Final State Interactions And Single Spin Asymmetries In Semi Inclusive Deep Inelastic Scattering
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Final State Interactions And Single Spin Asymmetries In Semi Inclusive Deep Inelastic Scattering
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Author :
language : en
Publisher:
Release Date : 2007
Final State Interactions And Single Spin Asymmetries In Semi Inclusive Deep Inelastic Scattering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Recent measurements from the HERMES and SMC collaborations show a remarkably large azimuthal single-spin asymmetries A{sub UL} and A{sub UT} of the proton in semi-inclusive pion leptoproduction [gamma]*(q)p → [pi]X. We show that final-state interactions from gluon exchange between the outgoing quark and the target spectator system leads to single-spin asymmetries in deep inelastic lepton-proton scattering at leading twist in perturbative QCD; i.e., the rescattering corrections are not power-law suppressed at large photon virtuality q2 at fixed x{sub bj}. The existence of such single-spin asymmetries requires a phase difference between two amplitudes coupling the proton target with J{sup z}{sub p} = ±1/2 to the same final-state, the same amplitudes which are necessary to produce a nonzero proton anomalous magnetic moment. We show that the exchange of gauge particles between the outgoing quark and the proton spectators produces a Coulomb-like complex phase which depends on the angular momentum L{sup z} of the proton's constituents and thus is distinct for different proton spin amplitudes. The single-spin asymmetry which arises from such final-state interactions does not factorize into a product of structure function and fragmentation function, and it is not related to the transversity distribution [delta]q(x;Q) which correlates transversely polarized quarks with the spin of the transversely polarized target nucleon.
The Ivth International Conference On Quarks And Nuclear Physics
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Author : Antonio Dobado
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-11-07
The Ivth International Conference On Quarks And Nuclear Physics written by Antonio Dobado and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-07 with Science categories.
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.
Hadron Physics
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Author : Tullio Bressani
language : en
Publisher: IOS Press
Release Date : 2005
Hadron Physics written by Tullio Bressani and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
Valerio Filippini devoted his life to physics. His scientific contributions were provided in the OBELIX and FINUDA experiments. The FINUDA experiment collected physics data immediately after the roll-in, thanks to the reliability and simplicity of the on-line system designed and assembled by the physicist. This work is dedicated to him.
Proceedings Of The Conference On Continuous Advances In Qcd 2006
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Author : Marco M. Peloso
language : en
Publisher: World Scientific
Release Date : 2007
Proceedings Of The Conference On Continuous Advances In Qcd 2006 written by Marco M. Peloso and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Science categories.
The volume contains the proceedings of the workshop Continuous Advances in QCD 2006, hosted by the Wiliam I Fine Theoretical Physics Institute. This biennial workshop was the seventh meeting of the series, held at the University of Minnesota since 1994. The workshop gathered together about 110 scientists (a record number for the event), including most of the leading experts in quantum chromodynamics and non-Abelian gauge theories in general.
Exclusive Reactions At High Momentum Transfer Proceedings Of The International Workshop
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Author : Anatoly Radyushkin
language : en
Publisher: World Scientific
Release Date : 2008-03-13
Exclusive Reactions At High Momentum Transfer Proceedings Of The International Workshop written by Anatoly Radyushkin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-03-13 with Science categories.
Exclusive reactions are becoming one of the major sources of information about the deep structure of nucleons and other hadrons. The 2007 International Workshop held at Jefferson Lab in Newport News, Virginia, USA — the world's leading facility performing research on nuclear, hadronic and quark-gluon structure of matter — focused on the application of a variety of exclusive reactions at high momentum transfer, utilizing unpolarized and polarized beams and targets, to obtain information about nucleon ground-state and excited-state structure at short distances. This is a subject which is central to the programs of current accelerators and especially planned future facilities.This proceedings volume contains, in concentrated form, information about the newest developments, both theoretical and experimental, in the study of hard exclusive reactions.
Jet Quenching In Relativistic Heavy Ion Collisions At The Lhc
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Author : Aaron Angerami
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-02
Jet Quenching In Relativistic Heavy Ion Collisions At The Lhc written by Aaron Angerami and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-02 with Science categories.
