FWD Software

["Ogawa, Akio" <akio AT bnl.gov>]

Hello

Jpsi at eta>4 and low pt (even close to 0) can make e+e- pair into FCS since mass is big enough to make e+e- at pt~1GeV or more.

For MB, we used VPD which has ~30% efficiency.

Also we need to take into account prescale which is huge (PS~30k for VPDTAC-30 for a random run I picked)

For Jpsi trigger in run22, we had to put a bit higher than desired thresholds. So its not 100% but hopefully not too bad.

Livetime is another factor but minor correction.

Is tracking eff that low in pp??? Is that efficiency plot still valid for current software?

Akio

From: star-fwd-software-l-request AT lists.bnl.gov <star-fwd-software-l-request AT lists.bnl.gov> on behalf of "Mooney, Isaac" <star-fwd-software-l AT lists.bnl.gov>
Date: Friday, April 10, 2026 at 12:10 AM
To: star-fwd-software-l AT lists.bnl.gov <star-fwd-software-l AT lists.bnl.gov>
Subject: Re: [[Star-fwd-software-l] ] Meeting tomorrow

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Hi all,

Here’s a quick update on the yield estimation: https://drupal.star.bnl.gov/STAR/blog/imooney/Jpsi-yield-estimation-Run-22-pp-data. Would be happy to hear feedback either offline or during the meeting next week if I’m able to join. 

Thanks,

Isaac

On Apr 9, 2026, at 09:57, Mooney, Isaac <star-fwd-software-l AT lists.bnl.gov> wrote:

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Hi all,

I won’t be able to join as we have the Hard Probes meeting this morning, but will send an update to this list later today on J/psi yield estimation, as promised last time.

Thanks,

Isaac

El abr 8, 2026, a la(s) 12:51, Jindal, Nicholas <star-fwd-software-l AT lists.bnl.gov> escribió:



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Hi All,

We will have a FWD software meeting tomorrow at 10AM EST at this Zoom link:

https://osu.zoom.us/j/92668696344?pwd=UVpzV2FmeU8ycGtaUzVtQ3FTNjJzdz09

Best,

-- 

Nicholas Jindal

PhD Candidate

The Ohio State University Department of Physics

jindal.78 AT osu.edu