Author: Malcolm T. ButtramPublisher:
ISBN:
Category : Gamma decay
Languages : en
Pages : 91
Book Description
A Measurement of the Neutral Branching Ratios of the Eta Meson
Author: Malcolm T. ButtramPublisher:
ISBN:
Category : Gamma decay
Languages : en
Pages : 91
Book Description
Measurement 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.
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
EXPERIMENTAL DETERMINATION OF THE NEUTRAL BRANCHING RATIOS OF THE /eta/ MESON.
Author: A Direct Measurement of the Branching Ratio for the Decay of the Eta Meson Into Two Photons
Author: David Brian WhiteNuclear Science Abstracts
Author: Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 700
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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Author: Jewan Kim
Author: 
Author: