<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
Hi CALWG folks:
<div><br>
</div>
<div>Here are some new studies from Tegan on the omega-pi photon efficiency.</div>
<div><br>
</div>
<div>We can discuss them at the next meeting, on Nov 19.</div>
<div><br>
</div>
<div>Cheers, Zisis…</div>
<div><br id="lineBreakAtBeginningOfMessage">
<div>
<div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="text-align: start; text-indent: 0px; overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; widows: 2; border-spacing: 0px;"><span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; widows: 2; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; widows: 2; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-indent: 0px; widows: 2; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-indent: 0px; widows: 2; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-indent: 0px; widows: 2; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; orphans: 2; text-indent: 0px; widows: 2; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div>
<div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div dir="auto" style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px;"><span class="Apple-style-span" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px; border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; text-align: -webkit-auto; border-spacing: 0px;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; text-align: -webkit-auto; border-spacing: 0px; -webkit-text-decorations-in-effect: none;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px; -webkit-text-decorations-in-effect: none;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px; -webkit-text-decorations-in-effect: none;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px; -webkit-text-decorations-in-effect: none;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span class="Apple-style-span" style="border-collapse: separate; font-variant-ligatures: normal; font-variant-east-asian: normal; font-variant-position: normal; line-height: normal; border-spacing: 0px; -webkit-text-decorations-in-effect: none;">
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<div><font class="Apple-style-span" color="#1d5091" face="Verdana" size="4">Dr. Zisis Papandreou</font></div>
<div><span class="Apple-style-span" style="font-size: 13px;"><font class="Apple-style-span" face="Verdana">Head, Department of Physics</font></span></div>
<div><span class="Apple-style-span" style="font-size: 13px;"><font class="Apple-style-span" face="Verdana">Professor of Physics, Ph.D., P.Phys.</font></span></div>
<div><span class="Apple-style-span" style="font-size: 13px;"><font class="Apple-style-span" face="Verdana">---------------------------------------------------------</font></span></div>
<div><font class="Apple-style-span" face="Verdana" color="#929292">Department of Physics </font></div>
<div><font class="Apple-style-span" face="Verdana" color="#929292">University of Regina<span class="Apple-tab-span" style="white-space: pre;">
</span> </font></div>
<div><font class="Apple-style-span" face="Verdana" color="#929292">3737 Wascana Parkway</font></div>
<div><font class="Apple-style-span" face="Verdana" color="#929292">Regina, SK S4S 0A2<span class="Apple-tab-span" style="white-space: pre;">
</span> CANADA</font></div>
<div><font class="Apple-style-span" face="Verdana"><br>
</font></div>
<div><font class="Apple-style-span" face="Verdana"><b>Phone: (306) 585-5379</b></font></div>
</div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</span>
<div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;">
<span class="Apple-style-span" style="font-family: Verdana;"><font class="Apple-style-span" color="#929292">Email:</font> </span><a href="mailto:zisis@uregina.ca">zisis@uregina.ca</a></div>
<div>
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<font class="Apple-style-span" face="Verdana" color="#929292" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; -webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: 0px;">Website: </font><span style="text-align: -webkit-auto;"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.uregina.ca_science_physics_directory_faculty_zisis-2Dpapandreou.html&d=DwMGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=qOykDDW07dxNIz2gqzRW_0sRJeff1E30DnojDqga1Jo&m=LzIT3zVxRWtQxgoN629iXdczoXXVJiVFArmwCzNdT8GQbYh3NfhtEYkd6pckoElK&s=HnrUp-BQ0HkknXOQFLQGREYvVeq3MEaOp4LsUD8E_xE&e=">https://www.uregina.ca/science/physics/directory/faculty/zisis-papandreou.html</a></span></div>
</div>
<div style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">
<span style="text-align: -webkit-auto;"><br>
</span></div>
</span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></div>
</span></span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br class="Apple-interchange-newline">
<br class="Apple-interchange-newline">
</div>
<div><br>
<blockquote type="cite">
<div>Begin forwarded message:</div>
<br class="Apple-interchange-newline">
<div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">
<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>From:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;">Tegan Beattie <Tegan.Beattie@uregina.ca><br>
</span></div>
<div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">
<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>Subject:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;"><b>Omega Photon Efficiency</b><br>
</span></div>
<div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">
<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>Date:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;">November 7, 2025 at 10:33:02 AM CST<br>
</span></div>
<div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;">
<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);"><b>To:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;">Zisis Papandreou <Zisis.Papandreou@uregina.ca><br>
</span></div>
<br>
<div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
Hey Zisis. I tried to send this to the calorimetry mailing list (<a href="mailto:halld-cal@jlab.org">halld-cal@jlab.org</a>), but it bounced, saying 'posting to this list is restricted.' Would you send this out for me?</div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
<br>
</div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
-------------<br>
<br>
</div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
Hey.<br>
<br>
Last meeting we had, I showed some update on Karthik's old Omega photon efficiency study with some fixed fits that Emily and I worked on over the summer. It was suggested to look at MC for a comparison; I found some signal MC that Karthik had on the farm and
Sean helped me get the environment working to run the analysis over a Fall 2018 bggen sample. I meant to show them at the next meeting, but a bunch of them were cancelled and I forgot to send this email until now...<br>
<br>
</div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
The plots are here:<span class="Apple-converted-space"> </span><a data-auth="NotApplicable" data-linkindex="0" rel="noopener noreferrer" title="https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6981" class="x_OWAAutoLink" id="OWAaf375fd3-9516-aac4-f2b6-e55afc1d5690" target="_blank" href="https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6981">https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6981</a></div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
<br>
</div>
<div class="elementToProof" style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">
The slides from the October meeting are there along with the new plots for data, MC, and bggen (mostly I think the interesting files will be the 'OmegaMassFit' files to look at the mass distributions). I think bggen probably doesn't model the b1, which is
what the plugin is built for, and probably it also doesn't have alot of the channels that contribute to the background in the data.<br>
<br>
I'm guessing we might have to do quite a bit of signal MC work with various channels that should contribute to add to the bggen results to get something that resembles the data, but I'm wondering if some MC set for a realistic b1 analysis has maybe already
been generated at some point.</div>
</div>
</blockquote>
</div>
<br>
</div>
</body>
</html>