Evidence of Spin-Interference Effects in Exclusive J / ψ → e + e − Photoproduction in Ultraperipheral Heavy-Ion Collisions

Physical Review Letters 2026 Open access

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Authors: B. E. Aboona, J. Adam, L. Adamczyk, I. Aggarwal, M. M. Aggarwal, Z. Ahammed, A. K. Alshammri, E. C. Aschenauer, S. Aslam, J. Atchison, V. Bairathi, X. Bao
+88 more P. Barik, K. Barish, S. Behera, R. Bellwied, P. Bhagat, A. Bhasin, S. Bhatta, S. R. Bhosale, J. Bielcik, J. Bielcikova, J. D. Brandenburg, C. Broodo, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, J. Ceska, I. Chakaberia, P. Chaloupka, Y. S. Chang, Z. Chang, A. Chatterjee, D. Chen, J. H. Chen, L. Chen, Q. Chen, W. Chen, Z. Chen, J. Cheng, Y. Cheng, W. Christie, X. Chu, S. Corey, H. J. Crawford, M. Csanád, G. Dale-Gau, A. Das, D. De Souza Lemos, I. M. Deppner, A. Deshpande, A. Dhamija, A. Dimri, P. Dixit, X. Dong, J. L. Drachenberg, E. Duckworth, J. C. Dunlop, Y. S. El-Feky, J. Engelage, G. Eppley, S. Esumi, O. Evdokimov, O. Eyser, B. Fan, Y. Fang, R. Fatemi, S. Fazio, H. Feng, Y. Feng, E. Finch, Y. Fisyak, F. A. Flor, B. Fu, C. Fu, T. Fu, C. A. Gagliardi, T. Galatyuk, T. Gao, Y. Gao, G. Garcia, F. Geurts, A. Gibson, A. Giri, K. Gopal, X. Gou, D. Grosnick, A. Gu, J. Gu, A. Gupta, W. Guryn, A. Hamed, R. J. Hamilton, J. Han, X. Han, S. Harabasz, M. D. Harasty, J. W. Harris, H. Harrison-Smith
DOI: 10.1103/tcdb-ldh8
Cited by: 0

Abstract

We report the first evidence of spin interference in exclusive J/ψ→e^{+}e^{-} photoproduction in ultraperipheral heavy-ion collisions at STAR at sqrt[s_{NN}]=200 GeV. In Au+Au collisions, a negative cos(2ϕ) modulation is found for p_{T}

Fields of Study & Subjects

High-Energy Particle Collisions Research Quantum Chromodynamics and Particle Interactions Nuclear physics research studies

Publication details

Journal / source
Physical Review Letters
Volume
136
Issue
24
Pages
242302–242302
Publication date
24 April 2026
Language
EN