10 Theory

 

Bernd put together a Virtual Machine with both the CHE (NLO) and RHICBOS (Resummation) code, and directions for running these are posted.

RHICBOS directions

CHE directions

Comparison of AL for pp500 and pp510

 Using the CHE code (with DSSV and MRST2002) I compared W+ and W- AL for center of mass energy of 500 GeV (blue) and 510 GeV (red).  The change is small as expected, with a difference at mid-rapidity of less than 2%.

 

For completeness here are the numbers.

 


W+ pp500
eta=-2.25 AL=-0.133037
eta=-1.75 AL=-0.182091
eta=-1.25 AL=-0.232155
eta=-0.75 AL=-0.279067
eta=-0.25 AL=-0.319352
eta=0.25 AL=-0.372557
eta=0.75 AL=-0.414688
eta=1.25 AL=-0.451781
eta=1.75 AL=-0.514307
eta=2.25 AL=-0.673576
W+ pp510
eta=-2.25 AL=-0.120075
eta=-1.75 AL=-0.174056
eta=-1.25 AL=-0.228382
eta=-0.75 AL=-0.274046
eta=-0.25 AL=-0.319099
eta=0.25 AL=-0.372434
eta=0.75 AL=-0.415329
eta=1.25 AL=-0.456592
eta=1.75 AL=-0.512755
eta=2.25 AL=-0.669555

W- pp500
eta=-2.25 AL=0.018842
eta=-1.75 AL=0.0109192
eta=-1.25 AL=-0.00172645
eta=-0.75 AL=-0.00303291
eta=-0.25 AL=0.0446768
eta=0.25 AL=0.162059
eta=0.75 AL=0.287828
eta=1.25 AL=0.388246
eta=1.75 AL=0.448878
eta=2.25 AL=0.503238
W- pp510
eta=-2.25 AL=0.0195878
eta=-1.75 AL=0.0122011
eta=-1.25 AL=-0.000138017
eta=-0.75 AL=-0.00157857
eta=-0.25 AL=0.0450428
eta=0.25 AL=0.161664
eta=0.75 AL=0.282632
eta=1.25 AL=0.381473
eta=1.75 AL=0.448442
eta=2.25 AL=0.504252