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Author : Antonio Giusa
Publisher :
ISBN 13 :
Total Pages : 53 pages
Book Rating : 4.:/5 (14 download)
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:
Author :
Publisher :
ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (16 download)
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.
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Author :
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ISBN 13 :
Total Pages : 167 pages
Book Rating : 4.:/5 (982 download)
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (953 download)
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.
Author : Volker Burkert
Publisher : World Scientific
ISBN 13 : 9814542709
Total Pages : 454 pages
Book Rating : 4.8/5 (145 download)
Download or read book Excited Nucleons And Hadron Structure - Proceedings Of The Nstar 2000 Conference written by Volker Burkert and published by World Scientific. This book was released on 2001-02-28 with total page 454 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.
Author : Dieter Drechsel
Publisher : World Scientific
ISBN 13 : 9814490040
Total Pages : 528 pages
Book Rating : 4.8/5 (144 download)
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.
Author : Winston Roberts
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)
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.
Author : Faqir C Khanna
Publisher : World Scientific
ISBN 13 : 9814554685
Total Pages : 450 pages
Book Rating : 4.8/5 (145 download)
Download or read book Symmetry And Spin In Standard Model - Proceedings Of The Seventh Lake Louise Winter Institute written by Faqir C Khanna and published by World Scientific. This book was released on 1992-12-09 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this Institute is the importance of Spin and Symmetry measurements in probing the Standard Model and QCD, polarization in lepton-quark interactions, nucleon spin structure functions, spin effects in high energy hadronic interactions, and electromagnetic spin physics at medium energies.The pedagogical nature of the invited talks makes this book suitable for senior graduate students and subatomic physicists in general, while the specialist talks make the volume useful to practitioners in the field.
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.
Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.X/5 (4 download)
Download or read book Proceedings of the ... International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon written by and published by . This book was released on 2002 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marco Anghinolfi
Publisher : World Scientific
ISBN 13 : 9812383972
Total Pages : 447 pages
Book Rating : 4.8/5 (123 download)
Download or read book GDH 2002 written by Marco Anghinolfi and published by World Scientific. This book was released on 2003 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the GDH 2002 symposium. It is a review of the most recent results on the nucleon spin structure and related sum rules using real and virtual photons. The latest theoretical developments and the new high precision data from different laboratories are presented and discussed. The book provides a comprehensive picture of the nucleon spin studies from the perturbative domain down to the resonance and low momentum transfer region.
Author : Marco Anghinolfi
Publisher : World Scientific
ISBN 13 : 9814485772
Total Pages : 447 pages
Book Rating : 4.8/5 (144 download)
Download or read book Gdh 2002, Proceedings Of The Second International Symposium On The Gerasimov-drell-hearn Sum Rule And The Spin Structure Of The Nucleon written by Marco Anghinolfi and published by World Scientific. This book was released on 2003-06-13 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the GDH 2002 symposium. It is a review of the most recent results on the nucleon spin structure and related sum rules using real and virtual photons. The latest theoretical developments and the new high precision data from different laboratories are presented and discussed. The book provides a comprehensive picture of the nucleon spin studies from the perturbative domain down to the resonance and low momentum transfer region.
Author : K.-M. Schmitt
Publisher : Springer Science & Business Media
ISBN 13 : 3709191912
Total Pages : 304 pages
Book Rating : 4.7/5 (91 download)
Download or read book Complete Atlas of Polarization Observables in Deuteron Photodisintegration Below Pion-Threshold written by K.-M. Schmitt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time, a complete calculation of all 288 polarization observables of deuteron photodisintegration for polarized photons and an oriented deuteron target is presented for energies below +-production threshold. The observables are calculated within a nonrelativistic framework but with inclusion of lowest-order relativistic effects. Explicit meson exchange currents and isobar configurations as manifestation of subnuclear degrees of freedom are included in the calculation. The sensitivity of the various polarization observables with respect to subnuclear degrees of freedom, to electric and magnetic multipole contributions and to a variety of realistic potential models are systematically investigated. Thus this atlas provides the most detailed and systematic survey on polarization observables of this important process. It allows to analyse the different dynamical properties of the np-system as contained in the various observables and, therefore, will be useful for both theoretical studies and for the planning and evaluation of experiments as well. It serves in addition as an important supplement to the recent general review on deuteron photodisintegration by A. Arenhövel and M. Sanzone (Few-Body Systems, Suppl. 3).
Author : Antonio Dobado
Publisher : Springer Science & Business Media
ISBN 13 : 3540725164
Total Pages : 615 pages
Book Rating : 4.5/5 (47 download)
Download or read book The IVth International Conference on Quarks and Nuclear Physics written by Antonio Dobado and published by Springer Science & Business Media. This book was released on 2008-11-07 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The QNP series of international conferences on Quarks and Nuclear Physics is by now a well established and highly respected forum where the most recent developments in the field are discussed and communicated. QNP 2006 is the forth edition of this biennial meeting. Selected and refereed original contributions of QNP 2006 have been published in The European Physical Journal A - Hadrons and Nuclei (EPJ A), while the present proceedings book, in addition to reprinting the articles published in EPJ A, further includes all other contributions selected and accepted by the organizing committee for publication and archiving.
