[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Monday, March 19,  2018
1:00 p.m. (coffee at 12:45 p.m.)
CEBAF Center, Room L102

Gautham Rupak
Mississipi State University

*Fate of the Neutron-Deuteron Virtual State as an Efimov Level *

The emergence of Efimov levels in a three-body system is investigated 
near the unitarity limit characterized
by resonating two-body interaction. The triton was one of the three-body 
systems studied by Efimov. No direct
evidence of Efimov levels was found as triton is the only physical bound 
state in this system. However, this system
supports a virtual state. We show that the virtual state evolves into a 
shallow bound state emerging as an excited
triton as we drive the system towards unitarity. We provide a 
model-independent analysis at low energy by formulating
a consistent effective field theory for neutron-deuteron scattering. The 
results presented are universal to atomic,
nuclear and particle physics though we considered a particular system to 
study the emergence of the Efimov levels.


The link to attend remotely via BlueJeans is available at 
https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html 


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