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Experimental study of the inclusive η-spectrum from proton-antiproton annihilations at rest in liquid hydrogen
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
Institute for Physics, University of Basle.
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum, Manne Siegbahn-laboratoriet.
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum, Manne Siegbahn-laboratoriet.
Vise andre og tillknytning
1989 (engelsk)Inngår i: Zeitschrift für Physik C Particles and Fields, ISSN 0170-9739, E-ISSN 1431-5858, Vol. 42, s. 49-58Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The inclusive η-momentum spectrum from Mathematical expression annihilations at rest in liquid hydrogen was measured at LEAR. Branching ratios were obtained for Mathematical expression, and ηη(8.1±3.1)×10-5. An upper limit for Mathematical expression of 1.8×10-4 at 95% CL was found. The ratio of the branching ratios is BR(ηρvariant)/BR(ηω)=0.51-0.06+0.20. For the ratio of branching ratios into two pseudoscalar mesons, we have BR(ηπ0)/BR(π0π0)=0.65±0.14, BR(ηη)/BR(π0π0), BR(ηη′)/BR(π0π0) at 95% CL, and BR(ηη)/BR(ηπ0). © 1989 Springer-Verlag.

sted, utgiver, år, opplag, sider
1989. Vol. 42, s. 49-58
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URN: urn:nbn:se:su:diva-46060DOI: 10.1007/BF01565127OAI: oai:DiVA.org:su-46060DiVA, id: diva2:371451
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cited By (since 1996) 9Tilgjengelig fra: 2010-11-20 Laget: 2010-11-20 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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