[Primex2] DNP abstract

Yang Zhang yzhang132 at gmail.com
Sun Jun 28 19:21:25 EDT 2015


Dear All,

Please find the revised DNP abstract in the following link.

https://www.jlab.org/primex/weekly_meetings/primexII/slides_2015_06_26/DNPabstract_yang.pdf

Best

Yang

On Sun, Jun 28, 2015 at 4:38 PM, Yang Zhang <yzhang132 at gmail.com> wrote:

> Dear All,
>
> Please find my DNP abstract below. I also include a link with a word file
> for the abstract. Please let me know if you have any comment.
>
> DNPabstract_yang.docx
> <https://www.jlab.org/primex/weekly_meetings/primexII/slides_2015_06_26/DNPabstract_yang.docx>
>
> Best
>
> Yang
>
> *Measurement of Neutral π0 Lifetime*
>
>
>
> Yang Zhang
>
> Duke University
>
> (For the PrimEx collaboration)
>
>
>
> QCD chiral anomaly is the dominant component of π0®gg decay. A prediction
> of π0 lifetime can be used as a test of QCD at confinement scale. Recent
> theoretical activities have shown high precision (1% level) calculations of
> the decay width of the π0 decay into two photons. The experiment
> measurement with comparable precision will be critical to test these
> predictions. At Jefferson Lab, the PrimEx collaboration has performed high
> precision experiments to measure the π0 life time using Primakoff effect.
> The first experiment published its result with 2.8% total uncertainty in
> the π0 decay width. The second experiment was carried out in Fall 2010
> with the final goal of 1.4% precision. The preliminary result of this
> experiment will be presented.
>
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