1997/09/25 by J. Adams, J. R. Adams, A. Alavi-Harati +78 · 2 citations
Physics and Astronomy · #Beam (structure) #Fermilab #Gluino #Gluon #Hadron #High-Energy Particle Collisions Research #Invariant mass #Large Hadron Collider #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quark #astro-ph #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevlett.79.4083
published as Phys.Rev.Lett.79:4083-4087,1997 · Documentstyle aps,epsfig,prl (revtex), 6 pages, 7 figures
arxiv created 1997/09/25 · openalex publication_date 1997/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We searched for the appearance of \ensuremathπ+\ensuremathπ^\ensuremath- pairs with invariant mass \ensuremath≥648MeV/c2 in a neutral beam. Such an observation could signify the decay of a long-lived light neutral particle. We find no evidence for this decay. Our null result severely constrains the existence of an R0 hadron, which is the lightest bound state of a gluon and a light gluino (g\stackrel\ifmmode \else \~\fig), and thereby also the existence of a light gluino. Depending on the photino mass, we exclude the R0 in the mass and lifetime ranges of 1.2--4.6GeV/c2 and 2\ifmmode×\else\texttimes\fi10^\ensuremath-10--7\ifmmode×\else\texttimes\fi10^\ensuremath-4s, respectively.