[b1_ana] draft proposal v02

Dustin Keller dustin at jlab.org
Sun May 5 03:03:51 EDT 2013


here is what i was thinking, let me know if we want to add something
like this and we can clean it up a bit and add some details.

dustin

On Sun, 5 May 2013, Karl Slifer wrote:

> Hi Oscar,
>
> I modified this eq as you suggested to show the explicit dependence on Q
> and e.
>
> -Karl
>
>
> [image: Inline image 3]
>
> ---
> Karl J. Slifer
> Assistant Professor
> University of New Hampshire
> Telephone : 603-722-0695
>
>
> On Fri, May 3, 2013 at 9:38 PM, Oscar Rondon-Aramayo <
> or at cms.mail.virginia.edu> wrote:
>
>> Hi,
>>
>> To further remove any confusion about our method and its errors, I suggest
>> that instead of writing eq. (19) in terms of charge normalized, efficiency
>> corrected counts, we display the charges and efficiencies explicitly, and
>> use raw counts. Although we stated the kind of counts we are using in that
>> eq. just above it, it seems Steve missed it.
>>
>> Per eqs. (32) and (33) in the appendix 2.2.3, this means just moving Q's
>> and
>> epsilons to the l.h.sides, since N1 and N are indeed raw counts there, and
>> don't make any approximations, like Q1 ~ Q, etc.
>>
>> Then, the l.h.s. of eq. (34) would be
>>
>> (Q/Q1)*(e/e1)*(N1/N) and
>>
>> eq. (19) becomes
>>
>>   Azz =  2/(f*Pzz)*[(Q/Q1)*(e/e1)*(N1/N) - 1]
>>
>> where it's evident that Q's and e's are normalizations or scale factors,
>> just like f and Pzz, and change the text above the equation to say raw
>> counts, not normalized and corrected ones.
>>
>> I don't see any other way to make it any clearer.
>>
>> And, of course, we need to emphasize somewhere that the statistical error
>> is
>> always based on the RAW counts.
>>
>> Cheers,
>>
>> Oscar
>>
>>
>>
>> On Fri, 3 May 2013 17:43:55 -0400
>>   Karl Slifer <karl.slifer at unh.edu> wrote:
>>> Hi all,
>>>
>>> I got a ton of comments, and I think I've implemented them all.  I think
>>> the most substantial pertain to the following: (equation numbers refer to
>>> the attached draft)
>>>
>>> Eq 17 and 19: Azz expressed as ratio - 1 as suggested by Oscar
>>>
>>> Eq 22 : Total time expressed in terms of R_T as noted by Patricia and
>>> concurred by Ellie and Oscar.
>>>
>>> Page 23 Charge determination systematic : modified to reflect Oscar and
>>> JP's suggestions
>>>
>>> There were a lot more, so please double check that your suggestions have
>>> been satisfactorily included.
>>>
>>> The overhead and target sections are still in progress.  Anyone have time
>>> to help with that?
>>>
>>> thanks,
>>>
>>> Karl
>>>
>>>
>>> ---
>>> Karl J. Slifer
>>> Assistant Professor
>>> University of New Hampshire
>>> Telephone : 603-722-0695
>>
>> _______________________________________________
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>> b1_ana at jlab.org
>> https://mailman.jlab.org/mailman/listinfo/b1_ana
>>
>
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