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<p class="MsoNormal">This actually relevant for anyone interested in detecting Lambda decays, add Very Strange to the list.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-Eugene <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Clas12_first_exp <clas12_first_exp-bounces@jlab.org> on behalf of Anselm Vossen <avossen@jlab.org><br>
<b>Date: </b>Tuesday, April 9, 2019 at 12:35 <br>
<b>To: </b>Marco Mirazita <Marco.Mirazita@lnf.infn.it>, Stepan Stepanyan <stepanya@jlab.org><br>
<b>Cc: </b>clas12 exp <clas12_first_exp@jlab.org><br>
<b>Subject: </b>Re: [Clas12_first_exp] Fwd:Consideration for the torus polarity flip for the remaining of the run<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">I second Marco's points about lambda's and di-hadrons.<o:p></o:p></span></p>
<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">I am also interested in polarized lambda studies (pending analysis proposal) which also relies on substantial outbending set. <o:p></o:p></span></p>
<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">Best,<o:p></o:p></span></p>
<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
<p style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">Anselm<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="color:black">From:</span></b><span style="color:black"> Clas12_first_exp <clas12_first_exp-bounces@jlab.org> on behalf of Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Sent:</b> Monday, April 8, 2019 12:41:46 PM<br>
<b>To:</b> Stepan Stepanyan<br>
<b>Cc:</b> clas12 first exp<br>
<b>Subject:</b> Re: [Clas12_first_exp] Fwd:Consideration for the torus polarity flip for the remaining of the run</span>
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Dear all,<br>
for the E12-06-112A/E12-09-008A experiment (Lambda in SIDIS) the <br>
critical point is the acceptance for low energy pi-, which is low with <br>
inbending field.<br>
I attached a plot of the MM(e Lambda X) simulations for inbending (red) <br>
and outbending (black). The difference will be less striking at high Q2 <br>
but it is still there.<br>
For E12-06-112B/E12-09-008B (dihadron production in SIDIS) we will have <br>
two pions with opposite charge in the final state, therefore having both <br>
inbending and outbending data will help in understanding the <br>
systematics.<br>
I understood that the agreement was to have 75% of the data with <br>
inbending and 25% with outbending, is it still so?<br>
Best regards,<br>
Marco<br>
<br>
<br>
<br>
<br>
Il 2019-04-07 22:03 Stepan Stepanyan ha scritto:<br>
> Dear all,<br>
> <br>
> For J/psi and also for the high mass (Q’2>5 GeV) TCS, the acceptance<br>
> for the 3-particle final states (-++) in FD for outbending case is ~x2<br>
> smaller compared to the inbending setting (see below). So, I propose<br>
> to continue with intending for remaining 6 days (18 shifts).<br>
> <br>
> Will be good to see similar motivations for inbending vs. outbending<br>
> configurations for other approved RG-A experiments.<br>
> <br>
> We need to see also accumulated charge for these two settings to date<br>
> for RG-A production runs (>10 GeV).<br>
> <br>
> Also, assuming we will need to do low luminosity, random trigger, and<br>
> empty target runs with the new setting, real production run time with<br>
> outbending polarity will be bit more than 5 days. Is there a real<br>
> benefit to have one more setting (energy/polarity) with small amount<br>
> of data?<br>
> <br>
> Regards, Stepan<br>
> <br>
>> Begin forwarded message:<br>
>> <br>
>>> Hi Stepan,<br>
>>> <br>
>>> Here is the photon energy dependence of the acceptance with 5<br>
>> million<br>
>>> generated events.<br>
>>> <br>
>>> -Joseph<br>
> <br>
> <br>
> _______________________________________________<br>
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> Clas12_first_exp@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/clas12_first_exp">https://mailman.jlab.org/mailman/listinfo/clas12_first_exp</a><o:p></o:p></p>
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