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%.
Titolo: | Search for exclusive photoproduction of Zc±(3900) at COMPASS | |
Autori: | ||
Data di pubblicazione: | 2015 | |
Rivista: | ||
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%. | |
Handle: | http://hdl.handle.net/11368/2843496 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.physletb.2015.01.042 | |
URL: | http://www.sciencedirect.com/science/article/pii/S0370269315000520 | |
Appare nelle tipologie: | 1.1 Articolo in Rivista |
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