Measurement of inclusive spin structure functions of the deuteron
Yun, J. ; Fissum, Kevin LU
and Zhou, Z.
(2003)
In Physical Review C: covering nuclear physics
67(5).
p.055204-055204
- Abstract
- We report the results of a new measurement of spin structure functions of the deuteron in the region of moderate momentum transfer [Q2=0.27–1.3(GeV/c)2] and final hadronic state mass in the nucleon resonance region (W=1.08–2.0GeV). We scattered a 2.5 GeV polarized continuous electron beam at Jefferson Lab off a dynamically polarized cryogenic solid state target (15ND3) and detected the scattered electrons with the CEBAF large acceptance spectrometer. From our data, we extract the longitudinal double spin asymmetry A|| and the spin structure function gd1. Our data are generally in reasonable agreement with existing data from SLAC where they overlap, and they represent a substantial improvement in statistical precision. We compare our... (More)
- We report the results of a new measurement of spin structure functions of the deuteron in the region of moderate momentum transfer [Q2=0.27–1.3(GeV/c)2] and final hadronic state mass in the nucleon resonance region (W=1.08–2.0GeV). We scattered a 2.5 GeV polarized continuous electron beam at Jefferson Lab off a dynamically polarized cryogenic solid state target (15ND3) and detected the scattered electrons with the CEBAF large acceptance spectrometer. From our data, we extract the longitudinal double spin asymmetry A|| and the spin structure function gd1. Our data are generally in reasonable agreement with existing data from SLAC where they overlap, and they represent a substantial improvement in statistical precision. We compare our results with expectations for resonance asymmetries and extrapolated deep inelastic scaling results. Finally, we evaluate the first moment of the structure function gd1 and study its approach to both the deep inelastic limit at large Q2 and to the Gerasimov-Drell-Hearn sum rule at the real photon limit (Q2→0). We find that the first moment varies rapidly in the Q2 range of our experiment and crosses zero at Q2 between 0.5 and 0.8(GeV/c)2, indicating the importance of the Δ resonance at these momentum transfers. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/cb579165-0e98-4058-8708-f2dcf7c7e2ef
- author
- Yun, J.
; Fissum, Kevin
LU
and Zhou, Z.
- author collaboration
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C: covering nuclear physics
- volume
- 67
- issue
- 5
- pages
- 055204 - 055204
- publisher
- American Physical Society
- external identifiers
-
- scopus:0042154424
- ISSN
- 2469-9985
- DOI
- 10.1103/PhysRevC.67.055204
- language
- English
- LU publication?
- no
- id
- cb579165-0e98-4058-8708-f2dcf7c7e2ef
- date added to LUP
- 2019-06-24 11:17:42
- date last changed
- 2025-04-04 14:03:44
@article{cb579165-0e98-4058-8708-f2dcf7c7e2ef,
abstract = {{We report the results of a new measurement of spin structure functions of the deuteron in the region of moderate momentum transfer [Q2=0.27–1.3(GeV/c)2] and final hadronic state mass in the nucleon resonance region (W=1.08–2.0GeV). We scattered a 2.5 GeV polarized continuous electron beam at Jefferson Lab off a dynamically polarized cryogenic solid state target (15ND3) and detected the scattered electrons with the CEBAF large acceptance spectrometer. From our data, we extract the longitudinal double spin asymmetry A|| and the spin structure function gd1. Our data are generally in reasonable agreement with existing data from SLAC where they overlap, and they represent a substantial improvement in statistical precision. We compare our results with expectations for resonance asymmetries and extrapolated deep inelastic scaling results. Finally, we evaluate the first moment of the structure function gd1 and study its approach to both the deep inelastic limit at large Q2 and to the Gerasimov-Drell-Hearn sum rule at the real photon limit (Q2→0). We find that the first moment varies rapidly in the Q2 range of our experiment and crosses zero at Q2 between 0.5 and 0.8(GeV/c)2, indicating the importance of the Δ resonance at these momentum transfers.}},
author = {{Yun, J. and Fissum, Kevin and Zhou, Z.}},
issn = {{2469-9985}},
language = {{eng}},
number = {{5}},
pages = {{055204--055204}},
publisher = {{American Physical Society}},
series = {{Physical Review C: covering nuclear physics}},
title = {{Measurement of inclusive spin structure functions of the deuteron}},
url = {{http://dx.doi.org/10.1103/PhysRevC.67.055204}},
doi = {{10.1103/PhysRevC.67.055204}},
volume = {{67}},
year = {{2003}},
}