Author : Jose Luis Goity
Publisher : World Scientific
ISBN 13 : 9814546046
Total Pages : 174 pages
Book Rating : 4.8/5 (145 download)
Download or read book Structure Of The Eta Meson - Proceedings Of The International Workshop written by Jose Luis Goity and published by World Scientific. This book was released on 1997-06-19 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on theoretical and experimental aspects of the η′ meson. The η′ pseudoscalar meson plays a special role in QCD as its mass is largely due to the explicit breaking of the axial U(1) symmetry by the quantum fluctuations of QCD (axial anomaly). The precise mechanism that gives the η′ its large mass is not yet fully understood, and also the current knowledge of the η′ specific properties is far from complete. This volume addresses both theoretical and experimental open issues of relevance in our understanding of this peculiar meson.
Author : Mamoru Fujiwara
Publisher : World Scientific
ISBN 13 : 9789812777218
Total Pages : 736 pages
Book Rating : 4.7/5 (772 download)
Download or read book Proceedings of the International Symposium, Electromagnetic Interactions in Nuclear and Hadron Physics written by Mamoru Fujiwara and published by World Scientific. This book was released on 2002 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final state interactions in [symbol] photoproduction near threshold / Y. Oh and T.-S.H. Lee -- The Q[symbol] evolution of the GDH sum rule (on [symbol]He and the neutron) / G.D. Cates -- Detailed study of the [symbol]he nuclei through response function separations at high momentum transfer / D.W. Higinbotham -- Final state interaction in [symbol] reaction: study of finite formation time effects / H. Morita [und weitere] -- Simultaneous measurement of the two-body photodisintegration of [symbol]H and [symbol]He / G.V. O'Rielly -- Nuclear medium effects in hadron leptoproduction / N. Bianchi -- Quasifree processes from nuclei: meson photoproduction and electron scattering / L.J. Abu-Raddad and J. Piekarewicz -- Quasielastic and [symbol] excitation in electron scattering / K.S. Kim [und weitere] -- Kaon photo- and electroproduction on the deuteron with beam and recoil polarizations / K. Miyagawa [und weitere] -- Electroproduction of strange nuclei / E.V. Hungerford -- Photoproducion of the [symbol](1020) near threshold in CLAS / D.J. Tedeschi for the CLAS Collab. -- K+ photoproduction at LEPS/SPring-8 / R.G.T. Zegers [und weitere] -- Polarization observables in kaon electroproduction with CLAS at Jefferson Laboratory / D.S. Carman -- Can the scalar mesons [symbol](980) be described by K + K? / R.T. Jones -- Meson photoproduction at GRAAL / O. Bartalini [und weitere] -- Giant resonances in nuclei near and far from [beta]-stability line / H. Sagawa -- Indirect measurements of the [symbol]B reaction / T. Motobayashi -- Search for an orbital magnetic quadrupole twist mode in nuclei with electron scattering at 180° / P. von Neumann-Cosel -- Spin-isospin interaction and properties in stable and exotic nuclei / T. Otsuka [und weiteren] -- Photonuclear reactions of light nuclei and few-body problems / T. Shima [und weiteren] -- Determination of S[symbol] based on CDCC analyses for [symbol]B / K. Ogata [und weiteren] -- E2 and M1 transitions among triaxially superdeformed bands in Lu isotopes / K. Sugawara-Tanabe and K. Tanabe
Author : Dieter Drechsel
Publisher : World Scientific
ISBN 13 : 9814491381
Total Pages : 430 pages
Book Rating : 4.8/5 (144 download)
Download or read book Gdh 2000 - The Gerasimov-drell-hearn Sum Rule & The Nucleon Spin Structure In The Resonance Region written by Dieter Drechsel and published by World Scientific. This book was released on 2001-02-05 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of spin in general, and of the nucleon spin structure in particular, has been full of surprises. For the past 25 years deep inelastic lepton scattering has been studied to determine the carriers of the nucleon spin. However, it was realized only recently that a full understanding of the nucleon spin will also require detailed information on the helicity structure in the resonance region, i.e. in the realm of nonperturbative QCD.This volume gives a status report on the spin structure in the nucleon resonance region, focusing on: new experimental results from SLAC and HERMES; a first glance at the JLab experiments to map out the spin structure functions at low and intermediate four-momentum transfers; the pioneering experiment at MAMI (Mainz) to determine the Gerasimov-Drell-Hearn sum rule for real photons; and recent theoretical concepts and investigations to describe the spin structure in the frameworks of higher twist expansion, phenomenological models and chiral perturbation theory.
