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Title: Recent experimental results for the π + electric form factor from Jefferson Lab

Abstract

The pion holds a special role in our quest to understand hadrons in terms of the underlying degrees of freedom of QCD. It is the lightest mass QCD system and is used as a test case for all models of hadronic structure. While the π + form factor (F π) can be calculated using perturbative QCD at large Q 2, its calculation in the intermediate Q 2 transition region is more complex and model-dependent. Over the past several years, two experiments have been mounted at Jefferson Lab to measure F π over the range of Q 2 = 0.6 to 2.45 GeV 2. The technique utilizes a precision Rosenbluth separation of the p(e, e'π +)n reaction at low -t. F π is then extracted from the separated longitudinal response function (σ L) with the aid of a model. The recent Jefferson Lab data are reviewed, with special emphasis on the extraction of the form factor from the σ L data.

Authors:
ORCiD logo [1]
  1. Univ. of Regina, SK (Canada)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
955721
Report Number(s):
JLAB-PHY-06-635; 7418361; DOE/ER/40150-4435
Journal ID: ISSN 1742-6588; TRN: US1004731
Grant/Contract Number:  
AC05-060R23177
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 69; Conference: Paper compiled for APS Group on Hadronic Physics Meeting; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; DEGREES OF FREEDOM; FORM FACTORS; HADRONS; PHYSICS; PIONS; QUANTUM CHROMODYNAMICS; RESPONSE FUNCTIONS

Citation Formats

Huber, G. M. Recent experimental results for the π + electric form factor from Jefferson Lab. United States: N. p., 2007. Web. doi:10.1088/1742-6596/69/1/012015.
Huber, G. M. Recent experimental results for the π + electric form factor from Jefferson Lab. United States. doi:10.1088/1742-6596/69/1/012015.
Huber, G. M. Mon . "Recent experimental results for the π + electric form factor from Jefferson Lab". United States. doi:10.1088/1742-6596/69/1/012015. https://www.osti.gov/servlets/purl/955721.
@article{osti_955721,
title = {Recent experimental results for the π + electric form factor from Jefferson Lab},
author = {Huber, G. M.},
abstractNote = {The pion holds a special role in our quest to understand hadrons in terms of the underlying degrees of freedom of QCD. It is the lightest mass QCD system and is used as a test case for all models of hadronic structure. While the π+ form factor (Fπ) can be calculated using perturbative QCD at large Q2, its calculation in the intermediate Q2 transition region is more complex and model-dependent. Over the past several years, two experiments have been mounted at Jefferson Lab to measure Fπ over the range of Q2 = 0.6 to 2.45 GeV2. The technique utilizes a precision Rosenbluth separation of the p(e, e'π+)n reaction at low -t. Fπ is then extracted from the separated longitudinal response function (σL) with the aid of a model. The recent Jefferson Lab data are reviewed, with special emphasis on the extraction of the form factor from the σL data.},
doi = {10.1088/1742-6596/69/1/012015},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 69,
place = {United States},
year = {2007},
month = {10}
}

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