Prospects for extraction of GPDs from global fits of current and future data
from
Tuesday, 22 January 2019 (00:35)
to
Friday, 25 January 2019 (23:20)
Monday, 21 January 2019
Tuesday, 22 January 2019
09:00
Greetings from the NCBJ director
-
Krzysztof Kurek
Greetings from the NCBJ director
Krzysztof Kurek
09:00 - 09:15
09:15
GPD myths and prospects
-
Dieter Müller
(
Theoretical Physics II, Ruhr-University Bochum
)
GPD myths and prospects
Dieter Müller
(
Theoretical Physics II, Ruhr-University Bochum
)
09:15 - 10:00
10:00
GPDs@EIC
-
Elke-Caroline Aschenauer
(
BNL
)
GPDs@EIC
Elke-Caroline Aschenauer
(
BNL
)
10:00 - 10:45
Elke Caroline Aschenauer
10:45
Coffee Break
Coffee Break
10:45 - 11:05
11:05
Parton distribution functions from Lattice QCD
-
Krzysztof Cichy
(
Adam Mickiewicz University
)
Parton distribution functions from Lattice QCD
Krzysztof Cichy
(
Adam Mickiewicz University
)
11:05 - 11:50
In this talk, I will discuss the computation of collinear PDFs in the framework of Lattice QCD, using the so-called quasi-PDF approach introduced by Xiangdong Ji in 2013 and intensively developed thereafter. We employed twisted mass fermions with light quark mass set to its physical value. The relevant matrix elements obtained on the lattice were non-perturbatively renormalized and converted to the $\overline{MS}$ scheme at the scale of 2 GeV. A matching process was applied together with nucleon mass corrections, leading to the reconstruction of light-cone PDFs. We observe a similar behavior between the lattice and phenomenological data, and for both types of polarized PDFs a nice overlap for a range of Bjorken-x values. This presents a major success for the emerging field of direct calculations of quark distributions using Lattice QCD. I will also discuss perspectives for extracting GPDs using a similar approach.
11:50
The need for a computing framework for GPDs
-
Hervé Moutarde
(
IRFU, CEA Saclay
)
The need for a computing framework for GPDs
Hervé Moutarde
(
IRFU, CEA Saclay
)
11:50 - 12:35
12:35
Lunch Break
Lunch Break
12:35 - 13:45
13:45
Mechanical properties of proton based on multipole model
-
Arkadiusz Trawiński
(
IRFU, CEA - Saclay
)
Mechanical properties of proton based on multipole model
Arkadiusz Trawiński
(
IRFU, CEA - Saclay
)
13:45 - 14:30
14:30
Exploring structure and dynamics with GPDs at EIC
-
Christian Weiss
(
JLab
)
Exploring structure and dynamics with GPDs at EIC
Christian Weiss
(
JLab
)
14:30 - 15:15
15:15
Coffee Break
Coffee Break
15:15 - 15:35
15:35
Discussion
Discussion
15:35 - 23:35
Wednesday, 23 January 2019
09:00
GPDs from meson electroproduction
-
Peter Kroll
(
University of Wuppertal
)
GPDs from meson electroproduction
Peter Kroll
(
University of Wuppertal
)
09:00 - 09:45
09:45
CLAS12 Deep Virtual φ
-
Francois-Xavier Girod-Gard
(
JLab / UConn
)
CLAS12 Deep Virtual φ
Francois-Xavier Girod-Gard
(
JLab / UConn
)
09:45 - 10:30
10:30
Coffee Break
Coffee Break
10:30 - 10:50
10:50
On meson production, higher orders, DAs and all that
-
Kornelija Passek-Kumerički
(
Institut Ruđer Bošković
)
On meson production, higher orders, DAs and all that
Kornelija Passek-Kumerički
(
Institut Ruđer Bošković
)
