A Measurement of the Proton Structure Function and a First Determination of the Gluon Distribution at Hera
Author: Maria Teresa P. Roco
Publisher:
Published: 1994
Total Pages: 350
ISBN-13:
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The Structure of the Proton
Author: R. G. Roberts
Publisher: Cambridge University Press
Published: 1993-11-26
Total Pages: 200
ISBN-13: 9780521449441
DOWNLOAD EBOOKThis graduate/research level book describes our present knowledge of protons and neutrons, the particles which make up the nucleus of the atom. Experiments using high energy electrons, muons and neutrinos reveal the proton as being made up of point-like constituents, quarks. The strong forces which bind the quarks together are described in terms of the modern theory of quantum chromodynamics (QCD), the â€~glue' binding the quarks being mediated by new constituents called gluons. Larger and new particle accelerators probe the interactions between quarks and gluons at shorter distances. The understanding of this detailed substructure and of the fundamental forces responsible is one of the keys to unravelling the physics of the structure of matter. This book will be of interest to all theoretical and experimental particle physicists.
The Spin Structure of the Proton
Author: Steven D. Bass
Publisher: World Scientific
Published: 2008
Total Pages: 212
ISBN-13: 9812709460
DOWNLOAD EBOOKOne of the main challenges in nuclear and particle physics in the last 20 years has been to understand how the proton's spin is built up from its quark and gluon constituents. Quark models generally predict that about 60% of the proton's spin should be carried by the spin of the quarks inside, whereas high energy scattering experiments have shown that the quark spin contribution is small - only about 30%. This result has been the underlying motivation for about 1000 theoretical papers and a global program of dedicated spin experiments at BNL, CERN, DESY and Jefferson Laboratory to map the individual quark and gluon angular momentum contributions to the proton's spin, which are now yielding exciting results. This book gives an overview of the present status of the field: what is new in the data and what can be expected in the next few years. The emphasis is on the main physical ideas and the interpretation of spin data. The interface between QCD spin physics and the famous axial U(1) problem of QCD (eta and etaprime meson physics) is also highlighted. Book jacket.
Proton Structure
Author: William L. Stubbs
Publisher: CreateSpace
Published: 2015-03-12
Total Pages: 106
ISBN-13: 9781508664062
DOWNLOAD EBOOKBeta decay implies that electrons and positrons reside within the nucleus of the atom. However, despite countless observations of electrons and positrons leaving the nucleus, the discovery of the neutron put an end to that notion. Proton Structure examines data collected on the proton over 50 years, to determine what a proton looks like. The book discusses the techniques used to interpret the data, in a manner many can understand. It walks, step-by-step, through the data collected, explaining what each aspect of the data reveals, to make a strong case for protons (and neutrons) made of electrons and positrons. Finally, it briefly looks at some implications of having nucleons made of these particles. Proton Structure takes another look at the structural data gathered on the proton, and offers a model of the proton that fits nicely into the world we see around us.
A Rocket Measurement of Low Energy Protons
Author: George A. Kuck
Publisher:
Published: 1967
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKhe proton energy spectra from L = 2 to L = 3 were measured by a two-detector solid-state telescope carried by a rocket launched on 30 March 1965. The spectra were found to be well fitted by single exponentials of the form exp ( -E/E sub 0) for the two energy regions 0.2 = or
Exploring the Size of the Proton
Author: Philipp Jörg
Publisher: Springer
Published: 2018-07-03
Total Pages: 236
ISBN-13: 3319902903
DOWNLOAD EBOOKThis book is a rare jewel, describing fundamental research in a highly dynamic field of subatomic physics. It presents an overview of cross section measurements of deeply virtual Compton scattering. Understanding the structure of the proton is one of the most important challenges that physics faces today. A typical tool for experimentally accessing the internal structure of the proton is lepton–nucleon scattering. In particular, deeply virtual Compton scattering at large photon virtuality and small four-momentum transfer to the proton provides a tool for deriving a three-dimensional tomographic image of the proton. Using clear language, this book presents the highly complex procedure used to derive the momentum-dissected transverse size of the proton from a pioneering measurement taken at CERN. It describes in detail the foundations of the measurement and the data analysis, and includes exhaustive studies of potential systematic uncertainties, which could bias the result.
