STAR HardProbes PWG

[Nihar Sahoo <nihar AT rcf.rhic.bnl.gov>]

Dear Lijuan,

sorry, I could not join yesterday trigger board meeting.

As per BUR 23+25, we have mainly Jet substructure, gamma+jet, J/psi and 
Upsilon physics program in Au+Au.

1) For Jet substructure measurement, HT1 and HT2 with 11 (~2.6 GeV) and 
18 (~4.2 GeV), respectively, would be OK.
2) For gamma+jet: BHT3(+L2gamma) 25 (~5.9 GeV); I think this is same 
with previous runs; so it is OK.
3) J/psi: probably Lower HT1 threshold 11 (~2.6 GeV)
4)Upsilon: both HT1,2 with threshold 11 and 18 would be Ok.
But need to confirm from PAs (Others can comment) if it is Ok to use HT2 
as 15 (~3.5) for Upsilon analysis or not.

Thank you
Nihar


> For Run23, we have the following:
> BHT1-VPD100: the threshold is 11
> BHT2-VPD100: the threshold is 18
> BHT3: the threshold is 25

On 2023-06-21 18:54, ruanlj via Star-triggerboard-l wrote:
> Hi All,
>  After yesterday's trigger board meeting, I went to check the BHT
> thresholds for Run 16.
> As mentioned by Rongrong, there was no BHT2 trigger for hard probes 
> physics.
> There were two triggers:
> BHT1-VPD10: the threshold was set to 16 and later was changed to 15
> BHT3: the threshold was 25
>
> For Run23, we have the following:
> BHT1-VPD100: the threshold is 11
> BHT2-VPD100: the threshold is 18
> BHT3: the threshold is 25
>
> My question to hard probes pwg/experts: is the current threshold
> setting for BHT triggers good for your physics program?
>
> Lijuan
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