EA Parton propagation and fragmentation
Our goal is to develop a program to explore parton propagation and fragmentation in a cold nucleus at the EIC. We should aim at
- A list of possible measurements
- Discussing new ideas and observables
- Develop or adapt existing Monte-Carlo simulations
- Perform simulations, and projections for EIC measurements
For each of our favorite observables, we should try and compare the performance of the JLab and BNL designs, in order to contribute in building the science case leading to the choice of the best one.
Our initial results will be presented at the Argonne and INT meetings and correspondingly summarized in 2 white papers, see #Timeline below.
In practice, and to kick-start our work, I suggest the following 3 steps
- Decide on a list of priorities
- Make a short list of priorities (each of us)
- Alberto will then collect them in a short document
- Take responsibility
- Stick names to the priorities
- Aim for preliminary results at Argonne, final in Seattle
- When a result is ready, provide a short write-up with plots and results for general discussion
We have set up weekly phone meetings, see here.
Results and Ongoing analyses
We are currently exploring light flavors, heavy flavors, jets and HBT correlation, with more waiting for to be picked up. Results and ongoing analyses can be accessed through our observables page.
Monte Carlo simulations
We need a range of Monte Carlo simulations of nuclear effects on parton prpagation and fragmentation, which allow us to simulate various phsyical ideas, and produce detailed projections for the various detectors and machines designs. Details on our Monte Carlo efforts can be found following the link below.
Our focus should be on the medium-energy EIC (MEIC@JLab or eRHIC stage 1), but it would be useful to evaluate how this program could be extended to a full-energy EIC, and wether the full-energy machine is necessary for our physics program, or this can be completed with the medium-energy machine. You can find her the luminosity vs. energy profile of either design can be found.
Then, we all should consider 2+1 main questions:
- What physics within your topic of interest can quantitatively be accomplished with the foreseen parameters?
- What physics within your topic of interest could quantitatively be accomplished with a change in the parameter space given, e.g. by a change in energies, a change in luminosity?
- Let's also keep in mind: will your physics likely be exhausted at the medium-energy EIC, or will it need also the full-energy EIC?
We want to complete our initial studies by the end of 2010 according to the timeline below, and to present our results first at the Argonne's "Nuclear Chromodynamics" workshop and then at the INT, Seattle, "The Science case for the EIC" workshop. Correspondingly we will contribute to 2 white papers. At the end of this first phase, we will evaluate how to continue.
- April 7-9: Nuclear Chromo-Dynamics workshop at Argonne
- June 7-9: JLab Users' meeting [report on Argonne's meeting]
- Summer: JLab Users' white paper
- Sep 27 - Oct 15: Matter under extreme conditions at the INT program on "Gluons and the quark sea at high energies"
- Nov 15-19: Workshop on "The Science Case for an EIC" at INT
- weeks 3-5: QCD Matter Under Extreme Conditions
- Winter: INT white paper on The Science Case for the EIC