Probing the Gluonic Structure of the Deuteron with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math> Photoproduction in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="italic">d</mml:mi><mml:mo>+</mml:mo><mml:mi>Au</mml:mi></mml:mrow></mml:math> Ultraperipheral Collisions
M. S. AbdallahAmerican University of Cairo, New Cairo 11835, New Cairo, EgyptB. E. AboonaTexas A&M University, College Station, Texas 77843J. AdamBrookhaven National Laboratory, Upton, New York 11973L. AdamczykAGH University of Science and Technology, FPACS, Cracow 30-059, PolandJ. R. AdamsOhio State University, Columbus, Ohio 43210J. K. AdkinsUniversity of Kentucky, Lexington, Kentucky 40506-0055G. AgakishievJoint Institute for Nuclear Research, Dubna 141 980, RussiaY. HuPanjab University, Chandigarh 160014, IndiaM. M. AggarwalPanjab University, Chandigarh 160014, IndiaZ. AhammedVariable Energy Cyclotron Centre, Kolkata 700064, IndiaA. AitbaevJoint Institute for Nuclear Research, Dubna 141 980, RussiaI. AlekseevAlikhanov Institute for Theoretical and Experimental Physics NRC “Kurchatov Institute”, Moscow 117218, RussiaD. M. AndersonTexas A&M University, College Station, Texas 77843A. AparinJoint Institute for Nuclear Research, Dubna 141 980, RussiaE. C. AschenauerBrookhaven National Laboratory, Upton, New York 11973M. U. AshrafCentral China Normal University, Wuhan, Hubei 430079F. G. AtetallaKent State University, Kent, Ohio 44242A. AttriPanjab University, Chandigarh 160014, IndiaG. S. AverichevJoint Institute for Nuclear Research, Dubna 141 980, RussiaV. BairathiInstituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, ChileW. BakerUniversity of California, Riverside, California 92521J. G. BallUniversity of Houston, Houston, Texas 77204K. N. BarishUniversity of California, Riverside, California 92521A. BeheraState University of New York, Stony Brook, New York 11794R. BellwiedUniversity of Houston, Houston, Texas 77204P. BhagatUniversity of Jammu, Jammu 180001, IndiaA. BhasinUniversity of Jammu, Jammu 180001, IndiaJ. BielčíkCzech Technical University in Prague, FNSPE, Prague 115 19, Czech RepublicJ. BielčíkováNuclear Physics Institute of the CAS, Rez 250 68, Czech RepublicI. G. BordyuzhinAlikhanov Institute for Theoretical and Experimental Physics NRC “Kurchatov Institute”, Moscow 117218, RussiaJ. D. BrandenburgBrookhaven National Laboratory, Upton, New York 11973A. V. BrandinNational Research Nuclear University MEPhI, Moscow 115409, RussiaI. BunzarovJoint Institute for Nuclear Research, Dubna 141 980, RussiaX. Z. CaiShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800H. CainesYale University, New Haven, Connecticut 06520M. Calderón de la Barca SánchezUniversity of California, Davis, California 95616D. CebraUniversity of California, Davis, California 95616I. ChakaberiaLawrence Berkeley National Laboratory, Berkeley, California 94720P. ChaloupkaCzech Technical University in Prague, FNSPE, Prague 115 19, Czech RepublicB. K. ChanUniversity of California, Los Angeles, California 90095F-H. ChangNational Cheng Kung University, Tainan 70101Z. ChangBrookhaven National Laboratory, Upton, New York 11973N. Chankova-BunzarovaJoint Institute for Nuclear Research, Dubna 141 980, RussiaA. ChatterjeeWarsaw University of Technology, Warsaw 00-661, PolandS. ChattopadhyayVariable Energy Cyclotron Centre, Kolkata 700064, IndiaD. ChenUniversity of California, Riverside, California 92521J. ChenFudan University, Shanghai, 200433J. H. ChenFudan University, Shanghai, 200433X. ChenUniversity of Science and Technology of China, Hefei, Anhui 230026Z. ChenShandong University, Qingdao, Shandong 266237J. ChengTsinghua University, Beijing 100084S. ChoudhuryFudan University, Shanghai, 200433W. ChristieBrookhaven National Laboratory, Upton, New York 11973X. ChuBrookhaven National Laboratory, Upton, New York 11973H. J. CrawfordUniversity of California, Berkeley, California 94720M. CsanádELTE Eötvös Loránd University, Budapest, Hungary H-1117M. DaugherityAbilene Christian University, Abilene, Texas 79699Т. Г. ДедовичJoint Institute for Nuclear Research, Dubna 141 