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Opened 16 years ago

Closed 16 years ago

Last modified 11 years ago

#14 closed defect (invalid)

PDF related bug / xsections and distrubitions are different for Zjets

Reported by: cakir@cern.ch Owned by: support@sherpa-mc.de
Priority: major Milestone:
Component: Unknown Version: 1.1.0
Keywords: Cc:

Description

I noticed that Sherpa Z jets generation gives a big different for xsections (cteq5l-cteq6l or cteq6l1) and course distrubitions different for PtZ. In my run files which i attached with xsections_*.dat file to this ticket( just only pdfs are different the rest is same). Could you clearify this problem since Drell-Yan case is almost factor by 2 different ! When i compare these xsections for cteq5l between version 1.1.1 and 1.1.0 are completely different (factor by two).

Altan

======================================================================================================================= # 2_2jjmu-mu+ 2_3jjmu-mu+j 2_4jjmu-mu+jj 2_5jjmu-mu+jjj

sqr(20/E_CMS) 612.479 0.613789 298.449 0.450771 188.465 0.407796 111.6

# 2_2jjmu-mu+ 2_3jjmu-mu+j 2_4jjmu-mu+jj 2_5jjmu-mu+jjj

sqr(20/E_CMS) 1130.06 0.518719 466.045 0.625771 288.113 0.427423 165.133 0.235182

=======================================================================================================================

Attachments (2)

xsections_140000.dat​ (429 bytes) - added by anonymous 16 years ago.
SherpaRun.tar​ (3.7 KB) - added by anonymous 16 years ago.

Download all attachments as: .zip

Change History (8)

Changed 16 years ago by anonymous

Attachment: xsections_140000.dat​ added

Changed 16 years ago by anonymous

Attachment: SherpaRun.tar​ added

comment:1 Changed 16 years ago by Frank Siegert

Hi Altan,

I am sorry, I got lost in your description. Are the numbers you are showing for cteq5l vs. cteq6l or are they for version 1.1.0 vs. version 1.1.1?

Please make your point as clear as possible, so that we have a chance of reproducing your findings.

Thanks, Frank

PS: In your Processes.dat there is a spelling error in "Order electroweak".

comment:2 Changed 16 years ago by anonymous

Hi Frank,

I get this cross sections in Sherpa-1.1.0 version between cteq5l and cteq6l1 but i noticed something for the time being (of course also Order Electroweak wrong spelling-can it effect so much ?) but in our interface (i am using cmssw for sherpa interface) i made a mistake inside the generation. We can erase this ticket basically this is not dealing with Sherpa generator.

Thank in advance,

Altan

comment:3 Changed 16 years ago by Frank Siegert

Resolution: → invalid
Status: new → closed

comment:4 Changed 16 years ago by anonymous

In my run files which i ​attached with xsections_*.dat file to this ticket( just only pdfs are different the rest is same). Could you clearify ​this problem since

comment:5 Changed 13 years ago by Frank Siegert

Milestone: → rel-old

comment:6 Changed 11 years ago by Stefan Hoeche

Milestone: old

Milestone old deleted

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