[Jlab-seminars] Physics Seminar: Ashot Gasparian on The Proton Radius: Preliminary Result from the PRad Experiment

[Erica Jones]

*Physics Seminar*

*Ashot Gasparian
*

**

*NC A&T State Univeristy USA*

**

//

/*The Proton Radius: Preliminary Result from the PRad Experiment*/

/
/

*Abstract:*

Two new extremely high precision measurements of the proton rms charge 
radius performed in 2010-2012 with muonic hydrogen atom demonstrated up 
to six standard deviations smaller values than the accepted average from 
all previous experiments performed with different methods on regular 
hydrogen. This discrepancy triggered the well known “/proton radius 
puzzle/” in hadronic physics. To address this puzzle, the PRad 
collaboration in May-June 2016 performed a novel 
magnetic-spectrometer-free ep-scattering experiment in Hall B at JLab 
accumulating high statistics and a rich experimental data set. The 
specifics of the PRad experiment and the preliminary physics result of 
the extracted proton radius will be presented in this talk.


*Friday, October 12, 2018*

*10:30 am
*

*CEBAF Center – Auditorium*




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