Conferences

Upcoming conferences of interest and submitted abstracts:

DIS 2023: XXX International Workshop on Deep-Inelastic Scattering and Related Subjects

March 27–31, 2023 at the Kellogg Hotel and Conference Center on the campus of Michigan State University

https://web.pa.msu.edu/conf/DIS2023/

Submitted Abstracts:

• Title TBD (Igor Korover)
  • Generalized Parton Distributions (GPDs) open a new avenue in our understanding of nucleon structure that may shed light on many properties of the nucleon such as spin, mass and 3D images of a completely relativistic QCD system. This is achieved by measuring both transverse and longitudinal properties of the nucleon simultaneously. Extraction of GPDs presents a formidable experimental challenge. However, it has been shown that deeply virtual exclusive reactions can provide unique access to the study of GPDs. In this talk, I will present recent progress in three deeply virtual channels, that are sensitive to different aspects of GPDs, from the CLAS12 experiment in Jefferson Lab Hall B at 10.6 GeV, and the current study of deeply virtual Compton scattering (DVCS) at the forthcoming Electron-Ion Collider.

• Measuring the spatial gluons distribution in nuclei with EPIC at the EIC (Zhoudinming Tu)
  • "One of the golden measurements at the Electron-Ion Collider (EIC) is to measure the coherent diffractive Vector Meson (VM) production on a heavy-nucleus target. The measurement is expected to be sensitive to the non-linear gluon dynamics - saturation, and most importantly, it also provides the gluon density distribution of the nucleus. While the measurement was proposed in the EIC White Paper 10 years ago, it is not until recently that the experimental challenges of this measurement were realized. In this talk, I will  give an overview on the experimental developments from the EIC detector proposals on this measurement, particularly with the lessons learned. I will discuss the key challenges and future opportunities for development, e.g., incoherent production background, energy resolution of EMCal, etc. Based on a new single-stack software package in EPIC, full simulation results with the most up-to-date detector configuration will be presented."

• Inclusive Physics with the EPIC Detector at the Electron Ion Collider (Claire Gwenlan, Tyler Kutz, Paul Newman, Barak Schmookler)
  • "Prospects for inclusive physics studies at the Electron-Ion Collider (EIC) using the EPIC detector are explored.  EPIC is currently under rapid development and is expected to be operational from the first day of data taking.  Simulations are used to determine the detector acceptance and resolutions, and to estimate some significant sources of systematic uncertainty such as backgrounds and inefficiencies in electron identification.  Expected luminosities and beam polarizations in ep and eA collisions allow projections of the EPIC detector performance in measurements of charged- and neutral-current cross sections and asymmetries.  The impact of these measurements on derived quantities such as polarized and unpolarized parton distribution functions is evaluated."

• Kinematic Fitting for Inclusive Physics with EPIC at the EIC (Stephen Maple, Paul Newman)
  • "A precise reconstruction of the kinematic variables x, y, Q^2 is essential for the physics program at the future EIC. Conventional reconstruction methods usually rely on two of the four measured quantities (energy and angle of the scattered electron and hadronic final state) with the resolution of such methods depending on the kinematic regime under study, detector performance, and initial-state photon radiation. A kinematic fit using all measured quantities can fully exploit the available information to obtain a best estimate of the kinematic variables, as well as the energy of any initial state radiation. A technique applying a Bayesian method with suitable priors has been applied to fully simulated inclusive neutral current EIC data in the context of the planned EPIC detector. The performance of the kinematic fitting method is compared with conventional methods. The impact of the precise kinematic reconstruction on the expected physics output of the experiment is explored.
• Semi-Inclusive Physics Prospects at EPIC (Christopher Dilks)
  • "Measurements in semi-inclusive deep inelastic scattering provide a wide range of insights into nucleon structure and hadronization.  Spin asymmetries and cross sections in single-hadron and dihadron production are sensitive to various combinations of transverse momentum-dependent (TMD) distribution and fragmentation functions, depending on the polarizations of the initial electron and target nucleon.  For example, the transverse-spin asymmetry $A_{UT}$ accesses the Sivers, transversity, pretzelosity, and Kotzinian-Mulders TMD distributions, as well as the Collins fragmentation function, while the double-spin asymmetry $A_{LL}$ probes the sea-quark helicity. Insight from semi-inclusive dihadrons includes dihadron fragmentation functions, gluon saturation, and the twist-3 distribution $h_L(x)$.  TMD fragmentation functions are accessible via the production of a final state with a known polarization, in particular, lambdas. These functions probe spin-orbit correlations in fragmentation analogously to those in TMD PDFs. This presentation will summarize the possibilities and impact of these measurements at the forthcoming EPIC experiment at the Electron-Ion Collider."

WWND 2023: 38th Winter Workshop on Nuclear Dynamics

Feb 5 – 11, 2023, Marriott Puerto Vallarta Resort & Spa

https://indico.cern.ch/event/1196342/

Submitted Abstracts:

• Author, Title....