[Nuclear] DNP Abstracts

[Lamiaa El Fassi]

Dear NPWG Members,

I am forwarding you the abstracts that we are willing to submit for the DNP
meeting. Your comments are welcome!

Best,

Lamiaa


*Abstract 1*:

Highlight of Fragmentation Studies in CLAS

Lamiaa El Fassi, Sereres C. Johnston and Md Latiful Kabir / On behalf of
the CLAS Collaboration

Over the last few decades several studies have probed color propagation and
hadron production from hard interactions in nuclei, related to one of the
basic phenomenon of quantum chromodynamics (QCD). The process referred to
as hadronization or fragmentation, in which the energetic struck quark
transforms to color-neutral hadrons, is an effective way to probe the
confinement dynamics and test its characteristic time- scales. This talk
will highlight ongoing efforts to study, for the first time, the semi-
inclusive deep inelastic production of Λ0 hyperon in the current and target
fragmentation regions using the 6 GeV CLAS EG2 data. The analysis results
of this baryon channel combined with other meson production in the same
data sets will improve our understanding of the space-time evolution of
hadrons at intermediate energy, and would manifest a good boost for the
upcoming extension of this hadronization program with the upgraded
Jefferson Lab 12 GeV beam-energy and CLAS.

This work is supported in part by the US DOE contracts # DE-FG02-03ER41528
and DE-AC02-06CH11357.
*Abstract 2*:
Study of Forward and Backward Fragmentation Processes in Λ0 Leptoproduction

Sereres C. Johnston and Lamiaa El Fassi    /  On behalf of the CLAS
Collaboration

Fracture functions are akin to fragmentation functions but describe hadron
pro- duction in the target remnant rather than current fragmentation
region, factorizing and evolving in a predictable way. Like structure
functions, fracture functions extracted from an experiment in one kinematic
regime can be used to compute reactions at different scales. Recent
theoretical predictions have acknowledged the leptoproduction of Λ0 hyperon
as the best probe to study the fracture functions in semi-inclusive
deep-inelastic scattering. Λ0 production off deuterium in datasets which
can be finely binned in variables such as Q2, xB and ν provide valuable
experimental input for the first extraction of fracture functions using
electron triggered processes. This talk will describe the ongoing Λ0 analysis
from 6 GeV CLAS EG2 data-sets with a discussion of both forward and
backward fragmentation processes.

This work is supported in part by the US DOE contracts # DE-AC02-06CH11357
and DE-FG02-03ER41528.

**************************************************************************
* Assistant Prof. Lamiaa El Fassi  /  email: le334 at msstate.edu
**************************************************************************
* Phone: (662) 325-0627    /    Fax:  (662) 325-8898
* URL: https://urldefense.proofpoint.com/v2/url?u=http-3A__le334.physics.msstate.edu_&d=DwIFaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=Qb_IZ3X28hc0_BBIH69O6g&m=OslqwsO5SoJXUaM2rAzz8S9O4RLIDscYTkJzYf6tqQE&s=vTSTxTv3FIYiP_U8VqvIvg7QTWaTQMZhEKDvNOQfWKw&e= 
<https://urldefense.proofpoint.com/v2/url?u=http-3A__le334.physics.msstate.edu_&d=DwIFaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=Qb_IZ3X28hc0_BBIH69O6g&m=OslqwsO5SoJXUaM2rAzz8S9O4RLIDscYTkJzYf6tqQE&s=vTSTxTv3FIYiP_U8VqvIvg7QTWaTQMZhEKDvNOQfWKw&e= >
* Department of Physics and Astronomy
* 355 Lee Blvd, 125 Hilbun Hall
* P.O.Box 5167
* Mississippi State, MS 39762
***************************************************************************
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