Knapp, B.
;
Lee, Won-Yong
;
Leung, P.
;
et al.
Phys.Rev.Lett. 34 (1975) 1040, 1975.
https://inspirehep.net/literature/2411
Inspire Record
2411
DOI
10.17182/hepdata.21280
https://doi.org/10.17182/hepdata.21280
A very narrow resonance with a mass of 3.105 GeV/c2 is observed in the reaction γ+Be→μ++μ−+X. The total cross section for this process, as well as its t distribution, is given.