965 resultados para National Science Foundation (U.S.). Office of Science Information Service.


Relevância:

100.00% 100.00%

Publicador:

Resumo:

Fifth annual report of the National Science Board.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p + p collisions at root s = 200 GeV performed by the PHENIX Experiment at the Relativistic Heavy Ion Collider. The J/psi polarization is studied in the helicity, Gottfried-Jackson, and Collins-Soper frames for p(T) < 5 GeV/c and vertical bar y vertical bar < 0.35. The polarization in the helicity and Gottfried-Jackson frames is consistent with zero for all transverse momenta, with a slight (1.8 sigma) trend towards longitudinal polarization for transverse momenta above 2 GeV/c. No conclusion is allowed due to the limited acceptance in the Collins-Soper frame and the uncertainties of the current data. The results are compared to observations for other collision systems and center of mass energies and to different quarkonia production models.

Relevância:

100.00% 100.00%

Publicador:

Resumo:

Audit report on the Iowa State Center Business Office of Iowa State University of Science and Technology for the year ended June 30, 2007