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Title: Observation of Excess J / ψ Yield at Very Low Transverse Momenta in Au + Au Collisions at s N N = 200 GeV and U + U Collisions at s N N = 193 GeV

Abstract

We report on the first measurements of J/ψ production at very low transverse momentum ($$p_T <$$ 0.2 GeV/c) in hadronic Au + Au collisions at $$\sqrt{s_{NN}} =$$ 200 GeV and U + U collisions at $$\sqrt{s_{NN}} =$$ 193 GeV. Remarkably, the inferred nuclear modification factor of J/ψ at midrapidity in Au + Au (U + U) collisions reaches about 24 (52) for $$p_T <$$ 0.05 GeV/c in the 60%–80% collision centrality class. This noteworthy enhancement cannot be explained by hadronic production accompanied by cold and hot medium effects. In addition, the dN/dt distribution of J/ψ for the very low $$p_T$$ range is presented for the first time. The distribution is consistent with that expected from the Au nucleus and shows a hint of interference. Comparison of the measurements to theoretical calculations of coherent production shows that the excess yield can be described reasonably well and reveals a partial disruption of coherent production in semicentral collisions, perhaps due to the violent hadronic interactions. Incorporating theoretical calculations, the results strongly suggest that the dramatic enhancement of J/ψ yield observed at extremely low $$p_T$$ originates from coherent photon-nucleus interactions. In particular, coherently produced J/ψ’s in violent hadronic collisions may provide a novel probe of the quark-gluon plasma.

Authors:
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Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Texas A & M Univ., College Station, TX (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Ministry of Education and Science of the Russian Federation; National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS); Ministry of Science and Technology of the People’s Republic of China; Ministry of Education of China; National Research Foundation of Korea (NRF); Czech Science Foundation (GACR); Ministry of Education, Youth and Sports of the Czech Republic; Hungarian National Research, Development and Innovation Office (NRDI); Hungarian Ministry of Human Capacities; Government of India; National Science Centre of Poland (NCN); Ministry of Science, Education and Sports of the Republic of Croatia; ROSATOM of Russia; German Federal Ministry of Education and Research (BMBF)
Contributing Org.:
STAR Collaboration
OSTI Identifier:
1566931
Alternate Identifier(s):
OSTI ID: 1523247; OSTI ID: 1594832; OSTI ID: 1616089; OSTI ID: 1787584
Report Number(s):
BNL-211606-2019-JAAM
Journal ID: ISSN 0031-9007; PRLTAO; 132302
Grant/Contract Number:  
SC0017982; SC0012704; AC02-05CH11231; SC0015636
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 123 Journal Issue: 13; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Jets and heavy flavor physics; Quark-gluon plasma

