Exclusive vector meson production in relativistic heavy ion collisions
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Exclusive vector meson production reactions such as Au+Au{r_arrow}Au+Au+V, where V={rho}, {omega}, {phi}, or J/{psi}, can proceed through photon-Pomeron and photon-meson interactions. Photons from the electromagnetic field of one nucleus interact coherently with the other nucleus. Photonuclear cross sections are scaled from {gamma}p data and convoluted with the photon spectrum to find the exclusive rates. The cross sections at the RHIC and LHC heavy ion colliders are huge, 10{percent} of the total hadronic cross section at RHIC and 50{percent} at LHC. These accelerators may be useful as vector meson factories. With iodine beams at RHIC, 640 {rho} are produced each second (10{sup 10}/yr); with calcium at the LHC the rate is 240 kHz. The {phi} rates are 39 Hz at RHIC and 15 kHz at LHC, while the J/{psi} rate is 0.3 Hz at RHIC and 780 Hz at the LHC. Because of the coherent couplings, the reactions kinematics are similar to coherent two-photon interactions; we discuss the interplay between the two reactions. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 351917
- Journal Information:
- Physical Review, C, Vol. 60, Issue 1; Other Information: PBD: Jul 1999
- Country of Publication:
- United States
- Language:
- English
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