![Determination of the Branching Ratio and Certain Distributions for Two Modes of Decay of the [eta]0 Meson PDF](https://books.google.com/books/content/images/frontcover/ZM95NwAACAAJ?fife=w150-h200)
Author: John Arthur CampbellPublisher:
ISBN:
Category :
Languages : en
Pages : 178
Book Description
Determination of the Branching Ratio and Certain Distributions for Two Modes of Decay of the [eta]0 Meson
![Determination of the Branching Ratio and Certain Distributions for Two Modes of Decay of the [eta]0 Meson PDF](https://books.google.com/books/content/images/frontcover/ZM95NwAACAAJ?fife=w80-h100)
Author: John Arthur CampbellPublisher:
ISBN:
Category :
Languages : en
Pages : 178
Book Description
A Direct Measurement of the Branching Ratio for the Decay of the Eta Meson Into Two Photons
Author: David Brian WhiteMeasurement of the Branching Ratio for Eta-meson Decay Into a Neutral Pion and Two Photons
Author: Jason William BrudvikPublisher:
ISBN: 9780549130093
Category :
Languages : en
Pages : 240
Book Description
This dissertation presents the results of a measurement of the branching ratio for the rare decay eta → pi0gammagamma. The experiment was carried out in the A2 hall of the Mainz Microtron facility at the Institut fur Kernphysik, on the campus of Johannes Gutenberg Universitat Mainz, in Mainz, Germany. The experiment used the Glasgow-Mainz Tagger, which is a recoil-electron spectrometer, to determine the energy of the incident photons. The principal detector is the Crystal Ball, a highly segmented multiphoton spectrometer covering nearly 4pi steradians surrounding the experimental target. There is also a forward detector, TAPS, which is a multiphoton spectrometer arranged as a downstream wall of detectors. Furthermore, our setup includes an instrument used to differentiate between charged and neutral particles called the Particle Identification Detector, and a liquid hydrogen target. The kinematic-fit technique was used to select the eta → pi 0gammagamma events. The major backgrounds, namely eta → 3pi0 and eta → gammagamma decay and 2pi 0 production were measured simultaneously. The result for the branching ratio is BR(eta → pi0gammagamma) = (2.0+/-0.7) x 10-4. This corresponds to a partial width of Gamma (eta → pi0gammagamma) = 0.26 +/- 0.10 eV. This result is somewhat smaller than the result of recent experiments, it is consistent with theoretical calculations based on Chiral Perturbation Theory.
Neutral Decay Modes of the [eta] Meson
![Neutral Decay Modes of the [eta] Meson PDF](https://books.google.com/books/content/images/frontcover/RDfSAAAAMAAJ?fife=w80-h100)
Author: Michael Wood PetersPublisher:
ISBN:
Category : Mesons
Languages : en
Pages : 140
Book Description
A Determination of the Neutral to Charged Branching Ratio for Eta Meson Decay
Author: Harold Lee YargerPublisher:
ISBN:
Category : Mesons
Languages : en
Pages : 212
Book Description
Scientific and Technical Aerospace Reports
Author: Measurement of the Form Factors and Branching Ratio for the Charmed Meson Semileptonic Decay Mode D--−K*0(892)[mu]+[nu][subscript Mu]
![Measurement of the Form Factors and Branching Ratio for the Charmed Meson Semileptonic Decay Mode D--−K*0(892)[mu]+[nu][subscript Mu] PDF](https://books.google.com/books/content/images/frontcover/jqRsNwAACAAJ?fife=w80-h100)
Author: Steven W. CulyPublisher:
ISBN:
Category : Mesons
Languages : en
Pages : 452
Book Description
Branching Ratio Measurements and Isospin Analysis of Decays of the D Meson to Two Pions
Author: Chris JonesInvestigation of Dalitz Decays
Author: Henning BerghäuserPublisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN: 9783838124315
Category :
Languages : de
Pages : 268
Book Description
The investigation of Dalitz decays of neutral mesons is of general interest because the electromagnetic transition form factors observed in such decays provide a possibility to obtain information about the electromagnetic properties of the mesons as well as about their internal substructures. As a matter of fact quantum electrodynamics (QED) fails a correct prediction of Dalitz decays simply because the particles of focus are not point like. For that reason the vector meson dominance model (VMD) has been developed, which still requires further experimental verification. In the picture of VMD a virtual photon can couple to a vector meson as an intermediate state. With the CB/TAPS experiment at MAMI-C in Mainz, Germany, the Dalitz decays of the eta and the pion meson were measured and the associated transition form factors could be extracted. Moreover other decay modes of the pion, eta and the omega meson were investigated in order to determine the corresponding branching ratios. Beside a short theoretical introduction into the field of interest this work presents a full description of the experimental setup and contains detailed information about all steps of the analysis.
Author: Douglas Corey Reher