Observation of structure in the J/[psi]-pair mass spectrum

Using proton-proton collision data at centre-of-mass energies of s=7,8 and 13TeV recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 9fb-1, the invariant mass spectrum of J/ψ pairs is studied. A narrow structure around 6.9GeV/c2 matching the lin...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Dziewiecki, Michal (Author) , Frau, Giulia (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kecke, Matthieu (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Meinert, Nis (Author) , Neubert, Sebastian (Author) , Piucci, Alessio (Author) , Schmelling, Michael (Author) , Sarpis, Mindaugas (Author) , Skidmore, Nicola (Author) , Stemmle, Simon (Author) , Unverzagt, Daniel Joachim (Author) , Viemann, Harald (Author) , Uwer, Ulrich (Author) , Waldi, Roland (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 29 August 2020
In: Science bulletin
Year: 2020, Volume: 65, Issue: 23, Pages: 1983-1993
ISSN:2095-9281
DOI:10.1016/j.scib.2020.08.032
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.scib.2020.08.032
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S2095927320305685
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Author Notes:LHCb collaboration: Roel Aaij, Flavio Archilli, Sebastian Bachmann, Daniel Berninghoff, Martino Borsato, MichalDziewiecki, Giulia Frau, David Gerick, Jascha Grabowski, Paul André Günther, Xiaoxue Han, Stephanie Hansmann-Menzemer, Jiangqiao Hu, Matthieu Kecke, Renata Kopecná, Blake Leverington, Peilian Li, Hanna Malygina, Jörg Marks, Nis Meinert, Sebastian Neubert, Alessio Piucci, Michael Schmelling, Mindaugas Sarpis, Nicola Skidmore, Simon Stemmle, Daniel Joachim Unverzagt, Harald Viemann, Ulrich Uwer, Roland Waldi, Chishuai Wang, Lukas Witola, Alexey Zhelezov und weitere 939
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Model-independent observation of exotic contributions to B0→J/[psi] K+ π− decays by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Braun, Svende (Author) , Comerma-Montells, Albert (Author) , D'Argent, Philippe (Author) , Dziewiecki, Michal (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kecke, Matthieu (Author) , Kolpin, Michael (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Piucci, Alessio (Author) , Skidmore, Nicola (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author) ,


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Observation of B0(s)→J=[psi]pp̄ decays and precision measurements of the B0(s) masses by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Braun, Svende (Author) , Comerma-Montells, Albert (Author) , D'Argent, Philippe (Author) , Dziewiecki, Michal (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kecke, Matthieu (Author) , Kolpin, Michael (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Piucci, Alessio (Author) , Schmelling, Michael (Author) , Skidmore, Nicola (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the B± production asymmetry and the CP asymmetry in B±→J/[psi]K± decays by Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Schiller, Manuel (Author) , Seyfert, Paul (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Waldi, Roland (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the J/[psi] pair production cross-section in pp collisions at √s=13 TeV by Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Schiller, Manuel (Author) , Stemmle, Simon (Author) , Vesterinen, Mika (Author) , Uwer, Ulrich (Author) , Waldi, Roland (Author) , Zhelezov, Alexey (Author) , Stahl, Marian (Author) ,


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Observation of B+c→J/[psi]D(*)K(*) decays by Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Schiller, Manuel (Author) , Seyfert, Paul (Author) , Stemmle, Simon (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Waldi, Roland (Author) , Zhelezov, Alexey (Author) , Stahl, Marian (Author) ,


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Study of J/[psi] production in jets by Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the ratio of branching fractions B(B+c→J/[psi]K+)/B(B+c→J/[psi]π+) by Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kecke, Matthieu (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Zhelezov, Alexey (Author) ,


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Evidence for the decay B+c -> J/[psi]3π+2π- by Aaij, Roel (Author) , Aquines Gutiérrez, Osvaldo (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Dordei, Francesca (Author) , Esen, Sevda (Author) , Färber, Christian (Author) , Fontana, Marianna (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Schmelling, Michael (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Voß, Christian (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the resonant and CP components in B[bar]0→J/[psi]π+π- decays by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Dordei, Francesca (Author) , Esen, Sevda (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Observation of the B0s  → J/[psi]K0SK+-π-+ decay by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Dordei, Francesca (Author) , Esen, Sevda (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Observation of ¯B0(s)→J/ψ f1(1285) decays and measurement of the f1(1285) mixing angle by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Di Canto, Angelo (Author) , Dordei, Francesca (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Analysis of the resonant components in B̄0s→J/[psi]π+π− by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Tobias (Author) , Holubyev, Kostya (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Krokovny, Pavel (Author) , Langenbruch, Christoph (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Measurement of relative branching fractions of B decays to [psi](2S) and J/[psi] mesons by Aaij, Roel (Author) , Adametz, Aleksandra (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Tobias (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Voß, Christian (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the B̄0s effective lifetime in the J/[​psi​] f0(980) final by Aaij, Roel (Author) , Adametz, Aleksandra (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Voß, Christian (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the B0s→J/[psi] K̄[ast]0 branching fraction and angular amplitudes by Aaij, Roel (Author) , Adametz, Aleksandra (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Voß, Christian (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Measurement of the B0s→J/[psi] K0S branching fraction* by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Tobias (Author) , Holubyev, Kostya (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Krokovny, Pavel (Author) , Langenbruch, Christoph (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Measurements of the branching fractions and CP asymmetries of B±→J/[psi]π± and B±→[psi](2S)π± decays by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Tobias (Author) , Holubyev, Kostya (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Krokovny, Pavel (Author) , Langenbruch, Christoph (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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Observation of B̄0s → J/[psi]f′2(1525) in J/[psi]K+K- final states by Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Dordei, Francesca (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Hansmann-Menzemer, Stephanie (Author) , Hartmann, Tobias (Author) , Holubyev, Kostya (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Krokovny, Pavel (Author) , Langenbruch, Christoph (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author) ,


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