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<div class="moz-cite-prefix">Hi all,<br>
I second the voices expressed for the change. Both ATLAS and CMS
us epreshowers and they are very helpful in e/pi separation and
even in some cases of e/gamma separation when the track of the
electron for some reason or other is not there.<br>
Cheers,<br>
Christine<br>
On 25/8/2016 9:23 μμ, Mark Macrae Dalton wrote:<br>
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Hi all,
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<div class="">There is a proposal to alter the DBCALShower object
to add an additional piece of information for each shower, this
being the energy deposited in the first layer. The idea is to
use this energy as “preshower" information to help with particle
identification. The proponents desire to have this included in
the next analysis launch which goes next week. No specific
studies have yet been done to predict the effectiveness of this
in our case, but in general it is a useful technique.</div>
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<div class="">Implementing this would require a change to the REST
data format to accommodate the new data member. This would
essentially be a permanent change for reasons of backwards
compatibility. These kinds of changes therefore require some
amount of consensus. So, here is your opportunity to comment.</div>
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-webkit-line-break: after-white-space;" class="">Best,<br
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Mark Macrae Dalton</div>
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