Measurement of the neutral weak form factors of the proton
Aniol, K. A. ; Fissum, Kevin LU
and Wojtsekhowski, B. B.
(1999)
In Physical Review Letters
82(6).
p.1096-1100
- Abstract
- We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The kinematic point [ ⟨θlab⟩=12.3° and ⟨Q2⟩=0.48(GeV/c)2] is chosen to provide sensitivity, at a level that is of theoretical interest, to the strange electric form factor GsE. The result, A=−14.5±2.2ppm, is consistent with the electroweak standard model and no additional contributions from strange quarks. In particular, the measurement implies GsE+0.39GsM=0.023±0.034(stat)±0.022(syst)±0.026(δGnE), where the last uncertainty arises from the estimated uncertainty in the neutron electric form factor.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/0da90531-f2df-4453-bd02-009740530c6a
- author
- Aniol, K. A.
; Fissum, Kevin
LU
and Wojtsekhowski, B. B.
- author collaboration
- organization
- publishing date
- 1999
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 82
- issue
- 6
- pages
- 1096 - 1100
- publisher
- American Physical Society
- external identifiers
-
- scopus:0000413158
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.82.1096
- project
- Investigations of and with Polarized Electromagnetic Beams
- language
- English
- LU publication?
- yes
- id
- 0da90531-f2df-4453-bd02-009740530c6a
- date added to LUP
- 2019-06-25 11:08:54
- date last changed
- 2022-01-31 22:34:27
@article{0da90531-f2df-4453-bd02-009740530c6a,
abstract = {{We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from the proton. The kinematic point [ ⟨θlab⟩=12.3° and ⟨Q2⟩=0.48(GeV/c)2] is chosen to provide sensitivity, at a level that is of theoretical interest, to the strange electric form factor GsE. The result, A=−14.5±2.2ppm, is consistent with the electroweak standard model and no additional contributions from strange quarks. In particular, the measurement implies GsE+0.39GsM=0.023±0.034(stat)±0.022(syst)±0.026(δGnE), where the last uncertainty arises from the estimated uncertainty in the neutron electric form factor.}},
author = {{Aniol, K. A. and Fissum, Kevin and Wojtsekhowski, B. B.}},
issn = {{1079-7114}},
language = {{eng}},
number = {{6}},
pages = {{1096--1100}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Measurement of the neutral weak form factors of the proton}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.82.1096}},
doi = {{10.1103/PhysRevLett.82.1096}},
volume = {{82}},
year = {{1999}},
}