Observation of gamma(4S) -> eta 'gamma(1S)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387029" target="_blank" >RIV/00216208:11320/18:10387029 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.121.062001" target="_blank" >https://doi.org/10.1103/PhysRevLett.121.062001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.121.062001" target="_blank" >10.1103/PhysRevLett.121.062001</a>

Result language
angličtina
Original language name
Observation of gamma(4S) -> eta 'gamma(1S)
Original language description
We report the first observation of the hadronic transition gamma(4S) -> eta'gamma(1S), using 496 fb(-1) data collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct the eta' meson through its decays to rho(0)gamma and to pi(+)pi(-)eta, with eta -> gamma gamma. We measure B(gamma(4S) -> eta'gamma(1S)) = [3.43 +/- 0.88(stat) +/- 0.21(syst)] x 10(-5), with a significance of 5.7 sigma.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/LTT17020" target="_blank" >LTT17020: Study of Beyond Standard Model Physics with the International Experiment Belle II in Japan</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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