The Theory Of Pion Electroproduction

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The Theory Of Pion Electroproduction

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Author : James Thomas MacMullen
language : en
Publisher:
Release Date : 1979

The Theory Of Pion Electroproduction written by James Thomas MacMullen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Pions categories.

Threshold Pion Electroproduction In Chiral Perturbation Theory

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Author : V. Bernard
language : en
Publisher:
Release Date : 1994

Threshold Pion Electroproduction In Chiral Perturbation Theory written by V. Bernard and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Chirality categories.

Neutral Pion Electroproduction Off Light Nuclei In Chiral Perturbation Theory

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Author : Mark Lenkewitz
language : en
Publisher:
Release Date : 2013

Neutral Pion Electroproduction Off Light Nuclei In Chiral Perturbation Theory written by Mark Lenkewitz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Pion Electroproduction

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Author : Edoardo Amaldi
language : en
Publisher: Springer
Release Date : 2006-04-11

Pion Electroproduction written by Edoardo Amaldi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-11 with Science categories.

Chiral Effective Field Theory In The Delta 1232 Region

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Author :
language : en
Publisher:
Release Date : 2006

Chiral Effective Field Theory In The Delta 1232 Region written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

We develop an extension of chiral perturbation theory to the [Delta](1232)-resonance energy region and apply it to investigate the pion electroproduction off the nucleon (e− N → e− N [pi]). We present a complete calculation of this process, in the [Delta]-resonance region, up to next-to-leading order in the [delta]-expansion. At this order, the only free parameters are the three low-energy constants corresponding to the magnetic (M1), electric (E2), and Coulomb (C2) [gamma] N → [Delta] transition strength. After fitting these parameters to a few well-known data, our calculation provides a prediction for observables and multipole amplitudes of pion electroproduction. These results compare favorably with the phenomenological multipole solutions and recent experimental results from MIT-Bates and MAMI. Our prediction for the pion-mass dependence of the [gamma]N[Delta] form factors offers an explanation for the discrepancy between the recent lattice-QCD results and the experimental value for the ''C2/M1 ratio'' at low Q2.

Threshold Photo And Electroproduction Of Pions From Nuclei

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Author : Edward T. Dressler
language : en
Publisher:
Release Date : 1977

Threshold Photo And Electroproduction Of Pions From Nuclei written by Edward T. Dressler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Coupling constants categories.

Threshold Photo And Electroproduction Of Pions From Nuclei Classic Reprint

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Author : Edward T. Dressler
language : en
Publisher: Forgotten Books
Release Date : 2017-11-19

Threshold Photo And Electroproduction Of Pions From Nuclei Classic Reprint written by Edward T. Dressler and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-19 with Business & Economics categories.

Excerpt from Threshold Photo and Electroproduction of Pions From Nuclei To find the amplitude from a single nucleon, one usually starts by considering which relativistic Feynman diagrams are important in the particular energy region under consideration. For the case of a purely electromagnetic interaction as in electron scattering, photo or electro disintegration, or Compton scattering, one can use perturbation theory and quantum field theory to give the appropriate Feynman diagrams to a particular order in the coupling constant. However, in photo or electro production of pions, we now have electromagnetic and strong interactions, and since the coupling constant in strong interactions is large, the perturbation expansion in powers of the coupling constant will not con verge. In spite of this fact, the lowest order term in the expansion using pseudovector pion-nuclear coupling, gives results which under cer tain conditions agree very well with experiment and with the low energy theorem derived from the theory of the pcac (partially conserved axial current) Therefore, we will use the lowest order perturbation term as our model for the threshold photo pion production amplitude off of a nucleon. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

I Photoproduction And Electroproduction Of Pions As A Possible Way To Measure The Electromagnetic Structure Of The Pion

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Author : Fokion Timoleon Hadjioannou
language : en
Publisher:
Release Date : 1961

I Photoproduction And Electroproduction Of Pions As A Possible Way To Measure The Electromagnetic Structure Of The Pion written by Fokion Timoleon Hadjioannou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.

Electroproduction Of Pions From Hydrogen And Deuterium

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Author : Gerald G. Ohlsen
language : en
Publisher:
Release Date : 1960

Electroproduction Of Pions From Hydrogen And Deuterium written by Gerald G. Ohlsen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with categories.

Electroproduction Of Pions At Threshold In Chiral Perturbation Theory

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Author :
language : en
Publisher:
Release Date : 1995

Electroproduction Of Pions At Threshold In Chiral Perturbation Theory written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.

The electroproduction of pions off protons close to threshold is studied within the framework of baryon chiral perturbation theory. The approach is based on the fundamental QCD property that at low energies the strong interactions are dictated by the spontaneously broken chiral symmetry. The calculation was done up to the 1-loop level by carrying out order-by-order renormalization procedures. A thorough study of the low-energy theorems related to electroproduction of pions was carried out. Our study showed how the axial radius of the nucleon can be related to the S-wave multipoles E{sub 0+}{sup ( - )} and L{sub 0+}{sup ( - )}.