Light nuclei femtoscopy and baryon interactions in 3 GeV Au+Au collisions at RHIC

doi:10.1016/j.physletb.2025.139412

Light nuclei femtoscopy and baryon interactions in 3 GeV Au+Au collisions at RHIC

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Abstract

We report the measurements of proton-deuteron (p-d) and deuteron-deuteron (d-d) correlation functions in Au+Au collisions at s_NN = 3 GeV using fixed-target mode with the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). For the first time, the source size (R_G), scattering length (f₀), and effective range (d₀) are extracted from the measured correlation functions with a simultaneous fit. The spin-averaged f₀ for p-d and d-d interactions are determined to be -5.28 ± 0.11(stat.) ± 0.82(syst.) fm and -2.62 ± 0.02(stat.) ± 0.24(syst.) fm, respectively. The measured p-d interaction is consistent with theoretical calculations and low-energy scattering experiment results, demonstrating the feasibility of extracting interaction parameters using the femtoscopy technique. The reasonable agreement between the experimental data and the calculations from the transport model indicates that deuteron production in these collisions is primarily governed by nucleon coalescence.

Original language	English
Article number	139412
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	864
DOIs	https://doi.org/10.1016/j.physletb.2025.139412
State	Published - May 2025

Bibliographical note

Publisher Copyright:
© 2025 The Author(s)

Funding

We thank Drs. B. Dönigus, V. Koch, Y. Kamiya, A. Ohnishi, S. Pratt, A. Schwenk for insightful discussions. We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science, the U.S. National Science Foundation, National Natural Science Foundation of China, Chinese Academy of Science, the Ministry of Science and Technology of China and the Chinese Ministry of Education, the Higher Education Sprout Project by Ministry of Education at NCKU, the National Research Foundation of Korea, Czech Science Foundation and Ministry of Education, Youth and Sports of the Czech Republic, Hungarian National Research, Development and Innovation Office, New National Excellency Programme of the Hungarian Ministry of Human Capacities, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre and WUT ID-UB of Poland, the Ministry of Science, Education and Sports of the Republic of Croatia, German Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF), Helmholtz Association, Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan Society for the Promotion of Science (JSPS) and Agencia Nacional de Investigación y Desarrollo (ANID) of Chile.

Funders	Funder number
Hungarian Ministry of Human Capacities
National Research Foundation of Korea
Max Delbrück Center for Molecular Medicine in the Helmholtz Association
Ministry of Education of the People's Republic of China
Narodowe Centrum Nauki
Grantová Agentura České Republiky
National Science Foundation Arctic Social Science Program
Japan Society for the Promotion of Science
Agencia Nacional de Investigación y Desarrollo
Bundesministerium für Bildung und Forschung
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal
Rose Community Foundation
Ministry of Education at NCKU
Ministry of Science and Technology of the People's Republic of China
Ministry of Science Education and Sports of the Republic of Croatia
Department of Atomic Energy and Department of Science and Technology
Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie
WUT ID-UB of Poland
Chinese Academy of Sciences
Office of Science Programs
Institute for Nuclear Physics
Ministerstvo Školství, Mládeže a Tělovýchovy
RHIC Operations Group
Ministry of Education, Culture, Sports, Science and Technology
National Natural Science Foundation of China (NSFC)

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2025.139412

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@article{8afff748d1fe4250a5b8accdb6cae4a7,

title = "Light nuclei femtoscopy and baryon interactions in 3 GeV Au+Au collisions at RHIC",

abstract = "We report the measurements of proton-deuteron (p-d) and deuteron-deuteron (d-d) correlation functions in Au+Au collisions at sNN = 3 GeV using fixed-target mode with the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). For the first time, the source size (RG), scattering length (f0), and effective range (d0) are extracted from the measured correlation functions with a simultaneous fit. The spin-averaged f0 for p-d and d-d interactions are determined to be -5.28 ± 0.11(stat.) ± 0.82(syst.) fm and -2.62 ± 0.02(stat.) ± 0.24(syst.) fm, respectively. The measured p-d interaction is consistent with theoretical calculations and low-energy scattering experiment results, demonstrating the feasibility of extracting interaction parameters using the femtoscopy technique. The reasonable agreement between the experimental data and the calculations from the transport model indicates that deuteron production in these collisions is primarily governed by nucleon coalescence.",

