[Isac-journal-club] Reminder: Journal Club TODAY 3:30

[journalclub]

Hi All,
A reminder that today (wednesday 22nd) at 3:30 in the MOB theory room we
will have our fortnightly journal/snack club.


---------- Forwarded message ----------
From: Nir Nevo Dinur <nnevodinur at triumf.ca>
Date: 20 November 2017 at 12:24
Subject: Isac-journal-club this Wed. Nov. 22
To: Isac-Journal-Club at trmail.triumf.ca
Cc: journalclub <journalclub at triumf.ca>


Hi,

The paper (attached) for the coming ISAC journal club is *The Rydberg
constant and proton size from atomic hydrogen*

[Science. <https://www.ncbi.nlm.nih.gov/pubmed/28983046#> 2017 Oct
6;358(6359):79-85. doi: 10.1126/science.aah6677]

You can also use the comment on it from the same issue (also attached)


Questions (from easiest to hardest :-) ):

1) What is the proton radius (puzzle) ?

2) Why do you (usually) need two measurements to determine it, and why is the
1S-2S used?

3) What are the main experimental challenges in the precision goal of this
measurement?

4) How are they overcome?

5) Is the use of sophisticated simulations no longer needed?

6) Are there similar phenomena that might affect measurements of nuclear
spectra?

7) So what is the proton radius after all?


Best,
Nir


Dr. Nir Nevo Dinur
Postdoctoral Fellow
Theory Group
Physical Sciences Div.
TRIUMF
4004 Wesbrook Mall,
Vancouver, BC V6T 2A3, Canada+1-604-222-1047x6445 <(604)%20222-1047>
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