Observation of an Exotic S = +1 Baryon in Exclusive Photoproduction from the Deuteron
Article
Stepanyan, S, Hicks, K, Carman, DS et al. (2003). Observation of an Exotic S = +1 Baryon in Exclusive Photoproduction from the Deuteron
. PHYSICAL REVIEW LETTERS, 91(25), 2520011-2520015.
Stepanyan, S, Hicks, K, Carman, DS et al. (2003). Observation of an Exotic S = +1 Baryon in Exclusive Photoproduction from the Deuteron
. PHYSICAL REVIEW LETTERS, 91(25), 2520011-2520015.
An exotic S = +1 baryon was observed in exclusive photoproduction from the deuteron. The peak was at 1.542±0.005 GeV/c2 with a measured width of 0.021 GeV/c2 FWHM, which is largely determined by experimental mass resolution. Photon beams were produced by 2.474 and 3.115 GeV electrons incident on a bremsstrahlung radiator of thickness 10-4 radiation lengths. The mass and width of the observed peak were found to be consistent with a narrow S = +1 baryon by other experimental groups.