[Isac-journal-club] TOMORROW (WED) 3:30PM Journal + Snack Club

[journalclub]

TOMORROW (WED) 3:30PM, Journal + Snack Club, THEORY ROOM, MOB

The proto-paper for this week's journal club is titled "Measurement of the
neutron lifetime using an asymmetric magneto-gravitational trap and in situ
detection", and is attached.  It can also be found here:
https://arxiv.org/abs/1707.01817 .  The paper details a major result from
the UCNtau collaboration.


Questions for reading and/or discussion:

* What are "quasi-trapped" neutrons, and why is it important to avoid them?
* Why use both a magnetic Halbach array and an additional magnetic holding
field?
* Why pair the runs up into sets of long and short runs?
* Is this result good enough to extract any further constraints on
cosmological or BSM physics?
* Does this result actually resolve the long held discrepancy between
neutron lifetime measurement techniques?
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