<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=koi8-r">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div> Hi Ashot</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>below is my estimation of the numbers of etas as you asked<br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span>and event selection for them.</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span> Ilya<br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span><br>
</span>
<div>He runs with the new beam energy and w/o CDC:<br>
</div>
<div>61465 61468 61469 61470 61471 61472 61473 61474 61475 61476 61477 61478 61479 61480 61481 61482.<br>
</div>
<div>The total number of events according to Sasha 2.307B.</div>
<div>Total run time (most of the time beam on) 27.5hr<br>
</div>
<div><br>
</div>
<div>The number of etas:<br>
</div>
<div>(3 FCAL outer/inner layers excluded)<br>
</div>
<div><br>
</div>
<div>Eg>1 & Egg>6 264.4K+/-1.3K<br>
</div>
<div>Eg>1 & Egg>9 23.1K+/-0.3K<br>
</div>
<div><br>
</div>
<div>Number of exclusive etas:<br>
</div>
<div>(3 FCAL outer/inner layers excluded,<br>
</div>
<div> |Egg-Ebeam|<2, |Cluster1_time-Cluster2_time|<3.5, <br>
</div>
<div> 15<(Cluster1_time+Cluster2_time)/2-beam_time<24,<br>
</div>
<div> |rf_time-beam_time|<2)<br>
</div>
<div><br>
</div>
<div>Eg>0.5 & Egg>6 8307+/-267<br>
</div>
<div>Eg>0.5 & Egg>9 3285+/-146<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Thus per 1B events, we have<br>
</div>
<div>3.6K+/-0.11K exclusive eta (Eg 0.5/Egg 6)<br>
</div>
<div>1.4K+/-0.06K exclusive eta (Eg 0.5/Egg 9)<br>
</div>
<div><br>
</div>
<div><br>
</div>
<span></span><br>
</div>
</body>
</html>