STAR HardProbes PWG

[James Dunlop <dunlop AT bnl.gov>]

Ahmed, Nihar,

  The real question is what threshold you need.

BHT1, 2, 3 is just 3 different thresholds in Et for a single High Tower, 

which you can choose/negotiate with other PWG's.  e.g. Upsilon

tends to want a specific Et cut to avoid cutting too hard into the invariant

mass distribution beyond, say, 9 GeV in M (and so 4.5 GeV in Et, try to keep it more like 4 so

you can understand the combinatoric background),

 and UPC J/Psi wants their Et cut very low.

L2 is somewhat useful to moderate a strict high tower

into something that incorporates information from other

towers, but it can be problematic in the high Underlying Event

condition of Au+Au collisions.

--J

 

On Mar 31, 2023, at 6:45 PM, Ahmed M. Hamed via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Dear Nihar;

Thanks a lot for the slides.

Two comments and one question:

1) I don't understand why not L2gamma and not BHT3+L2gamma; I really don't know what BHT3 adds to the trigger components?

2) I think what you need to quote here (slide # 6) are the numbers of events as a percentage from the number of triggered events per luminosity, and not all events.

Question: Migrating from the mudst to picodst what information has been thrown away? e.g. Whether running the cluster algorithm (BSMD) for the transverse shower profile over the picodst is still an option; or one must run over the mudst files in order to find all information required by the cluster algo.; i.e. the energy and adc per strip.  

Best Regards

   

On Fri, Mar 31, 2023 at 2:23 PM Nihar Sahoo via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello All,

The proposed triggers for gamma+jet and HF physics have been updated as
Rongrong suggested.
(Slide#4)
  https://drupal.star.bnl.gov/STAR/blog/nihar/HP-pwg-Run23-discussion

Thank you
Nihar


On 2023-03-31 12:17, Ma, Rongrong wrote:
> Hello Nihar
>
>  Thanks for the slides. I think it will be nice if we can list
> explicitly the triggers we want.
>
>  In terms of quarkonium physics, here are the triggers we propose:
>
>       * dimuon+zdc_coin+vpd100
>       * BHT2+zdc_coin+vpd100
>       * BHT1+zdc_coin+vpd10
>
>       * monitor triggers: vpd-zdc-novtx, vpd-zdc-10
>
>  Best
>  Rongrong
>
> -------------------------
>
> From: Star-hp-l <star-hp-l-bounces AT lists.bnl.gov> on behalf of Nihar
> Sahoo via Star-hp-l <star-hp-l AT lists.bnl.gov>
> Sent: Thursday, March 30, 2023 12:45 AM
> To: Star-hp L <Star-hp-l AT lists.bnl.gov>
> Subject: [Star-hp-l] Run23 data taking plan from HP-pwg
>
> Hello HP-pwg members,
>
> We were asked to provide inputs, particularly on trigger setup, vertex
>
> selection, and BSMD usage, for Run23 data taking. You must have seen
> Rongrong's emails in this direction.
>
> A few slides that we have prepared our response (questions can be
> found
> inside).
> https://drupal.star.bnl.gov/STAR/blog/nihar/HP-pwg-Run23-discussion
>
> Mainly we have included STAR gamma+jet and also dimuon measurements
> requirement in these slides if you want to propose/suggest any
> specific
> trigger/detector usage for RUn23 relevant to your analysis, please let
>
> us know asap.
>
> Coming Monday we plan to present at the trigger board meeting.
>
> Thank you
> Nihar for HP-conveners
> _______________________________________________
> Star-hp-l mailing list
> Star-hp-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/star-hp-l
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