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star-fcv-l - Re: [Star-fcv-l] Embedding request Lambda, H3L and H4L for FXT Au+Au 3.2 GeV

star-fcv-l AT lists.bnl.gov

Subject: STAR Flow, Chirality and Vorticity PWG

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Chronological Thread  
  • From: "Y.P.Zhang" <y.p.zhang AT impcas.ac.cn>
  • To: "STAR Flow, Chirality and Vorticity PWG" <star-fcv-l AT lists.bnl.gov>
  • Cc: Subhash Singha <subhash AT impcas.ac.cn>, jjia AT bnl.gov
  • Subject: Re: [Star-fcv-l] Embedding request Lambda, H3L and H4L for FXT Au+Au 3.2 GeV
  • Date: Sat, 9 Jul 2022 00:05:14 +0800 (GMT+08:00)

Dear Conveners,

For correcting detection efficiency and acceptance of Lambda,
$^3_{\Lambda}H$ (H3L) and $^4_{\Lambda}H$ (H4L) in collective flows analysis,
we would like to request embedding data for following decay channels of
above particles for Au+Au 3.2 GeV data :
-----------------------------------------------------------
1) Lambda-&gt;p+pi-
-----------------------------------------------------------
2) H4L-&gt;4He+pi-
*lifetime: 218 ps
-----------------------------------------------------------
3) H3L-&gt;3He+pi-
*H3L lifetime: 221 ps
-----------------------------------------------------------
4) H3L-&gt;d+p+pi- (free 3body) *H3L mass: 2991MeV/c2
*H3L lifetime: 221 ps
-----------------------------------------------------------
5) H3L -&gt; d + "Λ" (100% branch ratio), "Λ"-&gt; p + pi- (100% branch
ratio)
*H3L mass: 2991 MeV/c2
*H3L lifetime: 221 ps
*”Λ” mass: 1115.28 MeV/c2
*”Λ” mean lifetime: 10^{-20} s
*d mass/lifetime: 1875.613 MeV/stable
*p,π-: Normal particles
-----------------------------------------------------------

Each above decay channel has the same settings as following:
-----------------------------------------------------
TriggerSetup: production_4p59GeV_fixedTarget_2019
Production: P21id
Library: SL21d
Trigger: 680001
Event cuts: -198cm &lt; Vz &lt; 202cm and Vx^2+(Vy+2)^2 ≤ 4 cm
Centrality: 0-80%
Events: 2.5M
Uniform in Rapidity (CMS): [-1.5, 0.8]
Uniform in pT: [0.0, 5.0]
Uniform in phi: [0, 2π]
List of bad runs: {20180005, 20180006, 20180019, 20180025, 20181016,
20182034, 20183001, 20183013, 20183014, 20183019}
Embedding fraction: 5% of multiplicity
-----------------------------------------------------

if there are any other information needed, please let us know.

Thank you very much.

Best regards,

Yapeng &amp; Chengdong


------------------------------
中科院近代物理研究所
甘肃省兰州市南昌路509号,730000
Tel:0931-4525618



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