| Article | |
| Title | New analysis of the radiative decay $\omega \to \eta\gamma$ in proton-antiproton annihilation at rest |
| Author(s) |
Case, T ; Crowe, K M ; Heinsius, F H ; Kammel, P ; Lakata, M T ; Degener, T F ; Koch, H ; Kunze, M ; Kurilla, U ; Matthäy, H ; Peters, K ; Ratajczak, M ; Stöck, H ; Barnett, B M ; Herz, M ; Kalinowsky, H ; Klempt, E ; Pick, B ; Strassburger, C ; Suh, J S ; Thoma, U ; Witmack, K ; Hidas, P ; Baker, C A ; Batty, C J ; Doser, Michael ; Kisiel, J ; Landua, Rolf ; Adomeit, J ; Meier, J ; Ouared, R ; Seibert, R ; Strohbusch, U ; Abele, A ; Bischoff, S ; Blüm, H P ; Engelhardt, D ; Herbstrith, A ; Holtzhaussen, C ; Tischhäuser, M ; Bugg, D V ; Hodd, C ; Zou Bing Song ; Haddock, R P ; Braune, K ; Dünnweber, W ; Faessler, M A ; Hessey, N P ; Jamnik, D ; Kolo, C ; Röthel, W ; Völcker, C ; Uman, I ; Wallis-Plachner, S ; Walther, D ; Wiedner, U ; Berdoz, A R ; McCrady, R G ; Meyer, C A ; Suffert, Martin |
| Affiliation | (CERN) |
| Publication | 2000 |
| Imprint | 2000 |
| In: | Phys. Rev. D 61, 3 (2000) pp.032002/1-9 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LEAR ; PS197 |
| Abstract | We report on a measurement of the branching ratio of the rare decay omega to eta gamma relative to the well known decay omega to pi /sup 0/ gamma . The omega 's are produced in pp to eta omega and pp to pi /sup 0/ omega . Eigenstate mixing and interference effects of the omega and rho /sup 0/ are taken into account, as well as coherent interference with the background. We find evidence for the non- resonant annihilation channel B(pp to eta eta gamma )=(3.5+or-1.3)*10 /sup -5/ and limit the value of B( omega to eta gamma ) to the range of (0.7 to 5.5)*10/sup -4/ depending on the degree of coherence with the background. (19 refs). |
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Element opprettet 2000-02-24, sist endret 2017-12-11
