfasserIn) , Britsch, Markward (VerfasserIn) , Comerma-Montells, Albert (VerfasserIn) , De Cian, Michel (VerfasserIn) , Dordei, Francesca (VerfasserIn) , Esen, Sevda (VerfasserIn) , Gerick, David (VerfasserIn) , Gersabeck, Evelina (VerfasserIn) , Grillo, Lucia (VerfasserIn) , Grünberg, Oliver (VerfasserIn) , Han, Xiaoxue (VerfasserIn) , Hansmann-Menzemer, Stephanie (VerfasserIn) , Jäger, Andreas (VerfasserIn) , Kecke, Matthieu (VerfasserIn) , Kolpin, Michael (VerfasserIn) , Kreplin, Katharina (VerfasserIn) , Krocker, Georg Alexander (VerfasserIn) , Leverington, Blake (VerfasserIn) , Marks, Jörg (VerfasserIn) , Meißner, Marco (VerfasserIn) , Mitzel, Dominik (VerfasserIn) , Neubert, Sebastian (VerfasserIn) , Neuner, Max (VerfasserIn) , Nikodem, Thomas (VerfasserIn) , Piucci, Alessio (VerfasserIn) , Schmelling, Michael (VerfasserIn) , Stahl, Marian (VerfasserIn) , Uwer, Ulrich (VerfasserIn) , Vesterinen, Mika (VerfasserIn) , Wandernoth, Sebastian (VerfasserIn) , Zhelezov, Alexey (VerfasserIn)
Körperschaft:	LHCb Collaboration (VerfasserIn)
Dokumenttyp:	Article (Journal)
Sprache:	Englisch
Veröffentlicht:	12 August 2015
In:	Physical review letters Year: 2015, Jahrgang: 115, Heft: 7, Pages: 1-15
ISSN:	1079-7114
DOI:	10.1103/PhysRevLett.115.072001
Online-Zugang:	Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.115.072001 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.115.072001
Verfasserangaben:	R. Aaij et al.* (LHCb Collaboration)

