Particle production at very low transverse momenta in Au+Au collisions at {radical}(s{sub NN})=200 GeV
- Argonne National Laboratory, Argonne, Illinois 60439-4843 (United States)
- Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States); and others
We present results on charged particle production at very low transverse momenta in the 15% most central Au+Au collisions at {radical}(s{sub NN})=200 GeV obtained with the PHOBOS detector at the Relativistic Heavy Ion Collider. The invariant yields were measured at midrapidity in the transverse momentum ranges from 30 to 50 MeV/c for charged pions, 90 to 130 MeV/c for charged kaons and 140 to 210 MeV/c for protons and antiprotons. No significant enhancement in low transverse momentum particle production is observed as compared to extrapolations of identified particle spectra measured at an intermediate p{sub T} range. The spectra tend to flatten at low p{sub T}, consistent with the expectations of transverse expansion of the system.
- OSTI ID:
- 20695714
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevC.70.051901; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Identified hadron transverse momentum spectra in Au+Au collisions at {radical}(s{sub NN})=62.4 GeV
Identified Baryon and Meson Distributions at Large Transverse Momenta from Au+Au Collisions at {radical}(s{sub NN})=200 GeV