Citation Formats

Adam, J., Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Atetalla, F., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Bassill, A. J., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bryslawskyj, J., Bunzarov, I., Butterworth, J., Caines, H., Sánchez, M. Calderón de la Barca, Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Crawford, H. J., Csanad, M., Das, S., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Grosnick, D., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Herrmann, N., Holub, L., Hong, Y., Horvat, S., Huang, B., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jentsch, A., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Kikoła, D. P., Kim, C., Kinghorn, T. A., Kisel, I., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Mudiyanselage, N. Kulathunga, Kumar, L., Elayavalli, R. Kunnawalkam, Kwasizur, J. H., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lipiec, A., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, P., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Matonoha, O., Mazer, J. A., Meehan, K., Mei, J. C., Minaev, N. G., Mioduszewski, S., Mishra, D., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nasim, Md., Nayak, K., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, K., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Pinter, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Schambach, J., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Siejka, S., Sikora, R., Simko, M., JSingh,, Singha, S., Smirnov, D., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Todoroki, T., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, B., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, P., Wang, Y., Wang, Y., Webb, J. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Ye, Z., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, L., Zhang, S., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M. K., Zyzak, M., and STAR Collaboration. Observation of Excess J / ψ Yield at Very Low Transverse Momenta in Au + Au Collisions at s N N = 200     GeV and U + U Collisions at s N N = 193     GeV. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.132302.
Adam, J., Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Atetalla, F., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Bassill, A. J., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bryslawskyj, J., Bunzarov, I., Butterworth, J., Caines, H., Sánchez, M. Calderón de la Barca, Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Crawford, H. J., Csanad, M., Das, S., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Grosnick, D., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Herrmann, N., Holub, L., Hong, Y., Horvat, S., Huang, B., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jentsch, A., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Kikoła, D. P., Kim, C., Kinghorn, T. A., Kisel, I., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Mudiyanselage, N. Kulathunga, Kumar, L., Elayavalli, R. Kunnawalkam, Kwasizur, J. H., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lipiec, A., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, P., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Matonoha, O., Mazer, J. A., Meehan, K., Mei, J. C., Minaev, N. G., Mioduszewski, S., Mishra, D., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nasim, Md., Nayak, K., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, K., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Pinter, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Schambach, J., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Siejka, S., Sikora, R., Simko, M., JSingh,, Singha, S., Smirnov, D., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Todoroki, T., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, B., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, P., Wang, Y., Wang, Y., Webb, J. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Ye, Z., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, L., Zhang, S., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M. K., Zyzak, M., & STAR Collaboration. Observation of Excess J / ψ Yield at Very Low Transverse Momenta in Au + Au Collisions at s N N = 200     GeV and U + U Collisions at s N N = 193     GeV. United States. https://doi.org/10.1103/PhysRevLett.123.132302
Adam, J., Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Alekseev, I., Anderson, D. M., Aoyama, R., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Ashraf, M. U., Atetalla, F., Attri, A., Averichev, G. S., Bairathi, V., Barish, K., Bassill, A. J., Behera, A., Bellwied, R., Bhasin, A., Bhati, A. K., Bielcik, J., Bielcikova, J., Bland, L. C., Bordyuzhin, I. G., Brandenburg, J. D., Brandin, A. V., Bryslawskyj, J., Bunzarov, I., Butterworth, J., Caines, H., Sánchez, M. Calderón de la