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Polarization Observables In The Photoproduction Of Two Pseudoscalar Mesons
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Book Synopsis Polarization Observables in the Photoproduction of Two Pseudoscalar Mesons by : Winston Roberts
Download or read book Polarization Observables in the Photoproduction of Two Pseudoscalar Mesons written by Winston Roberts and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The many polarization observables that can be measured in process like {gamma}N {yields} M{sub 1}M{sub 2}B, where M{sub 1} and M{sub 2} are pseudoscalar mesons and B is a spin-1/2 baryon, are discussed. The relationships among these observables, their symmetries, as well as inequalities that they satisfy are briefly discussed. Within the context of a particular model for {gamma}N {yields} NKK, some of the observables are calculated, and their sensitivity to the ingredients of the model, and hence to the underlying dynamics of the process, are discussed.
Book Synopsis Polarization Observables in the Photoproduction of Two Pseudoscalar Mesons by :
Download or read book Polarization Observables in the Photoproduction of Two Pseudoscalar Mesons written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The many polarization observables that can be measured in process like [gamma]N [yields] M[sub 1]M[sub 2]B, where M[sub 1] and M[sub 2] are pseudoscalar mesons and B is a spin-1/2 baryon, are discussed. The relationships among these observables, their symmetries, as well as inequalities that they satisfy are briefly discussed. Within the context of a particular model for [gamma]N [yields] NKK, some of the observables are calculated, and their sensitivity to the ingredients of the model, and hence to the underlying dynamics of the process, are discussed.
Book Synopsis Angular Distributions, Polarization Observables, Spin Density Matrices and Statistical Tensors in Photoproduction of Two Pseudoscalar Mesons Off a Nucleon by : Hiram Gabriel Menendez Santiago
Download or read book Angular Distributions, Polarization Observables, Spin Density Matrices and Statistical Tensors in Photoproduction of Two Pseudoscalar Mesons Off a Nucleon written by Hiram Gabriel Menendez Santiago and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In two meson photoproduction off a nucleon, for the case in which two of the three final state hadrons are products of the decay of an intermediate resonance, general expressions for its decay distribution and for polarization observables are derived in a model independent way. These are functions of either the spin density matrix elements (SDME's) or statistical tensors of the resonance, and the angles of its decay products. The expressions are general enough that it also describes cases where more than one resonance of arbitrary quantum numbers contributes, including interference effects. They can therefore be used to extract the SDME's or statistical tensors of the resonances that contribute to the reaction.
Book Synopsis Polarization Observables from Two-pion and --] Meson Photoproduction on Polarized HD Target at JLab by :
Download or read book Polarization Observables from Two-pion and --] Meson Photoproduction on Polarized HD Target at JLab written by and published by . This book was released on 2015 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The preliminary results discussed in this theses have been carried out with the Nuclear Physics group of the Department of Physics at the University of Rome Tor Vergata, under the supervision of Prof. A. D'Angelo. On March 2012 I joined the CLAS collaboration at the Thomas Jefferson National Laboratory, in Virginia, USA, and became a term member after a probation period of 9 months. As a member I could participate to the g14 data taking, started on November 18th 2011 and finished on May 18th 2012. In that period I was in charge of the timing calibration of the CLAS forward electromagnetic spectrometer. For the duration of the experiment, I was also responsible of the Raman laboratory located at the University of Rome Tor Vergata, where the Raman measurements were performed. The Raman measurements were crucial for determining the relative concentrations of H2 and D2 in the Hydrogen-Deuteride gas which was used for the target of the g14 experiment.
Book Synopsis Nstar 2005 - Proceedings Of The Workshop On The Physics Of Excited Nucleons by : Simon Capstick
Download or read book Nstar 2005 - Proceedings Of The Workshop On The Physics Of Excited Nucleons written by Simon Capstick and published by World Scientific. This book was released on 2006-06-08 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together experts on the quark-gluon structure of matter as it applies to nucleon resonance physics. The contributions discuss the latest findings in areas such as meson production via electromagnetic and hadronic reactions, baryon resonance structure in chiral and lattice QCD approaches, and the extraction of resonance parameters from coupled-channels analysis of data.
Book Synopsis Polarization Observables in the Longitudinal Basis for Pseudo-scalar Meson Photoproduction Using a Density Matrix Approach by :
Download or read book Polarization Observables in the Longitudinal Basis for Pseudo-scalar Meson Photoproduction Using a Density Matrix Approach written by and published by . This book was released on 2011 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complete expression for the intensity in pseudo-scalar meson photoproduction with a polarized beam, target, and recoil baryon is derived using a density matrix approach that offers great economy of notation. A Cartesian basis with spins for all particles quantized along a single direction, the longitudinal beam direction, is used for consistency and clarity in interpretation. A single spin-quantization axis for all particles enables the amplitudes to be written in a manifestly covariant fashion with simple relations to those of the well-known CGLN formalism. Possible sign discrepancies between theoretical amplitude-level expressions and experimentally measurable intensity profiles are dealt with carefully. Our motivation is to provide a coherent framework for coupled-channel partial-wave analysis of several meson photoproduction reactions, incorporating recently published and forthcoming polarization data from Jefferson Lab.
