Measurement of compton scattering from the deuteron and an improved extraction of the neutron electromagnetic polarizabilities.
Myers, L S ; Annand, J R M ; Brudvik, Jason LU ; Feldman, G ; Fissum, Kevin LU
; Grießhammer, H W
; Hansen, Kurt
LU
; Henshaw, S S
; Isaksson, Lennart
LU
and Jebali, R
, et al.
(2014)
In Physical Review Letters
113(26).
- Abstract
- The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data-and have been, with good accuracy, in the case of the proton. In contradistinction, information for the neutron requires the use of Compton scattering from nuclear targets. Here, we report a new measurement of elastic photon scattering from deuterium using quasimonoenergetic tagged photons at the MAX IV Laboratory in Lund, Sweden. These first new data in more than a decade effectively double the world data set. Their energy range overlaps with previous experiments and extends it by 20 MeV to higher energies. An analysis using chiral effective... (More)
- The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data-and have been, with good accuracy, in the case of the proton. In contradistinction, information for the neutron requires the use of Compton scattering from nuclear targets. Here, we report a new measurement of elastic photon scattering from deuterium using quasimonoenergetic tagged photons at the MAX IV Laboratory in Lund, Sweden. These first new data in more than a decade effectively double the world data set. Their energy range overlaps with previous experiments and extends it by 20 MeV to higher energies. An analysis using chiral effective field theory with dynamical Δ(1232) degrees of freedom shows the data are consistent with and within the world data set. After demonstrating that the fit is consistent with the Baldin sum rule, extracting values for the isoscalar nucleon polarizabilities, and combining them with a recent result for the proton, we obtain the neutron polarizabilities as α_{n}=[11.55±1.25(stat)±0.2(BSR)±0.8(th)]×10^{-4} fm^{3} and β_{n}=[3.65∓1.25(stat)±0.2(BSR)∓0.8(th)]×10^{-4} fm^{3}, with χ^{2}=45.2 for 44 degrees of freedom. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5039913
- author
- Myers, L S
; Annand, J R M
; Brudvik, Jason
LU
; Feldman, G
; Fissum, Kevin
LU
; Grießhammer, H W
; Hansen, Kurt
LU
; Henshaw, S S
; Isaksson, Lennart
LU
and Jebali, R
, et al. (More)
- Myers, L S
; Annand, J R M
; Brudvik, Jason
LU
; Feldman, G
; Fissum, Kevin
LU
; Grießhammer, H W
; Hansen, Kurt
LU
; Henshaw, S S
; Isaksson, Lennart
LU
; Jebali, R
; Kovash, M A
; Lundin, Magnus
LU
; McGovern, J A
; Middleton, D G
; Nathan, A M
; Phillips, D R
; Schröder, Bent
LU
and Stave, S C
(Less)
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 113
- issue
- 26
- article number
- 262506
- publisher
- American Physical Society
- external identifiers
-
- pmid:25615318
- wos:000350218000012
- pmid:25615318
- scopus:84983627518
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.113.262506
- project
- Elastic and Virtual Compton Scattering and Nucleon Polarizabilities
- language
- English
- LU publication?
- yes
- id
- 761725e9-ae93-4e7a-b1e7-c74c40d0fd1a (old id 5039913)
- date added to LUP
- 2016-04-01 10:48:54
- date last changed
- 2022-04-28 01:39:59
@article{761725e9-ae93-4e7a-b1e7-c74c40d0fd1a,
abstract = {{The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data-and have been, with good accuracy, in the case of the proton. In contradistinction, information for the neutron requires the use of Compton scattering from nuclear targets. Here, we report a new measurement of elastic photon scattering from deuterium using quasimonoenergetic tagged photons at the MAX IV Laboratory in Lund, Sweden. These first new data in more than a decade effectively double the world data set. Their energy range overlaps with previous experiments and extends it by 20 MeV to higher energies. An analysis using chiral effective field theory with dynamical Δ(1232) degrees of freedom shows the data are consistent with and within the world data set. After demonstrating that the fit is consistent with the Baldin sum rule, extracting values for the isoscalar nucleon polarizabilities, and combining them with a recent result for the proton, we obtain the neutron polarizabilities as α_{n}=[11.55±1.25(stat)±0.2(BSR)±0.8(th)]×10^{-4} fm^{3} and β_{n}=[3.65∓1.25(stat)±0.2(BSR)∓0.8(th)]×10^{-4} fm^{3}, with χ^{2}=45.2 for 44 degrees of freedom.}},
author = {{Myers, L S and Annand, J R M and Brudvik, Jason and Feldman, G and Fissum, Kevin and Grießhammer, H W and Hansen, Kurt and Henshaw, S S and Isaksson, Lennart and Jebali, R and Kovash, M A and Lundin, Magnus and McGovern, J A and Middleton, D G and Nathan, A M and Phillips, D R and Schröder, Bent and Stave, S C}},
issn = {{1079-7114}},
language = {{eng}},
number = {{26}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Measurement of compton scattering from the deuteron and an improved extraction of the neutron electromagnetic polarizabilities.}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.113.262506}},
doi = {{10.1103/PhysRevLett.113.262506}},
volume = {{113}},
year = {{2014}},
}