Production of e(+)e(-) pairs accompanied by nuclear dissociation in ultraperipheral heavy-ion collisions Academic Article uri icon

abstract

  • 2004 The American Physical Society. We present data on e+e-pair production accompanied by nuclear breakup in ultraperipheral gold-gold collisions at a center of mass energy of 200 GeV per nucleon pair. The nuclear breakup requirement selects events at small impact parameters, where higher-order diagrams for pair production should be enhanced. We compare the data with two calculations: one based on the equivalent photon approximation, and the other using lowest-order quantum electrodynamics (QED). The data distributions agree with both calculations, except that the pair transverse momentum spectrum disagrees with the equivalent photon approach. We set limits on higher-order contributions to the cross section.

published proceedings

  • PHYSICAL REVIEW C

altmetric score

  • 4

author list (cited authors)

  • Adams, J., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., Arkhipkin, D., ... Zubarev, A. N.

citation count

  • 71

complete list of authors

  • Adams, J||Aggarwal, MM||Ahammed, Z||Amonett, J||Anderson, BD||Arkhipkin, D||Averichev, GS||Bai, Y||Balewski, J||Barannikova, O||Barnby, LS||Baudot, J||Bekele, S||Belaga, VV||Bellwied, R||Berger, J||Bezverkhny, BI||Bharadwaj, S||Bhatia, VS||Bichsel, H||Billmeier, A||Bland, LC||Blyth, CO||Bonner, BE||Botje, M||Boucham, A||Brandin, A||Bravar, A||Bystersky, M||Cadman, RV||Cai, XZ||Caines, H||Sanchez, MCD||Carroll, J||Castillo, J||Cebra, D||Chajecki, Z||Chaloupka, P||Chattopdhyay, S||Chen, HF||Chen, Y||Cheng, J||Cherney, M||Chikanian, A||Christie, W||Coffin, JP||Cormier, TM||Cramer, JG||Crawford, HJ||Das, D||Das, S||de Moura, MM||Derevschikov, AA||Didenko, L||Dietel, T||Dong, WJ||Dong, X||Draper, JE||Du, F||Dubey, AK||Dunin, VB||Dunlop, JC||Mazumdar, MRD||Eckardt, V||Edwards, WR||Efimov, LG||Emelianov, V||Engelage, J||Eppley, G||Erazmus, B||Estienne, M||Fachini, P||Faivre, J||Fatemi, R||Fedorisin, J||Filimonov, K||Filip, P||Finch, E||Fine, V||Fisyak, Y||Foley, KJ||Fomenko, K||Fu, J||Gagliardi, CA||Gans, J||Ganti,

publication date

  • September 2004