980, RussiaI. M. DeppnerUniversity of Heidelberg, Heidelberg 69120, GermanyA. A. DerevschikovNRC “Kurchatov Institute”, Institute of High Energy Physics, Protvino 142281, RussiaA. DhamijaPanjab University, Chandigarh 160014, IndiaL. Di CarloWayne State University, Detroit, Michigan 48201L. DidenkoBrookhaven National Laboratory, Upton, New York 11973P. DixitIndian Institute of Science Education and Research (IISER), Berhampur 760010, IndiaX. DongLawrence Berkeley National Laboratory, Berkeley, California 94720J. L. DrachenbergAbilene Christian University, Abilene, Texas 79699E. DuckworthKent State University, Kent, Ohio 44242J. C. DunlopBrookhaven National Laboratory, Upton, New York 11973J. EngelageUniversity of California, Berkeley, California 94720G. EppleyRice University, Houston, Texas 77251S. EsumiUniversity of Tsukuba, Tsukuba, Ibaraki 305-8571, JapanO. EvdokimovUniversity of Illinois at Chicago, Chicago, Illinois 60607A. EwiglebenLehigh University, Bethlehem, Pennsylvania 18015O. EyserBrookhaven National Laboratory, Upton, New York 11973R. FatemiUniversity of Kentucky, Lexington, Kentucky 40506-0055F. M. FawziAmerican University of Cairo, New Cairo 11835, New Cairo, EgyptS. FazioUniversity of Calabria and INFN-Cosenza, ItalyP. FedericNuclear Physics Institute of the CAS, Rez 250 68, Czech RepublicJ. FedorišinJoint Institute for Nuclear Research, Dubna 141 980, RussiaC. FengNational Cheng Kung University, Tainan 70101Y. FengPurdue University, West Lafayette, Indiana 47907E. FinchSouthern Connecticut State University, New Haven, Connecticut 06515Y. FisyakBrookhaven National Laboratory, Upton, New York 11973A. FranciscoYale University, New Haven, Connecticut 06520C. FuCentral China Normal University, Wuhan, Hubei 430079C. A. GagliardiTexas A&M University, College Station, Texas 77843T. GalatyukTechnische Universität Darmstadt, Darmstadt 64289, GermanyF. J. M. GeurtsRice University, Houston, Texas 77251N. GhimireTemple University, Philadelphia, Pennsylvania 19122S. M. GibsonValparaiso University, Valparaiso, Indiana 46383K. GopalIndian Institute of Science Education and Research (IISER) Tirupati, Tirupati 517507, IndiaX. GouShandong University, Qingdao, Shandong 266237D. GrosnickValparaiso University, Valparaiso, Indiana 46383A. GuptaUniversity of Jammu, Jammu 180001, IndiaW. GurynBrookhaven National Laboratory, Upton, New York 11973A. HamedAmerican University of Cairo, New Cairo 11835, New Cairo, EgyptY. F. HanRice University, Houston, Texas 77251S. HarabaszTechnische Universität Darmstadt, Darmstadt 64289, GermanyM. D. HarastyUniversity of California, Davis, California 95616J. W. HarrisYale University, New Haven, Connecticut 06520
2022lv
ABI
Annotatsiya
Understanding gluon density distributions and how they are modified in nuclei are among the most important goals in nuclear physics. In recent years, diffractive vector meson production measured in ultraperipheral collisions (UPCs) at heavy-ion colliders has provided a new tool for probing the gluon density. In this Letter, we report the first measurement of $J/\ensuremath{\psi}$ photoproduction off the deuteron in UPCs at the center-of-mass energy $\sqrt{{s}_{\mathrm{NN}}}=200\text{ }\text{ }\mathrm{GeV}$ in $\mathit{d}+\mathrm{Au}$ collisions. The differential cross section as a function of momentum transfer $\ensuremath{-}t$ is measured. In addition, data with a neutron tagged in the deuteron-going zero-degree calorimeter is investigated for the first time, which is found to be consistent with the expectation of incoherent diffractive scattering at low momentum transfer. Theoretical predictions based on the color glass condensate saturation model and the leading twist approximation nuclear shadowing model are compared with the data quantitatively. A better agreement with the saturation model has been observed. With the current measurement, the results are found to be directly sensitive to the gluon density distribution of the deuteron and the deuteron breakup process, which provides insights into the nuclear gluonic structure.
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