MARC


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245	1	0	\|a Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK-p decays \|c R. Aaij et al.* (LHCb Collaboration)
246	3	3	\|a Observation of J / psi p resonances consistent with pentaquark states in lambda 0 b→J / psi K - p decays
264		1	\|c 12 August 2015
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500			\|a LHCb Collaboration: R. Aaij, B. Adeva, M. Adinolfi, O. Aquines Gutierrez, P. d'Argent, S. Bachmann, A. Bien, J. Blouw, S. Braun, M. Britsch, A. Comerma-Montells, M. De Cian, F. Dordei, S. Esen, D. Gerick, E. Gersabeck, L. Grillo, O. Grünberg, X. Han, S. Hansmann-Menzemer, A. Jaeger, M. Kecke, M. Kolpin, K. Kreplin, G. Krocker, B. Leverington, J. Marks, M. Meissner, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, M. Schmelling, M. Stahl, U. Uwer, M. Vesterinen, S. Wandernoth, A. Zhelezov [und 686 weitere]
500			\|a Gesehen am 06.07.2021
520			\|a Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, in Λ0b→J/ψK−p decays are presented. The data sample corresponds to an integrated luminosity of 3 fb−1 acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis of the three-body final state reproduces the two-body mass and angular distributions. To obtain a satisfactory fit of the structures seen in the J/ψp mass spectrum, it is necessary to include two Breit-Wigner amplitudes that each describe a resonant state. The significance of each of these resonances is more than 9 standard deviations. One has a mass of 4380±8±29 MeV and a width of 205±18±86 MeV, while the second is narrower, with a mass of 4449.8±1.7±2.5 MeV and a width of 39±5±19 MeV. The preferred JP assignments are of opposite parity, with one state having spin 3/2 and the other 5/2.
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773	0	8	\|i Enthalten in \|t Physical review letters \|d College Park, Md. : APS, 1958 \|g 115(2015), 7, Artikel-ID 072001, Seite 1-15 \|h Online-Ressource \|w (DE-627)268756899 \|w (DE-600)1472655-5 \|w (DE-576)077609441 \|x 1079-7114 \|7 nnas \|a Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK-p decays
773	1	8	\|g volume:115 \|g year:2015 \|g number:7 \|g elocationid:072001 \|g pages:1-15 \|g extent:15 \|a Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK-p decays
776	0	8	\|i Erscheint auch als \|n Druck-Ausgabe \|a LHCb Collaboration \|t Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK-p decays \|d 2015 \|w (DE-627)834227479 \|w (DE-576)9834227477
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Aaij et al.* (LHCb Collaboration)"]},"person":[{"given":"Roel","display":"Aaij, Roel","role":"aut","family":"Aaij"},{"given":"Osvaldo","display":"Aquines Gutiérrez, Osvaldo","family":"Aquines Gutiérrez","role":"aut"},{"given":"Philippe","display":"D'Argent, Philippe","role":"aut","family":"D'Argent"},{"role":"aut","family":"Bachmann","given":"Sebastian","display":"Bachmann, Sebastian"},{"role":"aut","family":"Bien","given":"Alexander","display":"Bien, Alexander"},{"role":"aut","family":"Blouw","given":"Johan","display":"Blouw, Johan"},{"family":"Braun","role":"aut","given":"Svende","display":"Braun, Svende"},{"display":"Britsch, Markward","given":"Markward","family":"Britsch","role":"aut"},{"role":"aut","family":"Comerma-Montells","given":"Albert","display":"Comerma-Montells, Albert"},{"family":"De Cian","role":"aut","given":"Michel","display":"De Cian, Michel"},{"display":"Dordei, Francesca","given":"Francesca","family":"Dordei","role":"aut"},{"family":"Esen","role":"aut","display":"Esen, Sevda","given":"Sevda"},{"role":"aut","family":"Gerick","given":"David","display":"Gerick, David"},{"role":"aut","family":"Gersabeck","display":"Gersabeck, Evelina","given":"Evelina"},{"role":"aut","family":"Grillo","given":"Lucia","display":"Grillo, Lucia"},{"given":"Oliver","display":"Grünberg, Oliver","role":"aut","family":"Grünberg"},{"family":"Han","role":"aut","display":"Han, Xiaoxue","given":"Xiaoxue"},{"family":"Hansmann-Menzemer","role":"aut","display":"Hansmann-Menzemer, Stephanie","given":"Stephanie"},{"display":"Jäger, Andreas","given":"Andreas","family":"Jäger","role":"aut"},{"role":"aut","family":"Kecke","given":"Matthieu","display":"Kecke, Matthieu"},{"role":"aut","family":"Kolpin","display":"Kolpin, Michael","given":"Michael"},{"family":"Kreplin","role":"aut","display":"Kreplin, Katharina","given":"Katharina"},{"display":"Krocker, Georg Alexander","given":"Georg Alexander","role":"aut","family":"Krocker"},{"display":"Leverington, Blake","given":"Blake","family":"Leverington","role":"aut"},{"display":"Marks, Jörg","given":"Jörg","family":"Marks","role":"aut"},{"display":"Meißner, Marco","given":"Marco","family":"Meißner","role":"aut"},{"family":"Mitzel","role":"aut","given":"Dominik","display":"Mitzel, Dominik"},{"given":"Sebastian","display":"Neubert, Sebastian","role":"aut","family":"Neubert"},{"display":"Neuner, Max","given":"Max","family":"Neuner","role":"aut"},{"display":"Nikodem, Thomas","given":"Thomas","role":"aut","family":"Nikodem"},{"family":"Piucci","role":"aut","display":"Piucci, Alessio","given":"Alessio"},{"display":"Schmelling, Michael","given":"Michael","family":"Schmelling","role":"aut"},{"given":"Marian","display":"Stahl, Marian","role":"aut","family":"Stahl"},{"display":"Uwer, Ulrich","given":"Ulrich","role":"aut","family":"Uwer"},{"family":"Vesterinen","role":"aut","given":"Mika","display":"Vesterinen, Mika"},{"role":"aut","family":"Wandernoth","display":"Wandernoth, Sebastian","given":"Sebastian"},{"family":"Zhelezov","role":"aut","display":"Zhelezov, Alexey","given":"Alexey"}],"recId":"1761990977","type":{"bibl":"article-journal","media":"Online-Ressource"},"corporate":[{"display":"LHCb Collaboration","role":"aut"}],"titleAlt":[{"title":"Observation of J / psi p resonances consistent with pentaquark states in lambda 0 b→J / psi K - p decays"}],"language":["eng"],"note":["Im Titel ist \"0\" hochgestellt, \"b\" ist tiefgestellt, \"b\" steht unter \"0\"","Im Titel ist \"-\" hochgestellt","LHCb Collaboration: R. Aaij, B. Adeva, M. Adinolfi, O. Aquines Gutierrez, P. d'Argent, S. Bachmann, A. Bien, J. Blouw, S. Braun, M. Britsch, A. Comerma-Montells, M. De Cian, F. Dordei, S. Esen, D. Gerick, E. Gersabeck, L. Grillo, O. Grünberg, X. Han, S. Hansmann-Menzemer, A. Jaeger, M. Kecke, M. Kolpin, K. Kreplin, G. Krocker, B. Leverington, J. Marks, M. Meissner, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, M. Schmelling, M. Stahl, U. Uwer, M. Vesterinen, S. Wandernoth, A. Zhelezov [und 686 weitere]","Gesehen am 06.07.2021"]}
SRT			\|a LHCBCOLLABOBSERVATIO1220

Observation of J/ψp resonances consistent with pentaquark states in Λ0b→J/ψK-p decays

MARC

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