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 3.7×10−33.7×10−3 has been established at the confidence level of 90%.

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

BRADAMANTE, FRANCO;BRESSAN, Andrea;DALLA TORRE, SILVIA;DASGUPTA, SHUDDHA SHANKAR;DUIC, VENICIO;ELIA, CARMINE;LEVORATO, STEFANO;Makke, Nour;MARTIN, ANNA;MATOUSEK, JAN;SBRIZZAI, GIULIO;SCHIAVON, PAOLO;SOZZI, FEDERICA;TAKEKAWA, STEFANO;
2015

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 3.7×10−33.7×10−3 has been established at the confidence level of 90%.
http://www.sciencedirect.com/science/article/pii/S0370269315000520
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2843496
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