10:50 - 11:35
11:35
Beam spin asymmetries from hard exclusive pion electro-production in the deeply virtual region with CLAS and CLAS 12
-
Stefan Diehl
(
UConn
)
Beam spin asymmetries from hard exclusive pion electro-production in the deeply virtual region with CLAS and CLAS 12
Stefan Diehl
(
UConn
)
11:35 - 12:20
12:20
Photoproduction of a large invariant mass photon pair
-
Aleksandra Pędrak
(
NCBJ
)
Photoproduction of a large invariant mass photon pair
Aleksandra Pędrak
(
NCBJ
)
12:20 - 12:45
12:45
Lunch Break
Lunch Break
12:45 - 13:55
13:55
TUTORIAL/DISCUSSION SESSION
-
Paweł Sznajder
(
NCBJ
)
TUTORIAL/DISCUSSION SESSION
Paweł Sznajder
(
NCBJ
)
13:55 - 15:00
15:00
Coffee Break
Coffee Break
15:00 - 15:20
15:20
TUTORIAL/DISCUSSION SESSION
-
Paweł Sznajder
(
NCBJ
)
TUTORIAL/DISCUSSION SESSION
Paweł Sznajder
(
NCBJ
)
15:20 - 18:30
19:00
Social dinner (optional, self supported)
Social dinner (optional, self supported)
19:00 - 20:30
Thursday, 24 January 2019
09:00
Models of Distribution Amplitudes and GPDs
-
Cédric Mezrag
(
INFN Roma 1
)
Models of Distribution Amplitudes and GPDs
Cédric Mezrag
(
INFN Roma 1
)
09:00 - 09:45
09:45
A discussion about GPD experiments and Machine Learning
-
Maxime Defurne
(
CEA-Saclay
)
A discussion about GPD experiments and Machine Learning
Maxime Defurne
(
CEA-Saclay
)
09:45 - 10:30
10:30
Coffee Break
Coffee Break
10:30 - 10:50
10:50
Some fitting and extraction experiences and status of the GeParD code
-
Krešimir Kumerički
(
University of Zagreb
)
Some fitting and extraction experiences and status of the GeParD code
Krešimir Kumerički
(
University of Zagreb
)
10:50 - 11:35
11:35
Global analysis of DVCS data
-
Paweł Sznajder
(
NCBJ
)
Global analysis of DVCS data
Paweł Sznajder
(
NCBJ
)
11:35 - 12:20
12:20
Lunch Break
Lunch Break
12:20 - 13:30
13:30
CANCELLED - Extraction of Observables from Deeply Virtual Exclusive Electron Proton Scattering Experiments
-
Simonetta Liuti
(
University of Virginia
)
CANCELLED - Extraction of Observables from Deeply Virtual Exclusive Electron Proton Scattering Experiments
Simonetta Liuti
(
University of Virginia
)
13:30 - 14:15
14:15
GPD studies with TCS
-
Marie Boër
GPD studies with TCS
Marie Boër
14:15 - 15:00
15:00
Coffee Break
Coffee Break
15:00 - 15:20
15:20
Discussion
Discussion
15:20 - 23:20
Friday, 25 January 2019
09:00
GPD program with Jefferson Lab 12 GeV Upgrade and the Center for Nuclear Femtography
-
Latifa Elouadrhiri
(
JLab
)
GPD program with Jefferson Lab 12 GeV Upgrade and the Center for Nuclear Femtography
Latifa Elouadrhiri
(
JLab
)
09:00 - 09:45
09:45
Results on deeply virtual exclusive processes from COMPASS
-
Andrzej Sandacz
(
NCBJ
)
Results on deeply virtual exclusive processes from COMPASS
Andrzej Sandacz
(
NCBJ
)
09:45 - 10:30
10:30
Coffee Break
Coffee Break
10:30 - 10:50
10:50
GPDs in high-mass photoproduction
-
Lech Szymanowski
(
NCBJ
)
GPDs in high-mass photoproduction
Lech Szymanowski
(
NCBJ
)
10:50 - 11:35
11:35
Flavor dependence of the GPDs in the large N_c limit
-
Kemal Tezgin
(
Uconn
)
Flavor dependence of the GPDs in the large N_c limit
Kemal Tezgin
(
Uconn
)
11:35 - 12:20
12:20
Lunch Break
Lunch Break
12:20 - 13:30