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Medium Modifications Of Light Vector Mesons In Nuclei
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Book Synopsis Medium Modifications of Light Vector Mesons in Nuclei by :
Download or read book Medium Modifications of Light Vector Mesons in Nuclei written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary results on the photoproduction of light vector mesons in nuclei using the Cebaf Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory are presented. The?,?, and? mesons are clearly observed via their decay to e+e-. This decay channel reduces the effects of final state interactions in the nucleus. Of particular interest are the possible in-medium effects on the properties of the? meson. The? mass spectrum is extracted from the data on various nuclei, carbon, iron, and titanium, and compared to the spectrum from deuterium, which is relatively free of nuclear effects. No effects on the mass of the? meson are observed, however, there is some widening of the resonance in titanium and iron, which is consistent with expected collisional broadening.
Book Synopsis Medium Modification of the Light Vector Mesons in Nuclei by :
Download or read book Medium Modification of the Light Vector Mesons in Nuclei written by and published by . This book was released on 2008 with total page 45209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical calculations predict the modification of properties of vector mesons, such as a shift in their masses and/or broadening of their widths in dense nuclear matter. These effects can be related to partial restoration of chiral symmetry at high density or temperature. Photoproduction of vector mesons off nuclei were performed at Jefferson Lab using the CEBAF Large Acceptance Spectrometer (CLAS). The data were taken with a beam of tagged photons with energies up to 4 GeV on various nuclear targets. The properties of the rho vector mesons were investigated via their rare leptonic decay to e+e?. This decay channel is preferred over hadronic modes in order to eliminate final state interactions in the nuclear matter. The combinatorial background in the mass spectrum was removed by a self-normalizing mixed-event technique. The rho meson mass distributions were extracted for each of the targets. Statistically significant results regarding medium modification of the rho meson in the nuc.
Book Synopsis Search for Modification of Vector Meson Properties in Nuclei by :
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.
Book Synopsis Light Vector Mesons in the Nuclear Medium by :
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.
Book Synopsis In-medium Properties of Light Vector Mesons by :
Download or read book In-medium Properties of Light Vector Mesons written by and published by . This book was released on 2007 with total page 7 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. All three vector mesons [rho], [omega] and phi are observed via their decay to e+e-. The possible in-medium effects on the properties of the [rho] meson are of particular interest. The [rho] spectral function is extracted from the data on 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, some widening in titanium and iron is observed consistent with the collisional broadening.
Book Synopsis Search for Medium Effects on Light Vector Mesons by :
Download or read book Search for Medium Effects on Light Vector Mesons 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 rho, omega, and phi mesons are observed via their decay to e+e-. The rho spectral function is extracted from the data on carbon, iron, and titanium. We observe no effects on the mass of the rho meson, some widening in titanium and iron is observed consistent with standard collisional broadening.
Book Synopsis Search for Medium Modification of the $\rho$ Meson by :
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.
Book Synopsis Mesons and Light Nuclei by : Emil Truhlík
Download or read book Mesons and Light Nuclei written by Emil Truhlík and published by Springer. This book was released on 1992 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Modification of Vector Meson Properties in Nuclei by : M. Wood
Download or read book Search for Modification of Vector Meson Properties in Nuclei written by M. Wood and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear And Particle Physics With High-intensity Proton Accelerators, Proceedings Of The 25th Ins International Symposium by : Takeshi K Komatsubara
Download or read book Nuclear And Particle Physics With High-intensity Proton Accelerators, Proceedings Of The 25th Ins International Symposium written by Takeshi K Komatsubara and published by World Scientific. This book was released on 1998-03-31 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied mathematics connects the mathematical theory to the reality by solving real world problems and shows the power of the science of mathematics, greatly improving our lives. Therefore it plays a very active and central role in the scientific world.This volume contains 14 high quality survey articles — incorporating original results and describing the main research activities of contemporary applied mathematics — written by top people in the field. The articles have been written in review style, so that the researcher can have a quick and thorough view of what is happening in the main subfields of applied mathematics.
