[Theory-seminars] Fwd: Please Save the Date: Final Oral Examination for the Ph.D. Degree- Adithia Kusno - Wednesday, November 29 at 2 PM

[Mary Fox]

-------- Forwarded Message --------
Subject: 	Please Save the Date: Final Oral Examination for the Ph.D. 
Degree- Adithia Kusno - Wednesday, November 29 at 2 PM
Date: 	Thu, 9 Nov 2017 19:47:38 +0000
From: 	Wilkinson, Ellie V <evwilk at wm.edu>
To: 	physics2017 at physics.wm.edu <physics2017 at physics.wm.edu>
CC: 	undergrads2017 at physics.wm.edu <undergrads2017 at physics.wm.edu>



*Physics Dissertation Defense*

*Adithia Kusno*

Wednesday, November 29, 2017

2:00 P.M.

Small Hall, Room 122

**

*Title of Talk**:**“Pion Form Factor at High Momentum Transfer on 
Lattice Quantum Chromodynamics”*

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*Abstract:*

We explore the calculation of pion form factor at high momentum 
transfer. The determinations of the spectrum of the pion is performed on 
dynamical lattices with two volumes and with pion masses heavier than 
twice the physical mass. We employ an anisotropic lattice using a tree 
level improved clover quark and gauge actions featuring two lighter 
degenerate flavors of quarks, and a heavier quark tuned to approximate 
the quark mass gap with the lightest two quarks. We utilize the 
technology necessary to isolate a single matrix element via the use of 
variationally optimized operators. This exploratory calculation 
constitutes the very first determination of the electromagnetic form 
factor of pion at high momentum transfer within a first principle 
approach to QCD performed using distillation framework to give a 
quantitative picture, relevant to the experimental measurements at 
Jefferson Lab. Focusing on two regimes where the long distance or low 
momentum regime relevant for the calculation of the charge radius and 
the short distance or high momentum regime describing the approach to 
quark and gluonic degrees of freedom. We find that our calculation agree 
within a value below that of the vector meson dominance pole form 
appropriate to low momentum transfer and above that of the asymptotic 
perturbative QCD calculation at high momentum transfer. Our calculations 
show that in principle we can reach higher momentum transfer values by 
implementing the method of momentum smearing in our quark field design 
to further explore the region where the perturbative QCD result emerges 
at higher momentum transfer.

*Bio:*

Adithia Kusno was born in Jakarta, Indonesia. His late father, a physics 
professor, encouraged scientific inquiry. Since his youth Adithia has 
always enjoyed studying science and philosophy. He majored in Nuclear 
Physics at Pelita Harapan University in Indonesia, receiving a full 
scholarship for his undergraduate physics studies from the Surya 
Institute. After completing his senior thesis on the topic of Monte 
Carlo for radiation therapy dose calculations, he graduated in January 
2008 magna cum laude. For two years he worked as an editor for high 
school physics textbooks.

Adithia entered College of William & Mary in Fall 2009. In 2011, he 
joined Prof. Kostas Orginos' Lattice QCD group. His research in the 
study of hadronic form factor at high momentum transfer helps to link a 
non-perturbative QCD with perturbative QCD. He and his wife Sasha met at 
church in 2014 and are expecting their firstborn son on Christmas Day. 
After graduation, he hopes to continue in the field of physics and 
instill a love of science in their children.

Open to the public.

******

*Ellie V. Wilkinson*

Administrative Coordinator

The College of William & Mary-Physics
Small Hall, Room 123
300 Ukrop Way
Williamsburg, VA 23185

Telephone: 757-221-3503

Fax: 757-221-3540

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