The spin structure of the proton [electronic resource] / Steven D. Bass.

By:

Bass, Steven D

Material type: Text

text

Media type:

computer

Carrier type:

online resource

ISBN:

9812709487
9789812709486
1281918814
9781281918819

Subject(s): Genre/Form:

Additional physical formats: Print version:: Spin structure of the proton.DDC classification:

539.7/2123 22

LOC classification:

QC793.5.P725 B37 2008eb

Other classification:

UO 6120

Online resources:

EBSCOhost

Contents:

1. Introduction -- 2. Spin experiments and data -- 3. Dispersion relations and spin sum rules -- 4. g1 spin sum rules -- 5. Fixed poles -- 6. The axial anomaly, gluon topology and g(0)A -- 7. Chiral symmetry and axial U(1) dynamics -- 8. QCD inspired models of the proton spin problem -- 9. The spin-flavour structure of the proton -- 10. QCD fits to g1 data -- 11. Polarized quark distributions -- 12. Polarized glue ... -- 13. Transversity -- 14. Deeply virtual comptons scattering and exclusive processes -- 15. Polarized photon structure functions -- 16. Conclusion and open questions: how does the proton spin?

Summary: One 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 per cent 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 per cent. 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.

Holdings ( 1 )
Title notes ( 4 )

Holdings
Item type	Current library	Collection	Call number	Status	Date due	Barcode	Item holds
eBook	e-Library	EBSCO Science		Available

Total holds: 0

Includes bibliographical references (pages 189-198) and index.

Print version record.

One 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 per cent 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 per cent. 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.