Book Synopsis Polarization Observables for Two-Pion Production Off the Nucleon by :
Download or read book Polarization Observables for Two-Pion Production Off the Nucleon written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We develop polarization observables for the processes [gamma]N → [pi][pi]N and [pi]N → [pi][pi]N, using both a helicity and hybrid helicity-transversity basis. Such observables are crucial if processes that produce final states consisting of a spin-1/2 baryon and two pseudoscalar mesons are to be fully exploited for baryon spectroscopy. We derive relationships among the observables, as well as inequalities that they must satisfy. We also discuss the observables that must be measured in ''complete'' experiments, and briefly examine the prospects for measurement of some of these observables in the near future.
Download or read book NSTAR 2005 written by Simon Capstick and published by World Scientific. This book was released on 2006 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together experts on the quark-gluon structure of matter as it applies to nucleon resonance physics. The contributions discuss the latest findings in areas such as meson production via electromagnetic and hadronic reactions, baryon resonance structure in chiral and lattice QCD approaches, and the extraction of resonance parameters from coupled-channels analysis of data.
Book Synopsis N* Physics - Proceedings Of The Fourth Cebaf/int Workshop by : Harry Tsung-shung Lee
Download or read book N* Physics - Proceedings Of The Fourth Cebaf/int Workshop written by Harry Tsung-shung Lee and published by World Scientific. This book was released on 1997-06-27 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been well recognized that the study of the excitations of the nucleon can shed light on the nonperturbative aspects of QCD. New opportunities for such study will be opened in the next few years with the commissioning of experiments in Hall B of the Continuous Electron Beam Accelerator Facility (CEBAF) at the Thomas Jefferson National Accelerator Facility (JLab). Photo- and electroproduction studies of single and double pions, rhos, omegas, and kaons will be conducted with unprecedented precision. The Hall B CLAS detector is a major step forward, promising to provide kinematically complete measurements of cross sections and spin observables. The task of extracting new insights from such detailed measurements will require close coordination between experimental and theoretical physicists.To help optimize this interface between theory and experiment, a joint CEBAF/INT workshop was held at the Institute of Nuclear Theory in Seattle, September 9-13, 1996. The foci of the 1996 workshop included: N → N∗ transition form factors as predicted by QCD-inspired models and their experimental consequences; theoretical techniques employing QCD sum rules, perturbative QCD, and lattice QCD; reaction theories of photo- and electro-production of mesons; theoretical issues in the eta meson, vector meson, and two-pion production channels; progress in developing amplitude analyses for the available and expected data; the relationship between the Hall B program and those of other new experimental facilities.This proceeding will serve readers as both a current perspective on the field and a guide to future experimental and theoretical research directions.
Book Synopsis Polarization Observables From The Photoproduction Of Omega-Mesons Using Linearly Polarized Photons by :
Download or read book Polarization Observables From The Photoproduction Of Omega-Mesons Using Linearly Polarized Photons written by and published by . This book was released on 2014 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on the extraction of Polarization Observables Spin Density Matrix Elements (SDMEs), and Beam Asymmetry Sigma for omega meson photoproduction using a beam of linearly polarized photons in the photon energy region of Egamma = 1.3 to 1.7 GeV, by means of the angular distributions of the daughter pions from omega decay. These preliminary results are from the g8b dataset, which were collected with the CLAS detector in Hall B of Jefferson Lab.
Book Synopsis Polarization Observables in Meson Photoproduction at GRAAL by : Antonio Giusa
Download or read book Polarization Observables in Meson Photoproduction at GRAAL written by Antonio Giusa and published by . This book was released on 2004 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Topics In Electron Scattering by : Bernard Frois
Download or read book Modern Topics In Electron Scattering written by Bernard Frois and published by World Scientific. This book was released on 1991-08-16 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the considerable progress recently achieved in the understanding of nucleon and nuclear structure by using high energy electrons as a probe. A collection of papers discusses in detail the new frontiers of this field. Experimental and theoretical articles cover topics such as the structure of the nucleon, nucleon distributions, many-body correlations, non-nucleonic degrees of freedom and few-body systems. This book is an up-to-date introduction to the research planned with continuous beam electron accelerators.
