Coherent<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>ρ</mml:mi><mml:mn>0</mml:mn></mml:msup></mml:math>Production in Ultraperipheral Heavy-Ion Collisions
C. AdlerArgonne National Laboratory, Argonne, IL 60439, USAZ. AhammedPurdue University, West Lafayette, Indiana 47907C. AllgowerIndiana University, Bloomington, Indiana 47408J. AmonettKent State University, Kent, Ohio 44242B. D. AndersonKent State University, Kent, Ohio 44242M. AndersonUniversity of California, Davis, California 95616G. S. AverichevJ. BalewskiIndiana University, Bloomington, Indiana 47408O. BarannikovaLaboratory for High Energy (JINR), Dubna, RussiaL. S. BarnbyKent State University, Kent, Ohio 44242J. BaudotS. BekeleOhio State University, Columbus, Ohio 43210V. V. BelagaR. BellwiedWayne State University, Detroit, Michigan 48201J. BergerUniversity of Frankfurt, Frankfurt, GermanyH. BichselUniversity of Washington, Seattle, Washington 98195L. C. BlandBrookhaven National Laboratory, Upton, New York 11973C. O. BlythUniversity of Birmingham, Birmingham, United KingdomB. E. BonnerRice University, Houston, Texas 77251A. BouchamSUBATECH, Nantes, FranceA. V. BrandinMoscow Engineering Physics Institute, Moscow, RussiaA. BravarBrookhaven National Laboratory, Upton, New York 11973R. V. CadmanArgonne National Laboratory, Argonne, Illinois 60439X. Z. CaiOhio State University, Columbus, Ohio 43210M. Calderon De La Barca SanchezBrookhaven National Laboratory, Upton, New York 11973A. CardenasPurdue University, West Lafayette, Indiana 47907J. T. CarrollLawrence Berkeley National Laboratory, Berkeley, California 94720J. Castillo CastellanosSUBATECH, Nantes, FranceM. CastroWayne State University, Detroit, Michigan 48201D. CebraUniversity of California, Davis, California 95616P. ChaloupkaOhio State University, Columbus, Ohio 43210S. ChattopadhyayWayne State University, Detroit, Michigan 48201Y. ChenUniversity of California, Los Angeles, California 90095S. ChernenkoM. CherneyCreighton University, Omaha, Nebraska 68178A. ChikanianYale University, New Haven, Connecticut 06520B. ChoiUniversity of Texas, Austin, Texas 78712W. ChristieBrookhaven National Laboratory, Upton, New York 11973J. P. CoffinT. M. CormierWayne State University, Detroit, Michigan 48201J. G. CramerUniversity of Washington, Seattle, Washington 98195H. J. CrawfordUniversity of California, Berkeley, California 94720W. S. DengBrookhaven National Laboratory, Upton, New York 11973A. A. DerevschikovInstitute of High Energy Physics, Protvino, RussiaL. DidenkoBrookhaven National Laboratory, Upton, New York 11973T. DietelUniversity of Frankfurt, Frankfurt, GermanyJ. E. DraperUniversity of California, Davis, California 95616V. B. DuninJ. C. DunlopYale University, New Haven, Connecticut 06520V. EckardtMax-Planck-Institut für Physik, Munich, GermanyL. G. EfimovВ. ЕмеляновMoscow Engineering Physics Institute, Moscow, RussiaJ. EngelageUniversity of California, Berkeley, California 94720G. EppleyRice University, Houston, Texas 77251B. ErazmusSUBATECH, Nantes, FranceP. FachiniBrookhaven National Laboratory, Upton, New York 11973V. FaineBrookhaven National Laboratory, Upton, New York 11973K. FilimonovLawrence Berkeley National Laboratory, Berkeley, California 94720E. FinchYale University, New Haven, Connecticut 06520Y. FisyakBrookhaven National Laboratory, Upton, New York 11973D. FlierlUniversity of Frankfurt, Frankfurt, GermanyK. J. FoleyBrookhaven National Laboratory, Upton, New York 11973J. FuInstitute of Particle Physics, CCNU (HZNU), Wuhan 430079, ChinaC. A. GagliardiTexas A&M, College Station, Texas 77843N. GagunashviliJ. GansYale University, New Haven, Connecticut 06520L. GaudichetSUBATECH, Nantes, FranceM. GermainF. J. M. GeurtsRice University, Houston, Texas 77251V. GhazikhanianUniversity of California, Los Angeles, California 90095O. GrachovWayne State University, Detroit, Michigan 48201V. GrigorievMoscow Engineering Physics Institute, Moscow, RussiaM. GuedonE. GushinMoscow Engineering Physics Institute, Moscow, RussiaT. J. HallmanBrookhaven National Laboratory, Upton, New York 11973D. HardtkeLawrence Berkeley National Laboratory, Berkeley, California 94720J. W. HarrisYale University, New Haven, Connecticut 06520T. W. HenryTexas A&M, College Station, Texas 77843S. HeppelmannPennsylvania State University, University Park, Pennsylvania 16802T. HerstonPurdue University, West Lafayette, Indiana 47907B. HippolyteA. HirschPurdue University, West Lafayette, Indiana 47907E. HjortLawrence Berkeley National Laboratory, Berkeley, California 94720G. W. HoffmannUniversity of Texas, Austin, Texas 78712M. HorsleyYale University, New Haven, Connecticut 06520H. Z. HuangUniversity of California, Los Angeles, California 90095T. J. HumanicOhio State University, Columbus, Ohio 43210G. IgoUniversity of California, Los Angeles, California 90095A. IshiharaUniversity of Texas, Austin, Texas 78712Yu. I. IvanshinP. JacobsLawrence Berkeley National Laboratory, Berkeley, California 94720W. W. JacobsIndiana University, Bloomington, Indiana 47408M. A. JanikWarsaw University of Technology, Warsaw, PolandI. JohnsonLawrence Berkeley National Laboratory, Berkeley, California 94720Peter G. JonesUniversity of Birmingham, Birmingham, United KingdomE. G. JuddUniversity of California, Berkeley, California 94720M. KanetaLawrence Berkeley National Laboratory, Berkeley, California 94720M. KaplanCarnegie Mellon University, Pittsburgh, Pennsylvania 15213D. KeaneKent State University, Kent, Ohio 44242J. KirylukUniversity of California, Los Angeles, California 90095
2002lv
ABI
Аннотация
The STAR Collaboration reports the first observation of exclusive ${\ensuremath{\rho}}^{0}$ photoproduction, $\mathrm{A}\mathrm{u}\mathrm{A}\mathrm{u}\ensuremath{\rightarrow}\mathrm{A}\mathrm{u}\mathrm{A}\mathrm{u}{\ensuremath{\rho}}^{0}$, and ${\ensuremath{\rho}}^{0}$ production accompanied by mutual nuclear Coulomb excitation, $\mathrm{A}\mathrm{u}\mathrm{A}\mathrm{u}\ensuremath{\rightarrow}\mathrm{A}{\mathrm{u}}^{\mathrm{\ensuremath{\star}}}\mathrm{A}{\mathrm{u}}^{\mathrm{\ensuremath{\star}}}{\ensuremath{\rho}}^{0}$, in ultraperipheral heavy-ion collisions. The ${\ensuremath{\rho}}^{0}$ have low transverse momenta, consistent with coherent coupling to both nuclei. The cross sections at $\sqrt{{s}_{NN}}=130\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$ agree with theoretical predictions treating ${\ensuremath{\rho}}^{0}$ production and Coulomb excitation as independent processes.
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