Book Synopsis Hadron Modification in Nuclear Matter at CLAS. by :
Download or read book Hadron Modification in Nuclear Matter at CLAS. written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical calculations predict the modification of properties of vector mesons, such as a shift in their masses and/or broadening of their widths in dense nuclear matter. These effects can be related to partial restoration of chiral symmetry at high density or temperature. Photproduction of vector mesons off nuclei were performed at Jefferson Lab using the CEBAF Large Acceptance Spectrometer (CLAS). The data were taken with a beam of tagged photons with energies up to 4 GeV on various nuclear targets. The properties of the rho vector mesons were investigated via their rare leptonic decay to e+e-. This decay channel is preferred over hadronic modes in order to eliminate final state interactions in the nuclear matter. The combinatorial background in the mass spectrum was removed by a self-normalizing mixed-event technique. The rho meson mass distributions were extracted for each of the targets. Statistically significant results regarding medium modification of the rho meson in the nuc.
Book Synopsis The CBM Physics Book by : Bengt Friman
Download or read book The CBM Physics Book written by Bengt Friman and published by Springer. This book was released on 2011-03-03 with total page 973 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exhaustive survey is the result of a four year effort by many leading researchers in the field to produce both a readable introduction and a yardstick for the many upcoming experiments using heavy ion collisions to examine the properties of nuclear matter. The books falls naturally into five large parts, first examining the bulk properties of strongly interacting matter, including its equation of state and phase structure. Part II discusses elementary hadronic excitations of nuclear matter, Part III addresses the concepts and models regarding the space-time dynamics of nuclear collision experiments, Part IV collects the observables from past and current high-energy heavy-ion facilities in the context of the theoretical predictions specific to compressed baryonic matter. Part V finally gives a brief description of the experimental concepts. The book explicitly addresses everyone working or planning to enter the field of high-energy nuclear physics.
Download or read book Mesons in Nuclei written by Mannque Rho and published by North-Holland. This book was released on 1979 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Non-nucleonic Degrees Of Freedom Detected In The Nucleus (Nndf 96) by : Kensaku Matsuta
Download or read book Non-nucleonic Degrees Of Freedom Detected In The Nucleus (Nndf 96) written by Kensaku Matsuta and published by World Scientific. This book was released on 1997-08-27 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-nucleonic degrees of freedom in the nucleus must be understood in the nucleonic framework of nucleus in relation with the structure of the nucleons from which mesons are emitted to link the nucleons, and with isobars, mesonic exchange currents, and underlying conservation laws. This topical volume sheds light on these highly exciting non-nucleonic effects extracted as the result of interplay among the constituents including quarks, and on the limit of applicability of various conservation laws.
Book Synopsis Sixth International Conference on Perspectives in Hadronic Physics by : S. Boffi
Download or read book Sixth International Conference on Perspectives in Hadronic Physics written by S. Boffi and published by American Institute of Physics. This book was released on 2008-11-04 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the Conference was to discuss recent results and perspectives on the theoretical and experimental investigation of the structure of free hadrons and hadrons in the nuclear medium, as well as the structure of hadronic matter both at normal and extreme conditions. The Volume is a useful update of the subject for theorists and experimentalists working in medium and high energy nuclear physics.
Book Synopsis Simulations for an Experiment to Probe the In-medium Properties of Photoproduced Vector Mesons by : Clarisse Tur
Download or read book Simulations for an Experiment to Probe the In-medium Properties of Photoproduced Vector Mesons written by Clarisse Tur and published by . This book was released on 2003 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mesons And Nuclei At Intermediate Energies - Proceedings Of The International Conference by : Mikhail Kh Khankhasayev
Download or read book Mesons And Nuclei At Intermediate Energies - Proceedings Of The International Conference written by Mikhail Kh Khankhasayev and published by World Scientific. This book was released on 1995-02-17 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main goals of intermediate energy nuclear physics, which serves an important role as a bridge between nuclear and particle physics, is to construct the theory of strong interaction phenomena in terms of conventional degrees of freedom (nucleons, deltas and mesons) as well as of quark degrees of freedom.The main topics to be discussed at this conference are the interaction of pions and other mesons with nuclei at intermediate energies and the role of mesonic degrees of freedom in nuclear reactions, including photon, hadron and heavy ion induced reactions. Both theoretical and experimental results will be included.Over the past two decades, the Meson Factories, including LAMPF, TRIUMF, and PSI, have provided us with systematic experimental information on hadron-hadron and hadron-nucleus dynamics. Major accelerators of JINR are also suitable for studying problems in Intermediate Energy Nuclear Physics. At the present time, first experiments have been performed with the proton beams at the Moscow Meson Factory of INR. One of the purposes of this conference is to introduce the intermediate-energy physics community to the possibility of utilizing the facilities of JINR and INR during the next decade.