author = "Aboona, \{B. E.\} and J. Adam and L. Adamczyk and I. Aggarwal and Aggarwal, \{M. M.\} and Z. Ahammed and Aschenauer, \{E. C.\} and S. Aslam and J. Atchison and V. Bairathi and X. Bao and K. Barish and S. Behera and R. Bellwied and P. Bhagat and A. Bhasin and S. Bhatta and Bhosale, \{S. R.\} and J. Bielcik and J. Bielcikova and Brandenburg, \{J. D.\} and C. Broodo and Cai, \{X. Z.\} and H. Caines and \{Calder{\'o}n de la Barca S{\'a}nchez\}, M. and D. Cebra and J. Ceska and I. Chakaberia and P. Chaloupka and Chan, \{B. K.\} and Z. Chang and A. Chatterjee and D. Chen and J. Chen and Chen, \{J. H.\} and Q. Chen and Z. Chen and J. Cheng and Y. Cheng and W. Christie and X. Chu and S. Corey and Crawford, \{H. J.\} and M. Csan{\'a}d and G. Dale-Gau and A. Das and Deppner, \{I. M.\} and A. Deshpande and A. Dhamija and R. Fatemi",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s)",

year = "2025",

month = may,

doi = "10.1016/j.physletb.2025.139412",

language = "English",

volume = "864",

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T1 - Light nuclei femtoscopy and baryon interactions in 3 GeV Au+Au collisions at RHIC

AU - Aboona, B. E.

AU - Adam, J.

AU - Adamczyk, L.

AU - Aggarwal, I.

AU - Aggarwal, M. M.

AU - Ahammed, Z.

AU - Aschenauer, E. C.

AU - Aslam, S.

AU - Atchison, J.

AU - Bairathi, V.

AU - Bao, X.

AU - Barish, K.

AU - Behera, S.

AU - Bellwied, R.

AU - Bhagat, P.

AU - Bhasin, A.

AU - Bhatta, S.

AU - Bhosale, S. R.

AU - Bielcik, J.

AU - Bielcikova, J.

AU - Brandenburg, J. D.

AU - Broodo, C.

AU - Cai, X. Z.

AU - Caines, H.

AU - Calderón de la Barca Sánchez, M.

AU - Cebra, D.

AU - Ceska, J.

AU - Chakaberia, I.

AU - Chaloupka, P.

AU - Chan, B. K.

AU - Chang, Z.

AU - Chatterjee, A.

AU - Chen, D.

AU - Chen, J.

AU - Chen, J. H.

AU - Chen, Q.

AU - Chen, Z.

AU - Cheng, J.

AU - Cheng, Y.

AU - Christie, W.

AU - Chu, X.

AU - Corey, S.

AU - Crawford, H. J.

AU - Csanád, M.

AU - Dale-Gau, G.

AU - Das, A.

AU - Deppner, I. M.

AU - Deshpande, A.

AU - Dhamija, A.

AU - Fatemi, R.

PY - 2025/5

Y1 - 2025/5

N2 - We report the measurements of proton-deuteron (p-d) and deuteron-deuteron (d-d) correlation functions in Au+Au collisions at sNN = 3 GeV using fixed-target mode with the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). For the first time, the source size (RG), scattering length (f0), and effective range (d0) are extracted from the measured correlation functions with a simultaneous fit. The spin-averaged f0 for p-d and d-d interactions are determined to be -5.28 ± 0.11(stat.) ± 0.82(syst.) fm and -2.62 ± 0.02(stat.) ± 0.24(syst.) fm, respectively. The measured p-d interaction is consistent with theoretical calculations and low-energy scattering experiment results, demonstrating the feasibility of extracting interaction parameters using the femtoscopy technique. The reasonable agreement between the experimental data and the calculations from the transport model indicates that deuteron production in these collisions is primarily governed by nucleon coalescence.

AB - We report the measurements of proton-deuteron (p-d) and deuteron-deuteron (d-d) correlation functions in Au+Au collisions at sNN = 3 GeV using fixed-target mode with the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). For the first time, the source size (RG), scattering length (f0), and effective range (d0) are extracted from the measured correlation functions with a simultaneous fit. The spin-averaged f0 for p-d and d-d interactions are determined to be -5.28 ± 0.11(stat.) ± 0.82(syst.) fm and -2.62 ± 0.02(stat.) ± 0.24(syst.) fm, respectively. The measured p-d interaction is consistent with theoretical calculations and low-energy scattering experiment results, demonstrating the feasibility of extracting interaction parameters using the femtoscopy technique. The reasonable agreement between the experimental data and the calculations from the transport model indicates that deuteron production in these collisions is primarily governed by nucleon coalescence.

UR - https://www.scopus.com/pages/publications/105001473666

UR - https://www.scopus.com/inward/citedby.url?scp=105001473666&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2025.139412

DO - 10.1016/j.physletb.2025.139412

M3 - Article

AN - SCOPUS:105001473666

SN - 0370-2693

VL - 864

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 139412

ER -

Light nuclei femtoscopy and baryon interactions in 3 GeV Au+Au collisions at RHIC

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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