
Higher twist effects in deeply virtual Compton scattering
Kurzinformation



inkl. MwSt. Versandinformationen
Artikel zZt. nicht lieferbar
Artikel zZt. nicht lieferbar

Beschreibung
In this work we explore the effects of higher twist power corrections on the deeply virtual Compton scattering process. The calculation of the helicity amplitudes for all possible polarization combinations is performed within the framework of QCD operator Product expansion. As a result the known accuracy of the amplitudes is improved to include the (kinematic) twist-4 contributions. For the most part the analysis focuses on spin-1/2 targets, the answers for scalar targets conveniently emerge as a byProduct. We investigate the analytical structure of these corrections and prove consistency with QCD factorization. We give an estimation of the numerical impact of the sub-leading twist contributions for proton targets with the help of a phenomenological model for the nonperturbative proton generalized parton distributions. We compare different twist approximations and relate predictions for physical observables to experiments performed by the Hall A, CLAS, HERMES, H1 and ZEUS collaborations. The estimate also includes a numerical study for planned COMPASS-II runs. Throughout the analysis special emphasis is put on the convention dependence induced by finite twist truncation of scattering amplitudes.
Produktdetails

So garantieren wir Dir zu jeder Zeit Premiumqualität.
Über den Autor
- Gebunden
- 416 Seiten
- Erschienen 1991
- Springer
- Hardcover
- 552 Seiten
- Erschienen 1996
- WORLD SCIENTIFIC PUB CO INC
- hardcover
- 770 Seiten
- Erschienen 2011
- World Scientific
- Hardcover
- 380 Seiten
- Erschienen 2000
- World Scientific Publishing...
- Taschenbuch
- 368 Seiten
- Erschienen 2020
- Wiley
- Hardcover
- 366 Seiten
- Erschienen 2012
- Taylor & Francis Inc
- Hardcover
- 133 Seiten
- Erschienen 2014
- IOP PUBL LTD
- Hardcover
- 576 Seiten
- Erschienen 1986
- Wiley-Interscience
- hardcover
- 588 Seiten
- Erschienen 2012
- De Gruyter
- paperback
- 680 Seiten
- Erschienen 2010
- Wiley-VCH
- Hardcover
- 392 Seiten
- Erschienen 2008
- World Scientific Publishing...
- hardcover
- 458 Seiten
- Erschienen 2012
- Wiley-VCH
- hardcover
- 232 Seiten
- Erschienen 2012
- Elsevier
- Hardcover
- 544 Seiten
- Erschienen 2002
- Springer
- Hardcover
- 486 Seiten
- Erschienen 1997
- John Wiley & Sons