Photoproduction And Radiative Decay Of N Meson In Clas At Jlab PDF Download
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Author | : Georgie Mbianda Njencheu |
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Total Pages | : 324 |
Release | : 2017 |
Genre | : Meson spectroscopy |
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Download Photoproduction and Radiative Decay of N Meson in CLAS at JLAB Book in PDF, ePub and Kindle
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Total Pages | : 67 |
Release | : 2013 |
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Download Photoproduction and Decay of Light Mesons in CLAS. Book in PDF, ePub and Kindle
We present preliminary experimental results on photoproduction and decay of light mesons measured with CLAS setup at JLAB . This include Dalitz decay of pseudoscalar and vector mesons, radiative decay of pseudoscalar mesons as well hadronic decays of pseudoscalar and vector mesons. The collected high statistics in some of decay channels exceeds the world data by an order of magnitude and some other decay modes are observed for the first time. It is shown how the CLAS data will improve the world data on transition form factors of light mesons, Dalitz plot analyses, branching ratios of rare decay modes and other fundamental properties potentially accessible through the light meson decays.
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Release | : 2009 |
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Download Meson Photoproduction (CLAS). Book in PDF, ePub and Kindle
This is a brief and selective discussion of meson photoproduction measurements with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Meson photo- production is being used as a tool for various investigations, including the spectroscopy of baryons and mesons and the search for vector-meson medium modifications.
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Release | : 2016 |
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Download Photoproduction of the [math][mrow][msub][mi]f[/mi][mn]1[/mn][/msub][mrow][mo]([/mo][mn]1285[/mn][mo][/mo][/mrow][/mrow][/math] Meson Book in PDF, ePub and Kindle
The \fx\ meson with mass $1281.0 \pm 0.8$~MeV/$c^2$ and width $18.4 \pm 1.4$~MeV (FWHM) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the $\eta\pi^{+}\pi^{-}$, $K^+\bar{K}^0\pi^-$, and $K^-K^0\pi^+$ decay channels from threshold up to a center-of-mass energy of 2.8~GeV. The mass, width, and an amplitude analysis of the $\eta\pi^{+}\pi^{-}$ final-state Dalitz distribution are consistent with the axial-vector $J^P=1^+$ \fx\ identity, rather than the pseudoscalar $0^-$ \etax. The production mechanism is more consistent with $s$-channel decay of a high-mass $N^*$ state, and not with $t$-channel meson exchange. Decays to $\eta\pi\pi$ go dominantly via the intermediate $a_0^\pm(980)\pi^\mp$ states, with the branching ratio $\Gamma(a_0\pi \text{\small{ (no }} \bar{K} K\text{\small{)}}) / \Gamma(\eta\pi\pi \text{\small{ (all)}}) = 0.74\pm0.09$. The branching ratios $\Gamma(K \bar{K} \pi)/\Gamma(\eta\pi\pi) = 0.216\pm0.033$ and $\Gamma(\gamma\rho^0)/\Gamma(\eta\pi\pi) = 0.047\pm0.018$ were also obtained. The first is in agreement with previous data for the \fx, while the latter is lower than the world average.
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Total Pages | : 67 |
Release | : 2014 |
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Download Status of Meson Photoproduction Experiments with CLAS. Book in PDF, ePub and Kindle
A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Meson photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams in combination with longitudinally and transversely polarized frozen spin targets provide unique conditions for this type of experiments. For the first time, a complete or nearly complete measurement became possible and will allow model independent extraction of the reaction amplitude. The measurements were complete with both proton and deuteron targets. An overview of the collected experimental data will be presented.
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Release | : 2009 |
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Download G8b Experiment at JLab Book in PDF, ePub and Kindle
The experiments using polarized photos, at threshold energies, have been taken as relevant experiments because the physics behind them is expected to explain a bunch of problems into the hadronic physics. The nature of parity exchange at threshold energies, strangeness content of proton, violation of Okubo-Zweig-Iizuka observation (OZI rule), are examples of them. Photoproduction of vector mesons by using polarized photons gives a very important way to study those issues. Our goal will be measure the $\vec {\gamma} p \rightarrow \phi p $ reaction, with $\phi \rightarrow K^{+}K^{-} $, in the photon energy range of 1.7GeV to 2.1 GeV by using a Coherent Linear Polarized Photon Beam in Hall-B at Thomas Jefferson Laboratory (Newport News, VA). The experiment where data were taken was called "g8b."
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Release | : 2009 |
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Download CLAS+FROST Book in PDF, ePub and Kindle
A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams provide unique conditions for this type of experiments. Recent addition of the Frozen Spin Target (FROST) gives a remarkable opportunity to measure double and triple polarization observables for different pseudo-scalar meson photoproduction processes. For the first time, a complete or nearly complete experiment becomes possible and will allow model independent extraction of the reaction amplitude. An overview of the experiment and its current status is presented.
Author | : Ricardo Alarcon |
Publisher | : American Inst. of Physics |
Total Pages | : 538 |
Release | : 2007-11-09 |
Genre | : Science |
ISBN | : 9780735404618 |
Download VII Latin American Symposium on Nuclear Physics and Applications Book in PDF, ePub and Kindle
These proceedings aim to show the vitality and significance of nuclear science. The focus is the promotion of Nuclear Physics and its applications among Latin American laboratories and the international community. This Volume covers six main topics: Applications of Nuclear Physics, QCD in Nuclear Physics, Fundamental Symmetries and Neutrinos, Nuclear Structure and Reactions, Nuclear and Particle Astrophysics, and Facilities and Instrumentation.
Author | : Fred Jegerlehner |
Publisher | : Springer Science & Business Media |
Total Pages | : 433 |
Release | : 2008 |
Genre | : Science |
ISBN | : 3540726330 |
Download The Anomalous Magnetic Moment of the Muon Book in PDF, ePub and Kindle
This book reviews the present state of knowledge of the anomalous magnetic moment a=(g-2)/2 of the muon. The muon anomalous magnetic moment is one of the most precisely measured quantities in elementary particle physics and provides one of the most stringent tests of relativistic quantum field theory as a fundamental theoretical framework. It allows for an extremely precise check of the standard model of elementary particles and of its limitations.
Author | : Argonne National Laboratory. Physics Division |
Publisher | : |
Total Pages | : 312 |
Release | : 2001 |
Genre | : Nuclear physics |
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Download Physics Division Annual Report Book in PDF, ePub and Kindle