Barca, Cebra, D., Chakaberia, I., Chaloupka, P., Chan, B. K., Chang, F-H., Chang, Z., Chankova-Bunzarova, N., Chatterjee, A., Chattopadhyay, S., Chen, J. H., Chen, X., Cheng, J., Cherney, M., Christie, W., Crawford, H. J., Csanad, M., Das, S., Dedovich, T. G., Deppner, I. M., Derevschikov, A. A., Didenko, L., Dilks, C., Dong, X., Drachenberg, J. L., Dunlop, J. C., Edmonds, T., Elsey, N., Engelage, J., Eppley, G., Esha, R., Esumi, S., Evdokimov, O., Ewigleben, J., Eyser, O., Fatemi, R., Fazio, S., Federic, P., Fedorisin, J., Feng, Y., Filip, P., Finch, E., Fisyak, Y., Fulek, L., Gagliardi, C. A., Galatyuk, T., Geurts, F., Gibson, A., Grosnick, D., Gupta, A., Guryn, W., Hamad, A. I., Hamed, A., Harris, J. W., He, L., Heppelmann, S., Heppelmann, S., Herrmann, N., Holub, L., Hong, Y., Horvat, S., Huang, B., Huang, H. Z., Huang, S. L., Huang, T., Huang, X., Humanic, T. J., Huo, P., Igo, G., Jacobs, W. W., Jentsch, A., Jia, J., Jiang, K., Jowzaee, S., Ju, X., Judd, E. G., Kabana, S., Kagamaster, S., Kalinkin, D., Kang, K., Kapukchyan, D., Kauder, K., Ke, H. W., Keane, D., Kechechyan, A., Kelsey, M., Kikoła, D. P., Kim, C., Kinghorn, T. A., Kisel, I., Kisiel, A., Kocan, M., Kochenda, L., Kosarzewski, L. K., Kramarik, L., Kravtsov, P., Krueger, K., Mudiyanselage, N. Kulathunga, Kumar, L., Elayavalli, R. Kunnawalkam, Kwasizur, J. H., Lacey, R., Landgraf, J. M., Lauret, J., Lebedev, A., Lednicky, R., Lee, J. H., Li, C., Li, W., Li, W., Li, X., Li, Y., Liang, Y., Licenik, R., Lin, T., Lipiec, A., Lisa, M. A., Liu, F., Liu, H., Liu, P., Liu, P., Liu, X., Liu, Y., Liu, Z., Ljubicic, T., Llope, W. J., Lomnitz, M., Longacre, R. S., Luo, S., Luo, X., Ma, G. L., Ma, L., Ma, R., Ma, Y. G., Magdy, N., Majka, R., Mallick, D., Margetis, S., Markert, C., Matis, H. S., Matonoha, O., Mazer, J. A., Meehan, K., Mei, J. C., Minaev, N. G., Mioduszewski, S., Mishra, D., Mohanty, B., Mondal, M. M., Mooney, I., Moravcova, Z., Morozov, D. A., Nasim, Md., Nayak, K., Nelson, J. M., Nemes, D. B., Nie, M., Nigmatkulov, G., Niida, T., Nogach, L. V., Nonaka, T., Odyniec, G., Ogawa, A., Oh, K., Oh, S., Okorokov, V. A., Page, B. S., Pak, R., Panebratsev, Y., Pawlik, B., Pei, H., Perkins, C., Pinter, R. L., Pluta, J., Porter, J., Posik, M., Pruthi, N. K., Przybycien, M., Putschke, J., Quintero, A., Radhakrishnan, S. K., Ramachandran, S., Ray, R. L., Reed, R., Ritter, H. G., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Rusnak, J., Rusnakova, O., Sahoo, N. R., Sahu, P. K., Salur, S., Sandweiss, J., Schambach, J., Schmidke, W. B., Schmitz, N., Schweid, B. R., Seck, F., Seger, J., Sergeeva, M., Seto, R., Seyboth, P., Shah, N., Shahaliev, E., Shanmuganathan, P. V., Shao, M., Shen, F., Shen, W. Q., Shi, S. S., Shou, Q. Y., Sichtermann, E. P., Siejka, S., Sikora, R., Simko, M., JSingh,, Singha, S., Smirnov, D., Smirnov, N., Solyst, W., Sorensen, P., Spinka, H. M., Srivastava, B., Stanislaus, T. D. S., Stewart, D. J., Strikhanov, M., Stringfellow, B., Suaide, A. A. P., Sugiura, T., Sumbera, M., Summa, B., Sun, X. M., Sun, Y., Sun, Y., Surrow, B., Svirida, D. N., Szymanski, P., Tang, A. H., Tang, Z., Taranenko, A., Tarnowsky, T., Thomas, J. H., Timmins, A. R., Todoroki, T., Tokarev, M., Tomkiel, C. A., Trentalange, S., Tribble, R. E., Tribedy, P., Tripathy, S. K., Tsai, O. D., Tu, B., Ullrich, T., Underwood, D. G., Upsal, I., Van Buren, G., Vanek, J., Vasiliev, A. N., Vassiliev, I., Videbæk, F., Vokal, S., Voloshin, S. A., Wang, F., Wang, G., Wang, P., Wang, Y., Wang, Y., Webb, J. C., Wen, L., Westfall, G. D., Wieman, H., Wissink, S. W., Witt, R., Wu, Y., Xiao, Z. G., Xie, G., Xie, W., Xu, H., Xu, N., Xu, Q. H., Xu, Y. F., Xu, Z., Yang, C., Yang, Q., Yang, S., Yang, Y., Ye, Z., Ye, Z., Yi, L., Yip, K., Yoo, I. -K., Zbroszczyk, H., Zha, W., Zhang, D., Zhang, L., Zhang, S., Zhang, S., Zhang, X. P., Zhang, Y., Zhang, Z., Zhao, J., Zhong, C., Zhou, C., Zhu, X., Zhu, Z., Zurek, M. K., Zyzak, M., and STAR Collaboration. Fri . "Observation of Excess J / ψ Yield at Very Low Transverse Momenta in Au + Au Collisions at s N N = 200     GeV and U + U Collisions at s N N = 193     GeV". United States. https://doi.org/10.1103/PhysRevLett.123.132302.
@article{osti_1566931,
title = {Observation of Excess J / ψ Yield at Very Low Transverse Momenta in Au + Au Collisions at s N N = 200     GeV and U + U Collisions at s N N = 193     GeV},
author = {Adam, J. and Adamczyk, L. and Adams, J. R. and Adkins, J. K. and Agakishiev, G. and Aggarwal, M. M. and Ahammed, Z. and Alekseev, I. and Anderson, D. M. and Aoyama, R. and Aparin, A. and Arkhipkin, D. and Aschenauer, E. C. and Ashraf, M. U. and Atetalla, F. and Attri, A. and Averichev, G. S. and Bairathi, V. and Barish, K. and Bassill, A. J. and Behera, A. and Bellwied, R. and Bhasin, A. and Bhati, A. K. and Bielcik, J. and Bielcikova, J. and Bland, L. C. and Bordyuzhin, I. G. and Brandenburg, J. D. and Brandin, A. V. and Bryslawskyj, J. and Bunzarov, I. and Butterworth, J. and Caines, H. and Sánchez, M. Calderón de la Barca and Cebra, D. and Chakaberia, I. and Chaloupka, P. and Chan, B. K. and Chang, F-H. and Chang, Z. and Chankova-Bunzarova, N. and Chatterjee, A. and Chattopadhyay, S. and Chen, J. H. and Chen, X. and Cheng, J. and Cherney, M. and Christie, W. and Crawford, H. J. and Csanad, M. and Das, S. and Dedovich, T. G. and Deppner, I. M. and Derevschikov, A. A. and Didenko, L. and Dilks, C. and Dong, X. and Drachenberg, J. L. and Dunlop, J. C. and Edmonds, T. and Elsey, N. and Engelage, J. and Eppley, G. and Esha, R. and Esumi, S. and Evdokimov, O. and Ewigleben, J. and Eyser, O. and Fatemi, R. and Fazio, S. and Federic, P. and Fedorisin, J. and Feng, Y. and Filip, P. and Finch, E. and Fisyak, Y. and Fulek, L. and Gagliardi, C. A. and Galatyuk, T. and Geurts, F. and Gibson, A. and Grosnick, D. and Gupta, A. and Guryn, W. and Hamad, A. I. and Hamed, A. and Harris, J. W. and He, L. and Heppelmann, S. and Heppelmann, S. and Herrmann, N. and Holub, L. and Hong, Y. and Horvat, S. and Huang, B. and Huang, H. Z. and