Search for exclusive photoproduction of Zc± (3900) at COMPASS

C. Adolph (Universität Erlangen–Nürnberg, Physikalisches Institut, Erlangen, 91054, Germany) ; R. Akhunzyanov (Joint Institute for Nuclear Research, Dubna, Moscow Region, 141980, Russia) ; M.G. Alexeev (University of Turin, Department of Physics, Turin, 10125, Italy) ; G.D. Alexeev (Joint Institute for Nuclear Research, Dubna, Moscow Region, 141980, Russia) ; A. Amoroso (University of Turin, Department of Physics, Turin, 10125, Italy; Torino Section of INFN, Turin, 10125, Italy) ; et al. - Show all 209 authors

A search for the exclusive production of the Zc±(3900) hadron by virtual photons has been performed in the channel Zc±(3900)→J/ψπ± . The data cover the range from 7 GeV to 19 GeV in the centre-of-mass energy of the photon–nucleon system. The full set of the COMPASS data set collected with a muon beam between 2002 and 2011 has been used. An upper limit for the ratio BR(Zc±(3900)→J/ψπ±)×σγN→Zc±(3900)N/σγN→J/ψN of 3.7×10−3 has been established at the confidence level of 90%.

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      "source": "Elsevier", 
      "title": "Search for exclusive photoproduction of Zc\u00b1 (3900) at COMPASS"
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      "source": "Elsevier", 
      "value": "A search for the exclusive production of the Zc\u00b1(3900) hadron by virtual photons has been performed in the channel Zc\u00b1(3900)\u2192J/\u03c8\u03c0\u00b1 . The data cover the range from 7 GeV to 19 GeV in the centre-of-mass energy of the photon\u2013nucleon system. The full set of the COMPASS data set collected with a muon beam between 2002 and 2011 has been used. An upper limit for the ratio BR(Zc\u00b1(3900)\u2192J/\u03c8\u03c0\u00b1)\u00d7\u03c3\u03b3N\u2192Zc\u00b1(3900)N/\u03c3\u03b3N\u2192J/\u03c8N of 3.7\u00d710\u22123 has been established at the confidence level of 90%."
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Published on:
30 January 2015
Publisher:
Elsevier
Published in:
Physics Letters B (2015)

DOI:
https://doi.org/10.1016/j.physletb.2015.01.042
Copyrights:
The Authors
Licence:
CC-BY-3.0

Fulltext files: