[Primex2] abstract to DNP meeting

[rpedroni at jlab.org]

Hi Liping,

   The part, "decay is a key test of the QCD predictions based on chiral
anomaly" should be "decay is a key test of QCD predictions based on the
chiral anomaly."

Regards,
Ron

> Hi, all,
>
> Lingling Ma would like to submit a talk to DNP meeting on behalf of the
> PrimEx. The abstract is attached below.  I would appreciate very much for
> your comments and suggestion. Thanks a lot!
>
> Best regards,
>
> Liping
>
>
>
> Status of the PrimEx-II Analysis on the pi0 Lifetime Measurement
>        Lingling Ma
> Lanzhou University
> (For the PrimEx Collaboration)
>
> As the lightest particle in the hadron spectrum, $B&P(B0 plays an
> important role in understanding the fundamental symmetries of QCD. The
> $B&P(B0$B"*&C&C(B decay is a key test of the QCD predictions based on
> chiral anomaly and spontaneous chiral symmetry breaking. Theoretical
> activities over the last decade have resulted in a high precision (1%
> level) in the calculations of the decay amplitude of the $B&P(B0 into
> two photons. The experimental measurement of this parameter with a
> comparable precision will be critical to test these important predictions.
> The PrimEx collaboration at Jefferson Lab has developed and performed
> experiments to measure the $B&P(B0 radiative decay width via the
> Primakoff effect. The published result from the first experimental data
> (PrimEx-I) has a 2.8% total uncertainty in the $B&P(B0 radiative decay
> width.  The second experiment (PrimEx-II) was carried out in fall 2010
> with the final goal of 1.4% precision. The status of PrimEx-II data
> analysis will be presented.
>
>
>
>
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