Huang, S. L. and Huang, T. and Huang, X. and Humanic, T. J. and Huo, P. and Igo, G. and Jacobs, W. W. and Jentsch, A. and Jia, J. and Jiang, K. and Jowzaee, S. and Ju, X. and Judd, E. G. and Kabana, S. and Kagamaster, S. and Kalinkin, D. and Kang, K. and Kapukchyan, D. and Kauder, K. and Ke, H. W. and Keane, D. and Kechechyan, A. and Kelsey, M. and Kikoła, D. P. and Kim, C. and Kinghorn, T. A. and Kisel, I. and Kisiel, A. and Kocan, M. and Kochenda, L. and Kosarzewski, L. K. and Kramarik, L. and Kravtsov, P. and Krueger, K. and Mudiyanselage, N. Kulathunga and Kumar, L. and Elayavalli, R. Kunnawalkam and Kwasizur, J. H. and Lacey, R. and Landgraf, J. M. and Lauret, J. and Lebedev, A. and Lednicky, R. and Lee, J. H. and Li, C. and Li, W. and Li, W. and Li, X. and Li, Y. and Liang, Y. and Licenik, R. and Lin, T. and Lipiec, A. and Lisa, M. A. and Liu, F. and Liu, H. and Liu, P. and Liu, P. and Liu, X. and Liu, Y. and Liu, Z. and Ljubicic, T. and Llope, W. J. and Lomnitz, M. and Longacre, R. S. and Luo, S. and Luo, X. and Ma, G. L. and Ma, L. and Ma, R. and Ma, Y. G. and Magdy, N. and Majka, R. and Mallick, D. and Margetis, S. and Markert, C. and Matis, H. S. and Matonoha, O. and Mazer, J. A. and Meehan, K. and Mei, J. C. and Minaev, N. G. and Mioduszewski, S. and Mishra, D. and Mohanty, B. and Mondal, M. M. and Mooney, I. and Moravcova, Z. and Morozov, D. A. and Nasim, Md. and Nayak, K. and Nelson, J. M. and Nemes, D. B. and Nie, M. and Nigmatkulov, G. and Niida, T. and Nogach, L. V. and Nonaka, T. and Odyniec, G. and Ogawa, A. and Oh, K. and Oh, S. and Okorokov, V. A. and Page, B. S. and Pak, R. and Panebratsev, Y. and Pawlik, B. and Pei, H. and Perkins, C. and Pinter, R. L. and Pluta, J. and Porter, J. and Posik, M. and Pruthi, N. K. and Przybycien, M. and Putschke, J. and Quintero, A. and Radhakrishnan, S. K. and Ramachandran, S. and Ray, R. L. and Reed, R. and Ritter, H. G. and Roberts, J. B. and Rogachevskiy, O. V. and Romero, J. L. and Ruan, L. and Rusnak, J. and Rusnakova, O. and Sahoo, N. R. and Sahu, P. K. and Salur, S. and Sandweiss, J. and Schambach, J. and Schmidke, W. B. and Schmitz, N. and Schweid, B. R. and Seck, F. and Seger, J. and Sergeeva, M. and Seto, R. and Seyboth, P. and Shah, N. and Shahaliev, E. and Shanmuganathan, P. V. and Shao, M. and Shen, F. and Shen, W. Q. and Shi, S. S. and Shou, Q. Y. and Sichtermann, E. P. and Siejka, S. and Sikora, R. and Simko, M. and JSingh, and Singha, S. and Smirnov, D. and Smirnov, N. and Solyst, W. and Sorensen, P. and Spinka, H. M. and Srivastava, B. and Stanislaus, T. D. S. and Stewart, D. J. and Strikhanov, M. and Stringfellow, B. and Suaide, A. A. P. and Sugiura, T. and Sumbera, M. and Summa, B. and Sun, X. M. and Sun, Y. and Sun, Y. and Surrow, B. and Svirida, D. N. and Szymanski, P. and Tang, A. H. and Tang, Z. and Taranenko, A. and Tarnowsky, T. and Thomas, J. H. and Timmins, A. R. and Todoroki, T. and Tokarev, M. and Tomkiel, C. A. and Trentalange, S. and Tribble, R. E. and Tribedy, P. and Tripathy, S. K. and Tsai, O. D. and Tu, B. and Ullrich, T. and Underwood, D. G. and Upsal, I. and Van Buren, G. and Vanek, J. and Vasiliev, A. N. and Vassiliev, I. and Videbæk, F. and Vokal, S. and Voloshin, S. A. and Wang, F. and Wang, G. and Wang, P. and Wang, Y. and Wang, Y. and Webb, J. C. and Wen, L. and Westfall, G. D. and Wieman, H. and Wissink, S. W. and Witt, R. and Wu, Y. and Xiao, Z. G. and Xie, G. and Xie, W. and Xu, H. and Xu, N. and Xu, Q. H. and Xu, Y. F. and Xu, Z. and Yang, C. and Yang, Q. and Yang, S. and Yang, Y. and Ye, Z. and Ye, Z. and Yi, L. and Yip, K. and Yoo, I. -K. and Zbroszczyk, H. and Zha, W. and Zhang, D. and Zhang, L. and Zhang, S. and Zhang, S. and Zhang, X. P. and Zhang, Y. and Zhang, Z. and Zhao, J. and Zhong, C. and Zhou, C. and Zhu, X. and Zhu, Z. and Zurek, M. K. and Zyzak, M. and STAR Collaboration},
abstractNote = {We report on the first measurements of J/ψ production at very low transverse momentum ($p_T <$ 0.2 GeV/c) in hadronic Au + Au collisions at $\sqrt{s_{NN}} =$ 200 GeV and U + U collisions at $\sqrt{s_{NN}} =$ 193 GeV. Remarkably, the inferred nuclear modification factor of J/ψ at midrapidity in Au + Au (U + U) collisions reaches about 24 (52) for $p_T <$ 0.05 GeV/c in the 60%–80% collision centrality class. This noteworthy enhancement cannot be explained by hadronic production accompanied by cold and hot medium effects. In addition, the dN/dt distribution of J/ψ for the very low $p_T$ range is presented for the first time. The distribution is consistent with that expected from the Au nucleus and shows a hint of interference. Comparison of the measurements to theoretical calculations of coherent production shows that the excess yield can be described reasonably well and reveals a partial disruption of coherent production in semicentral collisions, perhaps due to the violent hadronic interactions. Incorporating theoretical calculations, the results strongly suggest that the dramatic enhancement of J/ψ yield observed at extremely low $p_T$ originates from coherent photon-nucleus interactions. In particular, coherently produced J/ψ’s in violent hadronic collisions may provide a novel probe of the quark-gluon plasma.},
doi = {10.1103/PhysRevLett.123.132302},
journal = {Physical Review Letters},
number = 13,
volume = 123,
place = {United States},
year = {Fri Sep 27 00:00:00 EDT 2019},
month = {Fri Sep 27 00:00:00 EDT 2019}
}

