Werner  Vogelsang
Download
1 / 15

Werner Vogelsang RBRC & Nuclear Theory, BNL EIC workshop 03/15/2004 - PowerPoint PPT Presentation


  • 60 Views
  • Uploaded on

Werner Vogelsang RBRC & Nuclear Theory, BNL EIC workshop 03/15/2004. Why interest in small behavior of ? • by its own right: evolution, resummation • first moments GRSV : >10% of from. . U. Stösslein. . GRSV. GRSV.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Werner Vogelsang RBRC & Nuclear Theory, BNL EIC workshop 03/15/2004' - osric


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Werner Vogelsang

RBRC & Nuclear Theory, BNL

EIC workshop 03/15/2004


Why interest in small behavior of ?

• by its own right: evolution, resummation

• first moments

GRSV: >10% of from


?

U. Stösslein


?

GRSV


GRSV ?


• what does ?DGLAP evolution tell us ?

• at (and to lowest order):

• Mellin moments:


• can obtain solution: ?

• interplay between input and pert. evolution:

“flat” input : small-x behavior driven by evolution

*

power-like input

*

preserved under evolution -- rise indep. of

in any case, size & sign of crucial for

and hence forBall, Forte, Ridolfi

*



GRSV ?



L=2/fb ?

Stratmann


• higher orders in the splitting functions at small x: ?

• compare unpolarized case: (gq, gg spl. fcts.)

• all-order resummation in polarized case:

Kirschner,Lipatov; Bartels,Ermolaev,Ryskin;Kwiecinski,Ziaja; Ermolaev,Greco,Troyan; Maul

• small-x behavior of input remains relevant

• subleading terms probably remain crucial

Blümlein,Riemersma,Vogt



GRSV ?



ad