Difference between revisions of "EA Parton propagation and fragmentation"
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Our initial results will be presented at the Argonne and INT meetings and correspondingly summarized in 2 white papers, see [[#Timeline]] below.  Our initial results will be presented at the Argonne and INT meetings and correspondingly summarized in 2 white papers, see [[#Timeline]] below.  
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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.  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.  
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Revision as of 14:20, 19 February 2010
Contents 
Goals
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
 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
In practice, and to kickstart 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
 Work!
 Aim for preliminary results at Argonne, final in Seattle
 When a result is ready, provide a short writeup with plots and results for general discussion
We will soon set up weekly phone meetings.
Resources
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.
Machine designs
Our focus should be on the mediumenergy EIC (MEIC@JLab or MeRHIC), but it would be useful to evaluate how this program could be extended to a fullenergy EIC, and wether the fullenergy machine is necessary for our physics program, or this can be completed with the mediumenergy machine.
I note here the main machine designs currently under consideration for quick reference and to standardize our studies
EICI (Mediumenergy EIC)
 [JLab] Failed to parse (unknown error): E=3+30 \ L=40\times 10^{33}
 [JLab] Failed to parse (unknown error): E=11+30 \ L=0.4\times 10^{33}
 [BNL] Failed to parse (unknown error): E=4+100 \ L=0.1\times 10^{33}
EICII (Fullenergy EIC)
 [JLab] Failed to parse (unknown error): E=11+120 \ L=10\times 10^{33}
 [BNL] Failed to parse (unknown error): E=20+130 \ L=2.8 \times 10^{33}
However, feel free to explore nonstandard scenarios that can optimize the physics output. Examples are
 A possible doubling of electron energy to, say, 22 GeV with luminosity reduced by apprixmately a factor 10
 A super highenergy eRHIC with E=30+320
More details can be found here.
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 EICI, or wil it need also the fullenergy EICII?
Resources
Timeline
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.
2010
 April 79: Nuclear ChromoDynamics workshop at Argonne
 June 79: JLab Users' meeting [report on Argonne's meeting]
 Summer: JLab Users' white paper
 Nov 1519: Workshop on "The Science Case for an EIC" at INT
 Winter: INT white paper on The Science Case for the EIC
Resources & links