This thesis presents the first measurements of jets in relativistic heavy ion collisions as reported by the ATLAS Collaboration. These include the first direct observation of jet quenching through the observation of a centrality-dependent dijet asymmetry. Also, a series of jet suppression measurements are presented, which provide quantitative constraints on theoretical models of jet quenching. These results follow a detailed introduction to heavy ion physics with emphasis on the phenomenon of jet quenching and a comprehensive description of the ATLAS detector and its capabilities with regard to performing these measurements.
Continuous Advances In Qcd 2006 Proceedings Of The Conference
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Author : Misha Shifman
language : en
Publisher: World Scientific
Release Date : 2007-03-12
Continuous Advances In Qcd 2006 Proceedings Of The Conference written by Misha Shifman and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-03-12 with Science categories.
The volume contains the proceedings of the workshop Continuous Advances in QCD 2006, hosted by the Wiliam I Fine Theoretical Physics Institute. This biennial workshop was the seventh meeting of the series, held at the University of Minnesota since 1994. The workshop gathered together about 110 scientists (a record number for the event), including most of the leading experts in quantum chromodynamics and non-Abelian gauge theories in general.
Hadron Physics
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Author : I.J. Douglas MacGregor
language : en
Publisher: CRC Press
Release Date : 2006-07-07
Hadron Physics written by I.J. Douglas MacGregor and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-07-07 with Science categories.
Straddling the traditional disciplines of nuclear and particle physics, hadron physics is a vital and extremely active research area, as evidenced by a 2004 Nobel prize and new research facilities, such as that scheduled to open at CERN. Scientifically it is of vital importance in extrapolating our knowledge of quark-gluon physics at the sub-nucleon level to provide a wider perspective of strongly interacting hadrons, which make up the vast bulk of known matter in the Universe. Through detailed, pedagogical chapters contributed by key international experts, Hadron Physics maps out our contemporary knowledge of the subject. It covers both the theoretical and experimental aspects of hadron structure and properties along with a wide range of specific research topics, results, and applications. Providing a full picture of activity in the field, the book highlights three particular areas of current research: computational lattice hadron physics, the structure and dynamics of hadrons, and generalized parton distributions. It provides a solid introduction, includes background theory, and presents the current state of understanding of the subject.
Transversity 2005
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Author : Philip G Ratcliffe
language : en
Publisher: World Scientific
Release Date : 2006-06-14
Transversity 2005 written by Philip G Ratcliffe and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-06-14 with Science categories.
The notion of transversity in hadronic physics has been with us for over 25 years. Intriguing though it might have been, for much of that time transversity remained an intangible and remote object, of interest principally to a few theoreticians. In recent years transversity and transverse-spin effects in general have grown as both theoretical and experimental areas of active research. This increasing attention has now matured into a thriving field with a driving force of its own. The ever-growing bulk of data on asymmetries in collisions involving transversely polarised hadrons demands a more solid and coherent theoretical basis for its description. Indeed, it now appears rather clear that transversity and other closely related properties play a significant role in such phenomena.As part of a Ministry-funded inter-university Research Project, this workshop was organised to gather together experimentalists and theoreticians engaged in investigating the nature of transverse spin in hadronic physics, with the intent of favouring the exchange of up-to-date theoretical and experimental ideas and news on the subject. Over 70 physicists took part and very nearly all the major experiments involved in transverse-spin studies were officially represented, as too were the main theory groups working in the field. New results and new analyses sparked many interesting and lively discussions.
Spin 2004 Proceedings Of The 16th International Spin Physics Symposium And Workshop On Polarized Electron Sources And Polarimeters With Cd Rom
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Author : Franco Bradamante
language : en
Publisher: World Scientific
Release Date : 2005-08-02
Spin 2004 Proceedings Of The 16th International Spin Physics Symposium And Workshop On Polarized Electron Sources And Polarimeters With Cd Rom written by Franco Bradamante and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-08-02 with Science categories.
This comprehensive volume covers the most recent advances in the field of spin physics, including the latest research in high energy and nuclear physics and the study of nuclear spin structure. The comprehensive coverage also includes polarized proton and electron acceleration and storage as well as polarized ion sources and targets. Many significant new results and achievements on the different topics considered at the symposium are presented in this book for the first time.