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https://doi.org/10.1103/PhysRevLett.123.132302

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Figures / Tables:

FIG. 1 FIG. 1: The dielectron invariant mass spectrum for the 40%– 80% centrality class in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (a) and in U + U collisions at $\sqrt{s_{NN}}$ = 193 GeV (b). The error bars are the statistical uncertainties. The fitting curves are described in themore » text.« less

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Coherent <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:math> photoproduction in ultra-peripheral Pb–Pb collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">NN</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math>
journal, January 2013


Energy dependence of J/ψ production in Au + Au collisions at s N N = 39 , 62.4  and  200 GeV
journal, August 2017


Coherent J / ψ photoproduction in hadronic heavy-ion collisions
journal, April 2018


Exclusive J/ψ production in ultraperipheral collisions at the LHC: constraints on the gluon distributions in the proton and nuclei
journal, October 2013


Diffractive heavy quarkonium photoproduction and electroproduction in QCD
journal, January 1998

  • Frankfurt, Leonid; Koepf, Werner; Strikman, Mark
  • Physical Review D, Vol. 57, Issue 1
  • DOI: 10.1103/PhysRevD.57.512

The order of the quantum chromodynamics transition predicted by the standard model of particle physics
journal, October 2006


J/ψ and ψ′ production in p, O and S induced reactions at SPS energies
journal, November 1999


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.