Book Synopsis Nstar 2001 - Proceedings Of The Workshop On The Physics Of Excited Nucleons by : Dieter Drechsel
Download or read book Nstar 2001 - Proceedings Of The Workshop On The Physics Of Excited Nucleons written by Dieter Drechsel and published by World Scientific. This book was released on 2001-08-28 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of N∗s can provide us with critical insights into the nature of QCD in the confinement domain. The keys to progress in this domain are the identification of its important degrees of freedom and the effective forces between them. The nucleon is the simplest system in which the nonabelian character of QCD is manifest. There are Nc quarks in a baryon because there are Nc colors, and as a consequence Gell-Mann and Zweig were forced to introduce the quarks in order to describe the octet and decuplet baryons.This volume gives a status report on the recent experimental and theoretical results in the field of nucleon resonance physics. A wealth of new high precision data was presented from facilities around the world, such as BES, BNL, ELSA, GRAAL, JLab, MAMI, MIT/Bates, SPring8, and Yerevan. Particular emphasis was laid on polarization degrees of freedom and large acceptance detectors as precision tools for studying small but important transition amplitudes, and the helicity (spin) structure of the nucleon. There were new results describing the nucleon resonance structure on the basis of quantum chromodynamics, either directly in terms of quarks and gluons by means of lattice gauge theory, or in terms of hadrons in the framework of chiral field theories. A status report on duality showed the surprising connections between the physics of the low energy nucleon resonance region and the realm of quark structure functions in deep inelastic scattering. Finally, this volume contains a summary report of the BRAG workshop, devoted to the analysis of baryon resonances.
Book Synopsis N* Physics and Nonperturbative Quantum Chromodynamics by : Silvano Simula
Download or read book N* Physics and Nonperturbative Quantum Chromodynamics written by Silvano Simula and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Workshop N* Physics and non-perturbative QeD was held at the Eu ropean Center for Theoretical Studies and Related Areas (ECT*) in Trento, Italy, during May 18-29, 1998. Previous workshops of the series on N* Physics took place at the Florida State University (1994), at CEBAF (1995), at the Institute for Nuclear Theory in Seattle (1996) and at the George Washington University (1997). The Workshop was devoted to a summary of recent experimental and the oretical research on N* phsyics and special emphasis was given to the infor mation that photo-and electro-production of nucleon resonances can provide on the non-perturbative regime of Quantum Chromodynamics. The idea was to stimulate discussions among experimentalists and theoreticians in order to pursue the interpretation of the huge amount of forthcoming data from several laboratories in the world. It was therefore decided to have both experimental and theoretical lectures on the main topics, like ,among the others, single and double pion production, TJ-and K-meson production, the GDH sum rule, the spin of the proton, etc. Thanks to the unusual two-week extension of the Work shop, the allotted time for the lectures was extended up to one hour in order to allow the invited lecturers to give a detailed presentation of their topics. Fi nally, various short contributions were selected to sharpen the discussion about selected items.
Book Synopsis Structure And Stability Of Nucleon And Nuclear Systems - Proceedings Of The Predeal International Summer School by : Apolodor A Raduta
Download or read book Structure And Stability Of Nucleon And Nuclear Systems - Proceedings Of The Predeal International Summer School written by Apolodor A Raduta and published by World Scientific. This book was released on 1999-02-25 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Predeal International Summer School, held at the Institute for Physics and Nuclear Engineering, Bucharest, Romania, is a prestigious scientific event. The school first took place in 1969 and since then it has been held every two years.This year the lectures were given by more than 30 outstanding professors, covering timely subjects in theoretical and experimental nuclear physics. In addition, there were special sessions of contributed papers presenting the most recent results in these domains. The aim of the school was thus two-fold: to give basic information on some hot subjects of research in nuclear physics and to present them with the most recent achievements in these fields. This volume contains the proceedings of the school.
Book Synopsis Baryons 2002, Proceedings Of The 9th International Conference On The Structure Of Baryons by : Bernhard Mecking
Download or read book Baryons 2002, Proceedings Of The 9th International Conference On The Structure Of Baryons written by Bernhard Mecking and published by World Scientific. This book was released on 2003-05-28 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the latest developments in the area of three-quark systems. Emphasis is given to the discussion of new experimental results in the areas of form factors, unpolarized and polarized structure functions, and baryon structure and spectroscopy. Of particular interest are the new theoretical developments in the area of generalized parton distributions and lattice quantum chromodynamics.
Book Synopsis Excited Nucleons and Hadronic Structure by : V. Burkert
Download or read book Excited Nucleons and Hadronic Structure written by V. Burkert and published by World Scientific. This book was released on 2001 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conference NSTAR 2000 was part of a series of conferences and workshops that began in New York in 1988. Since then, the field of excited nucleons and hadron structure has developed enormously, and the scope has broadened. Most significantly, new experimental facilities have come into operation, allowing precise measurements of resonance couplings and transition form factors. The search for ?missing? quark model states and gluonic excitations in complex hadronic channels is now possible.On the theory side, new and promising developments have emerged: quark models with meson degrees of freedom, hybrid baryon models, and studies of baryons in the limit of many colors. For the first time, lattice QCD has been employed to calculate masses of excited nucleons. Nucleon resonances are now recognized as providing significant contributions to the nucleon spin sum rules, as well as the Gerasimov-Drell-Hearn and Bjorken integrals, at finite momentum transfer.
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