Publications [#249012] of Henry R. Weller

Papers Published
  1. Stepanyan, S; Weller, TCLASCIHR, Observation of an Exotic S=+1 Baryon in Exclusive Photoproduction from the Deuteron, Physical Review Letters, vol. 91 no. 25 (December, 2003), pp. 252001, American Physical Society [Gateway.cgi], [doi] .

    Abstract:
    In an exclusive measurement of the reaction gammad-->K(+)K(-)pn, a narrow peak that can be attributed to an exotic baryon with strangeness S=+1 is seen in the K(+)n invariant mass spectrum. The peak is at 1.542+/-0.005 GeV/c(2) with a measured width of 0.021 GeV/c(2) FWHM, which is largely determined by experimental mass resolution. The statistical significance of the peak is (5.2+/-0.6)sigma. The mass and width of the observed peak are consistent with recent reports of a narrow S=+1 baryon by other experimental groups.

Duke University * Arts & Sciences * Physics * Faculty * Staff * Grad * Researchers * Reload * Login
Copyright (c) 2001-2002 by Duke University Physics.