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Measurement of the γγ*→[eta]c transition form factor

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We study the reaction e+e−→e+e−ηc, ηc→KSK±π∓ and obtain ηc mass and width values 2982.2±0.4±1.6 MeV/c2 and 31.7±1.2±0.8 MeV, respectively. We find Γ(ηc→γγ)B(ηc→K¯¯¯¯Kπ)=0.374±0.009±0.031 keV, and measure the γγ∗→ηc transition form factor in the momentum transfer range from 2 to 50 GeV2. The analysis...

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Main Authors: Lees, Jean-Pierre (Author) , Adametz, Aleksandra (Author) , Marks, Jörg (Author) , Schenk, Sebastian (Author) , Uwer, Ulrich (Author)
Format: Article (Journal)
Language:English
Published: 30 March 2010
In: Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Volume: 81, Issue: 5, Pages: 1-18
ISSN:1550-2368
DOI:10.1103/PhysRevD.81.052010
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.81.052010
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.81.052010
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Author Notes:J.P. Lees, A. Adametz, J. Marks, S. Schenk, U. Uwer [und 456 weitere Personen]
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Evidence for an [eta] c(1S) π - resonance in B0→[eta] c(1S)K+ π - decays by Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Braun, Svende (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Dziewiecki, Michal (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (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) , Tilburg, Jeroen van (Author) ,


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Measurement of CP asymmetries in D±→[eta]'π± and D±s→[eta]'π± decays 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) , Kolpin, Michael (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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Search for the CP-violating strong decays [eta]→π+π− and [eta]′(958)→π+π− 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) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author) ,


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Dalitz plot analysis of [eta] c → K+K- [eta] and [eta] c → K+K-π0 in two-photon interactions by Lees, Jean-Pierre (Author) , Adametz, Aleksandra (Author) , Uwer, Ulrich (Author) ,


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