Download or read book Search for In Medium Modifications of the rho Meson written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The photoproduction of vector mesons on various nuclei has been studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory, and here we present preliminary results. All three vector mesons, [rho], [omega], and [phi], are observed via their decay to e+e-, in order to reduce the effects of final state interactions in the nucleus. Of particular interest is possible in-medium effects on the properties of the [rho] meson. The [rho] spectral function is extracted from the data on various nuclei, carbon, iron, and titanium, and compared to the spectrum from liquid deuterium, which is relatively free of nuclear effects. We observe no effects on the mass of the [rho] meson, however, there is some widening of the resonance in titanium and iron, which is consistent with expected collisional broadening.
Download or read book Search for Medium Modification of the rho Meson written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The photoproduction of vector mesons on various nuclei has been studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory. The vector mesons, $\rho$, $\omega$, and $\phi$, are observed via their decay to $e^+e^-$, in order to reduce the effects of final state interactions in the nucleus. Of particular interest are possible in-medium effects on the properties of the $\rho$ meson. The $\rho$ spectral function is extracted from the data on various nuclei, carbon, iron, and titanium, and compared to the spectrum from liquid deuterium, which is relatively free of nuclear effects. We observe no significant mass shift for the $\rho$ meson; however, there is some widening of the resonance in titanium and iron, which is consistent with expected collisional broadening.
Download or read book Light Vector Mesons in the Nuclear Medium written by and published by . This book was released on 2008 with total page 15201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The light vector mesons ($\rho$, $\omega$, and $\phi$) were produced in deuterium, carbon, titanium, and iron targets in a search for possible in-medium modifications to the properties of the $\rho$ meson at normal nuclear densities and zero temperature. The vector mesons were detected with the CEBAF Large Acceptance Spectrometer (CLAS) via their decays to $e^{+}e^{-}$. The rare leptonic decay was chosen to reduce final-state interactions. A combinatorial background was subtracted from the invariant mass spectra using a well-established event-mixing technique. The $\rho$ meson mass spectrum was extracted after the $\omega$ and $\phi$ signals were removed in a nearly model-independent way. Comparisons were made between the $\rho$ mass spectra from the heavy targets ($A> 2$) with the mass spectrum extracted from the deuterium target. With respect to the $\rho$-meson mass, we obtain a small shift compatible with zero. Also, we measure widths consistent with standard nuclear many-body eff.
Download or read book Medium Modifications of Mesons written by and published by . This book was released on 2012 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Search for Modification of Vector Meson Properties in Nuclei written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of vector mesons, such as their mass and width, are predicted to be modified in dense medium such as a nucleus. This modification, if proven to exist, could be related to more fundamental physics such as a partial restoration of chiral symmetry at high density. The g7 (or E01-112) experiment has been designed to look for medium effects on the properties of the light vector mesons (rho, omega, and phi) in photoproduction, through their rare leptonic decay into e+e-. This decay channel has been preferred to the two pion channel to avoid distorting the information by strong final interaction. The data for this experiment was taken in the fall of 2002 using the CLAS detector at the Jefferson Lab. A bremstrahlung photon beam was sent on a target containing a liquid deuterium cell and several nuclear targets: C, Fe, Ti, and Pb. First results will be presented.
Download or read book Mesons and Quarks written by A. B. Santra and published by Alpha Science Int'l Ltd.. This book was released on 2004 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This monograph "Mesons and Quarks" includes a wide range of topics in the frontier areas of research in the overlapping field of nuclear and particle physics. It discusses various aspects of Quantum Chromodynamics (QCD) at different regimes of energy and density."--BOOK JACKET.
Download or read book Investigation of In medium Modifications of the omega Meson in Photonuclear Reactions written by David Trnka and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of In medium Modifications of the Omega Meson in Photonuclear Reactions written by David Trnka and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of In medium Modifications of the w63 omega Meson in Photonuclear Reactions written by David Trnka and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book From Nuclei to Stars written by Sabine Lee and published by World Scientific. This book was released on 2011 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a collection of essays of colleagues of Professor G E Brown, covering several areas in cutting-edge physics, to which he himself contributed in research and teaching. These will be among others, nuclear physics and particle physics theory, nuclear physics experiments and astrophysics. It is envisaged to include an introductory biographical chapter authored by the editor, and three shorter reminiscences of prominent colleagues, followed by around 20 contributions from former and current students, postdocs and colleagues.
Download or read book Electroproduction of the Rho Meson written by Leif Anderson Ahrens and published by . This book was released on 1978 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contemporary Nuclear Physics written by C. R. Praharaj and published by CRC Press. This book was released on 2003-09 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contributed papers presented at the National Seminar on "Contemporary Nuclear Physics", held at the Institute of Physics, Bhubaneswar.
Download or read book Relativistic Aspects Of Nuclear Physics Proceedings Of The 5th Workshop written by Takeshi Kodama and published by World Scientific. This book was released on 1998-11-20 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a collection of review articles and more specialized papers on the main issues of early universe physics. Both theoretical and experimental fields of research are dealt with.
Download or read book Nucleon nucleon Interaction And The Nuclear Many body Problem The Selected Papers Of Gerald E Brown And T T S Kuo written by Gerald E Brown and published by World Scientific. This book was released on 2010-07-05 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of some key developments in the understanding of the nucleon-nucleon interaction and nuclear many-body theory. The main problems at the level of meson exchange physics have largely been solved, and we now have an effective nucleon-nucleon interaction, pioneered in a renormalization group formalism by several of us at Stony Brook and our colleagues at Naples, which is nearly universally accepted as the unique low-momentum interaction that includes all experimental information to date.Our present understanding of these issues is based on a multi-step development in which different scientific insights and a wide range of physical and mathematical methodologies fed into each other. It is best appreciated by looking at the ‘steps along the way’, starting with the pioneering work of Brueckner and his collaborators that was just as necessary and important as the insightful improvements to Brueckner's theory by Hans Bethe and his students. Moving on from there, microscopic methods for nuclear structure calculations using the Brueckner G-matrix, and later low-momentum nucleon interactions, were developed and applied. With their influential 1967 paper, Brown and Kuo prepared the effective theory that allowed the description of nuclear properties directly from the underlying nucleon-nucleon interaction. Later, the addition of ‘Brown-Rho scaling’ to the one-boson-exchange model deepened the understanding of nuclear matter saturation, carbon-14 dating and the structure of neutron stars.
Download or read book Properties Of Hadron In Matter Proceedings Of The Aptctp Workshop On Astro hadron Physics In Honor Of Pro written by Gerald E Brown and published by World Scientific. This book was released on 1999-03-12 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume discusses recent developments in the physics of strongly interacting systems, with emphasis on matter under extreme conditions that are possibly encountered in astrophysical phenomena and relativistic heavy-ion collisions.
Download or read book The Width of the Rho Meson by the Balazs Method written by Adel Fadel Antippa and published by . This book was released on 1970 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relativistic Aspects Of Nuclear Physics Proceedings Of The 2nd International Workshop written by Takeshi Kodama and published by World Scientific. This book was released on 1992-06-09 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt:
