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%.
Search for exclusive photoproduction of Zc±(3900) at COMPASS
GNESI I;
2015-01-01
Abstract
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%.File in questo prodotto:
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