STAR HardProbes PWG

["Mooney, Isaac" <isaac.mooney AT yale.edu>]

Hi Rongrong,

Sorry for the delay. I sign off.

Best,

Isaac

On Jun 7, 2023, at 11:05 AM, Nihar Sahoo via Star-hp-l <star-hp-l AT lists.bnl.gov> wrote:

Hello Rongrong,

Please wait for another 2 days for any further comments.
I have signed off and have no further comments.

Best
Nihar



On 2023-06-07 00:30, Ma, Rongrong via Star-hp-l wrote:

Dear conveners
Please let us know if you have further comments. We would like to send
them to GPC for approval as the next step. Thanks.
Best
Rongrong

On Jun 1, 2023, at 3:21 PM, Ma, Rongrong via Star-hp-l
<star-hp-l AT lists.bnl.gov> wrote:
Hello Barbara
To elaborate a bit more on this. The R_AA values that Ziyang uses to
convert to yields include only AuAu uncertainties, which is why we
can use this method. The pp uncertainties are treated as global.
Thanks.
Best
Rongrong
On Jun 1, 2023, at 12:28 PM, zli1 via Star-hp-l
<star-hp-l AT lists.bnl.gov> wrote:
Dear Barbara,
Thank you for your comments.
Indeed, we derive the yields from R_AA. This is because we directly
combined R_AA from both channels beforehand, and as a result,
deriving the yields from the combined R_AA was a straightforward
method for us.
Regarding your concern about the treatment of uncertainties, these
are handled using a simple error propagation principle, given that
we are only multiplying R_AA by some constants. The systematic
uncertainties include signal extraction, tracking, and particle
identification (PID) uncertainties, and they do not incorporate any
global uncertainties.
Best,
Ziyang
On 2023-06-01 18:57, Barbara Trzeciak wrote:
Hi Ziyang,
thanks for this update.
Regarding the inv. yields that you show on slide 13, why do you
derive
the from RAA not directly from the corrected yields measured in
Au+Au
in both channels ?
It looks like a way around. Though it's also fine, depending on how
you treat the uncertainties which I'm not sure about from the
statement "uncertainties based on RAA".
Could you please provide more details ?
Cheers,
Barbara

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