[Eg6_analysis] rtpc vertex/angle study

[Nathan Baltzell]

Stepan,

The result is same for dphi of 0, 90,and 180.
I added it to the same wiki page, here's a direct link:

https://clasweb.jlab.org/rungroups/lowq/wiki/images/a/a5/DvzRTPC-RTPC_vs_dtheta_dphi.png

-nathan



On Wed, 07 Aug 2013 15:26:18 -0500, Stepan Stepanyan <stepanya at jlab.org>
wrote:

> Nathan,
>
> Your plot for 2 RTPC track vertex and angle difference is an interesting
> one. What is the phi difference of these two tracks. Can you make the
> same graph for tracks with \DeltaPhi=0 and \DeltaPhi=180.
>
> Stepan
> On 8/7/13 12:30 PM, Nathan Baltzell wrote:
>> Hello EG6ers,
>>
>> I noticed an effect in the RTPC in pass1v1 data: an error on the  
>> z-vertex
>> that depends on theta.  It might originate from an error on theta.  If  
>> so,
>> there could be a significant correction for tracks far from 90deg.
>> Here's a little study:
>>
>> https://clasweb.jlab.org/rungroups/lowq/wiki/index.php/RTPC_Vertex_and_Angle_(Aug_7,_2013)
>>
>> Regards,
>> Nathan
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