We report the differential yields at mid-rapidity of the Breit-Wheeler process ($\gamma\gamma\rightarrow e^{+}e^{-}$) in peripheral Au+Au collisions at $\sqrt{s_{_{\rm{NN}}}} = $ 54.4 GeV and 200 GeV with the STAR experiment at RHIC, as a function of energy $\sqrt{s_{_{\rm{NN}}}}$, $e^{+}e^{-}$ transverse momentum $p_{\rm T}$, $p_{\rm T}^{2}$, invariant mass $M_{ee}$ and azimuthal angle. In the invariant mass range of 0.4 $<$$M_{ee}$$<$ 2.6 GeV/$c^{2}$ at low transverse momentum ($p_{\rm T}$$ < $0.15 GeV/$c$), the yields increase while the pair $\sqrt{\langle p_{\rm T}^{2} \rangle}$ decreases with increasing $\sqrt{s_{_{\rm{NN}}}}$, a feature is correctly predicted by the QED calculation. The energy dependencies of the measured quantities are sensitive to the nuclear form factor, infrared divergence and photon polarization. The data are compiled and used to extract the charge radius of the Au nucleus.
Revise your submission
This submission is already
finished. Uploading a new file
will create a new version, and will require
approval by the submission coordinator before
being available publicly.
Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC. HEPData (collection).
https://doi.org/10.17182/hepdata.153885
or, if you prefer, a specific version of the
record:
STAR
Collaboration
(2024).
Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC (Version 1). HEPData (collection).
https://doi.org/10.17182/hepdata.153885.v1
You can also cite the 30 data
tables
individually.
Data tables
Choose table:
STAR
Collaboration
(2024).
“Table from Fig. 6(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t1
STAR
Collaboration
(2024).
“Table from Fig. 6(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t2
STAR
Collaboration
(2024).
“Table from Fig. 6(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t3
STAR
Collaboration
(2024).
“Table from Fig. 6(d)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t4
STAR
Collaboration
(2024).
“Table from Fig. 7(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t5
STAR
Collaboration
(2024).
“Table from Fig. 7(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t6
STAR
Collaboration
(2024).
“Table from Fig. 7(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t7
STAR
Collaboration
(2024).
“Table from Fig. 7(d)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t8
STAR
Collaboration
(2024).
“Table1 from Fig. 8(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t9
STAR
Collaboration
(2024).
“Table2 from Fig. 8(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t10
STAR
Collaboration
(2024).
“Table3 from Fig. 8(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t11
STAR
Collaboration
(2024).
“Table1 from Fig. 8(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t12
STAR
Collaboration
(2024).
“Table2 from Fig. 8(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t13
STAR
Collaboration
(2024).
“Table3 from Fig. 8(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t14
STAR
Collaboration
(2024).
“Table1 from Fig. 8(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t15
STAR
Collaboration
(2024).
“Table2 from Fig. 8(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t16
STAR
Collaboration
(2024).
“Table3 from Fig. 8(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t17
STAR
Collaboration
(2024).
“Table from Fig. 9(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t18
STAR
Collaboration
(2024).
“Table from Fig. 9(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t19
STAR
Collaboration
(2024).
“Table from Fig. 9(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t20
STAR
Collaboration
(2024).
“Table from Fig. 9(d)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t21
STAR
Collaboration
(2024).
“Table1 from Fig. 10” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t22
STAR
Collaboration
(2024).
“Table2 from Fig. 10” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t23
STAR
Collaboration
(2024).
“Table from Fig. 10” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t24
STAR
Collaboration
(2024).
“Table from Fig. 11(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t25
STAR
Collaboration
(2024).
“Table from Fig. 11(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t26
STAR
Collaboration
(2024).
“Table from Fig. 11(c)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t27
STAR
Collaboration
(2024).
“Table from Fig. 11(d)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t28
STAR
Collaboration
(2024).
“Table from Fig. 12(a)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t29
STAR
Collaboration
(2024).
“Table from Fig. 12(b)” of “Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.153885.v1/t30
When using this data, please cite the original publication:
STAR
Collaboration
(2025).
Energy Dependence of Polarized $\mathbf{\gamma\gamma\rightarrow e^{+}e^{-}}$ in Peripheral Au+Au Collisions at RHIC. Phys.Rev.C 111 (2025) 014909.
or, if you prefer, a specific version of the
record:
You can also cite the 30 data
tables
individually.
Data tables
Choose table:
Ask a Question
Your question will be emailed to those involved with the submission.
Please mention the relevant table.
Please log in to HEPData to send a question.
Notify participants
Clicking Notify Participants will email all primary uploaders and
reviewers of this submission with your message and (optionally) the status
and messages for each table.
Emails sent.
Notify coordinator
Clicking Notify Coordinator will email the coordinator of this submission
to inform them that all tables have been approved.