Hi Aaron,
In d(e,e'n) we find a shift of the missing mass peak of 25-30 MeV towards
higher values.
Just a brief question. Where is your missing mass peak exactly located, in
the original crunched data, and in the recrunched data?
Also, I'd like to know the location for peak of the photon-nucleon
invariant mass W_N:
sqrt((omega+0.938)^2-q^2). In quasifree scattering this should peak at
the nucleon mass (modulo correction for the separation energy). Is it
shifted by the same amount like the missing mass (which is the case in
d(e,e'n)?
A too large missing mass caused by too large omega corresponds to a too
large missing momentum as well.
Thanks,
Michael
On Fri, 1 Oct 2004, Aaron Joseph Maschinot wrote:
>
> sure, it's no Gen or T20, but it's got teeth.
>
> attached is a copy of the d(e,e'p)n asymmetry vs pm that i've been working
> on. a picture very similar to this (one that will include projected
> error bars) is what i will show in trieste.
>
> the data in this plot has had the dilution divided out of it (as opposed
> to having the theoretical models all scaled up by the dilution). so you
> are actually able to compare pure asymmetries, not dilution * asymmetries
> or whatnot.
>
> the plot shows good agreement between the data and the "total" model (i.e.
> bonn + meson exchange currents + isobar configurations + relativistic
> effects). such distinctions between models is only possible at pm >=
> 0.35GeV or so.
>
> this plot (showing the various models) is possible due to the new monte
> carlo formalism. the fact that i get so pretty of a picture helps affirm
> the validity of the new formalism. remember that the new monte carlo
> formalism DOES take acceptance issues into account.
>
> this plot is actually for the UN-recrunched data. (the recrunched data is
> currently giving me real-world problems probably not solvable by next
> wednesday).
>
> time to get drunk.
>
> aaron
>
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