Welcome to RHIC News
We hope that this web publication will in some small measure reflect the excitement of the RHIC and AGS program at Brookhaven, as explained by some of the people who are doing the experiments, analyzing the data, and writing the papers.
The
Color Glass Condensate and the Glasma
By Larry McLerran
The HERA accelerator some years ago measured the gluon
distribution inside of protons. The surprising result was that
the measured number of gluons inside a fast moving proton was
rapidly rising as the energy increased. On the other hand, the
size of a proton is a very slowly increasing function of energy.
This means that the gluon density has to become large. More...
RHIC
AGS User’s Meeting 2008
By Abhay Deshpande
Friends and colleagues, the 2008 RHIC AGS User’s meeting dates
have changed since they were first declared. Please mark your
calendars: It will be held on May 27- May 30, 2008. The change
had to occur to avoid possible clashes with other meetings of
interest to our users, and we accept with apologies that it
starts immediately on the day after the Memorial Day. Anyone who
has tried to organize a meeting these days can attest that it
has become extremely difficult to avoid conflicts, sometimes
even impossible. We hope these new and final dates will conflict
minimally with the interests of RHIC AGS Users and you will
participate with your usual enthusiasm. More...
Highlights
from the 2008 Deuteron-Gold Run at PHENIX
By Mike Leitch
The PHENIX Collaboration has reached the end of a very
successful Deuteron-Gold (d+Au) run with over 80 nb-1 of
integrated luminosity representing 160 billion sampled
minimum-bias events at the end of the d+Au run on January 27th. This
exceeds our original luminosity goal of 58 nb-1 by about 40% and
is about 30 times larger than the 2.7 nb-1 obtained in the
previous (2003) d+Au run. Given improvements in the detectors
and in the shielding since 2003 and better control of beam
backgrounds – this data promises to become a new standard for
RHIC Cold Nuclear Matter (CNM) effects, and as the baseline for
heavy-ion collision data, for years to come.
More...
STAR
has a successful dAu Physics Run
By W.B. Christie
The STAR Collaboration / Experiment had a very successful FY08
deuteron on gold (dAu) Physics run. In addition to accumulating
a physics data set that we’re confident will produce exciting
and significant physics results, we successfully installed,
integrated, and took data with three new detector systems.
More...
First
Spin Results From the Polarized p+p Run at √s = 62.4 GeV: Single
Spin Asymmetries of Pions, Kaons, and Protons
By J. H. Lee
The BRAHMS collaboration has submitted a paper to Physical
Review Letters on the first spin results from the RHIC/Run-6
polarized proton run at √s = 62.4 GeV. The paper reports the
measurements of transverse Single Spin Asymmetries (SSAs) of
identified charged hadrons, π±, K±, and protons, from
transversely polarized proton-proton collisions. The
measurements extend to high Feynman-x, xF = 2pL/√s ∼ 0.6 by
utilizing the unique capability of the BRAHMS Forward
Spectrometer (FS) for measuring charged hadrons at the forward kinematic region with particle identification.
More...
Users' e-Log
Short news items of interest to the RHIC AGS community.
This week: FY08 budgets, Intel semifinalists, and the coffee
shop. More...
The Relativistic Heavy Ion Collider at Brookhaven National
Laboratory is a world-class scientific research facility primarily
funded by the U.S. Department of Energy Office of Science. Hundreds
of physicists from around the world use RHIC to study what the
universe may have looked like in the first few moments after its
creation. What physicists learn from these collisions may help us
understand more about why the physical world works the way it does,
from the smallest subatomic particles, to the largest stars.