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Dear Hybrid Baryons Collaborators,<br>
please find in the following the first response from the Review
Committee.<br>
They say they are impressed with the proposal and mainly suggest
some clarification in the text,<br>
which I don't expect requiring too much work.<br>
They also propose to define a short "executive summary, which may
require some specific thinking and <br>
common agreement.<br>
I propose we send Dan the required integrations on the parts he/she
has written and Dan may implements them (after checking the English
wording!) generating a first revised draft, which we may discuss at
the next meeting.<br>
All the best<br>
Annalisa<br>
<br>
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-------- Messaggio Inoltrato --------
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Oggetto:
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<td>Re: HSWG: PAC44 Hybrid meson photoproduction (A.D'Angelo
et al.) review committee</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Data: </th>
<td>Fri, 6 May 2016 16:43:29 +0100</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Mittente:
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<td>Dan Watts <a class="moz-txt-link-rfc2396E" href="mailto:dwatts1@ph.ed.ac.uk"><dwatts1@ph.ed.ac.uk></a></td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">A: </th>
<td>Daniel Watts <a class="moz-txt-link-rfc2396E" href="mailto:daniel.watts@ph.ed.ac.uk"><daniel.watts@ph.ed.ac.uk></a>, Carlos
Salgado <a class="moz-txt-link-rfc2396E" href="mailto:salgado@jlab.org"><salgado@jlab.org></a>, nick markov
<a class="moz-txt-link-rfc2396E" href="mailto:markov@jlab.org"><markov@jlab.org></a>, <a class="moz-txt-link-abbreviated" href="mailto:annalisa.dangelo@roma2.infn.it">annalisa.dangelo@roma2.infn.it</a>,
Marco Battaglieri <a class="moz-txt-link-rfc2396E" href="mailto:battagli@jlab.org"><battagli@jlab.org></a>,
<a class="moz-txt-link-abbreviated" href="mailto:markov@jlab.org">markov@jlab.org</a>, Carlos Salgado <a class="moz-txt-link-rfc2396E" href="mailto:salgado@jlab.org"><salgado@jlab.org></a></td>
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<pre>Dear Annalisa,
All the reviewers were impressed with the proposal and agreed that a
very thorough job has been made in simulating the analysis and that the
physics case is well made. The comments and suggestions from the
reviewers are collated below
Best regards,
Dan
p7: Are there any (even simple minded) theoretical studies that
indicate that the hybrid baryons should have a comparable width to the
standard N*? Or that the photocoupling is of similar magnitude?
Also could the (disputed) sightings of hybrid states in the meson sector
with widths of similar magnitude to standard mesons be mentioned as a
possible indication that hybrids are not expected to have large
unobservable widths?
P7 Fig. 2: Should probably mention what the other curves are (maybe in
the caption) so readers dont have to look up the paper.
P9. 3rd para: A result similar -> A theoretical result similar
p13: Is there an estaimated timescale for calculations at the physical
pion mass to become available?
p22 1st para: providing a nicely complementary range of measurable
photon virtualities -> providing a complementary range of measurable
photon virtualities, including the gap region for the lower beam energy
setting.
p24 called FASTMC -> (FASTMC) this had already been defined
p27 1st para: with a detection efficiency lower than in the inclusive
case where the value of W_rec is determined-> with a correspondingly lower
p32 1st para: since kinematic region -> since the kinematic region
p38 1st para: completely dominates ( this assumes the forward tagger is
triggered on charged particles i.e. ignoring the photon flux - text is
probably OK as is though)
p38 3rd para: the farm -> a CPU farm
p43: These ratio -> These ratios
-------------
FASTMC is an important part of you studies. Could you provide some more
details on it?
Figs 6: what are the solid lines?
P.21, Fig 12. In the text it says that positive torus current causes
increase in minimum detectable $Q^{2}$, while negative current lowers
the minimum values. Fig. 12 shows that in both cases minimal $Q^{2}$ is
about $0.2 GeV^{2}$. Could you clarify?
P. 48, Eq 8, last line: $105 cos\theta \to 105 cos^{2}\theta$
Fig 15, right. What are the dots?
Fig 20. How do you select exclusivity cuts?
Fig. 25, 26: The depletion at 35 degrees is much more prominent for p
and $K^{+}$ than for $\pi^{-}$. Could you clarify why?
-------------
Since the full proposal is presenting such detailed studies of proposed
analysis and running conditions, it will be nice to see somewhere a
short "executive summary"
where with tables or simple statements there will be details of the
overall proposal : i.e. most important expected physics outputs and
effects in hadron structure models, specific running conditions (i.e a
table including triggers and effects on other parallel programs in
CLAS12), expected more difficult points on the analysis -model
dependences, backgrounds, ambiguities, acceptances ...... and so on.
Best,
Dan
On 05/05/2016 11:32, Dan Watts wrote:
> Hi
>
> I hope to have finished reviewing the proposal later today/early
> tomorrow. The deadline is quite tight.
> How is everyone else doing?
>
> Best,
> Dan
>
> On 19/04/2016 07:54, Marco Battaglieri wrote:
>> Dear Dan (chair), Nick and Carlos,
>> I'd like to thank you for agreeing to be part of the Hybrid meson
>> photoproduction (A.D'Angelo et al.) review committee.
>> In attachment you will find the charge with deadlines and duty.
>> Annalisa D'Angelo is acting as contact person. I'm expecting he will
>> provide all necessary support (supporting material, missing info,
>> answers, ...) in a timely manner in order to respect the deadline.
>> Thanks again for your contribution.
>> Marco
>>
>>
>>
>>
>
>
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Scotland, with registration number SC005336.
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