Nucleon and hyperon electromagnetic transitions

Terrence Draper; Derek B. Leiweber; R. M. Woloshyn

doi:10.1016/0920-5632(93)90243-Y

Nucleon and hyperon electromagnetic transitions

Terrence Draper, Derek B. Leiweber, R. M. Woloshyn

Physics And Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The calculation of electromagnetic transition moments has been recognized as a powerful tool to help discriminate among models of hadronic structure. Here, SU(3)-flavor baryon octet-to-decuplet transition moments are examined within a quenched lattice QCD simulation. The pattern of flavor symmetry breaking for the transition moments is found to be more similar to that of decuplet than octet magnetic moments and suggests that the constituent quark model can better account for decuplet than octet structure. The lattice magnetic dipole transition moment for the Nλ → Δ channel is found to be in agreement with recent (model-dependent) experimental determinations. The lattice results indicate μ_pΔ/μ_p = 0.88(15) for pγ → Δ⁺. For the hyperon electromagnetic transitions, the significant nonvanishing signals for the E2/M1 ratio in Ξ _- and ∑^- electromagnetic transitions are of particular interest.

Original language	English
Pages (from-to)	427-430
Number of pages	4
Journal	Nuclear Physics B - Proceedings Supplements
Volume	30
Issue number	C
DOIs	https://doi.org/10.1016/0920-5632(93)90243-Y
State	Published - Mar 1993

Bibliographical note

Funding Information:
This work is supported in part by the U.S. Department of Energy under grant numbers DE-FG05-84ER40154 and DE-FG05-87ER-40322, by the National Science Foundation under grant number STI-9108764 and by the Natural Sciences and Engineering Research Council of Canada.

Funding

This work is supported in part by the U.S. Department of Energy under grant numbers DE-FG05-84ER40154 and DE-FG05-87ER-40322, by the National Science Foundation under grant number STI-9108764 and by the Natural Sciences and Engineering Research Council of Canada.

Funders	Funder number
National Science Foundation Arctic Social Science Program	STI-9108764
National Science Foundation Arctic Social Science Program
U.S. Department of Energy EPSCoR	DE-FG05-84ER40154, DE-FG05-87ER-40322
U.S. Department of Energy EPSCoR
Natural Sciences and Engineering Research Council of Canada

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

Access to Document

10.1016/0920-5632(93)90243-Y

Cite this

@article{df715a62be8a45b8ab433db8c3c9c467,

title = "Nucleon and hyperon electromagnetic transitions",

abstract = "The calculation of electromagnetic transition moments has been recognized as a powerful tool to help discriminate among models of hadronic structure. Here, SU(3)-flavor baryon octet-to-decuplet transition moments are examined within a quenched lattice QCD simulation. The pattern of flavor symmetry breaking for the transition moments is found to be more similar to that of decuplet than octet magnetic moments and suggests that the constituent quark model can better account for decuplet than octet structure. The lattice magnetic dipole transition moment for the Nλ → Δ channel is found to be in agreement with recent (model-dependent) experimental determinations. The lattice results indicate μpΔ/μp = 0.88(15) for pγ → Δ+. For the hyperon electromagnetic transitions, the significant nonvanishing signals for the E2/M1 ratio in Ξ - and ∑- electromagnetic transitions are of particular interest.",

author = "Terrence Draper and Leiweber, {Derek B.} and Woloshyn, {R. M.}",

note = "Funding Information: This work is supported in part by the U.S. Department of Energy under grant numbers DE-FG05-84ER40154 and DE-FG05-87ER-40322, by the National Science Foundation under grant number STI-9108764 and by the Natural Sciences and Engineering Research Council of Canada.",

year = "1993",

month = mar,

doi = "10.1016/0920-5632(93)90243-Y",

language = "English",

volume = "30",

pages = "427--430",

number = "C",

}

TY - JOUR

T1 - Nucleon and hyperon electromagnetic transitions

AU - Draper, Terrence

AU - Leiweber, Derek B.

AU - Woloshyn, R. M.

N1 - Funding Information: This work is supported in part by the U.S. Department of Energy under grant numbers DE-FG05-84ER40154 and DE-FG05-87ER-40322, by the National Science Foundation under grant number STI-9108764 and by the Natural Sciences and Engineering Research Council of Canada.

PY - 1993/3

Y1 - 1993/3

N2 - The calculation of electromagnetic transition moments has been recognized as a powerful tool to help discriminate among models of hadronic structure. Here, SU(3)-flavor baryon octet-to-decuplet transition moments are examined within a quenched lattice QCD simulation. The pattern of flavor symmetry breaking for the transition moments is found to be more similar to that of decuplet than octet magnetic moments and suggests that the constituent quark model can better account for decuplet than octet structure. The lattice magnetic dipole transition moment for the Nλ → Δ channel is found to be in agreement with recent (model-dependent) experimental determinations. The lattice results indicate μpΔ/μp = 0.88(15) for pγ → Δ+. For the hyperon electromagnetic transitions, the significant nonvanishing signals for the E2/M1 ratio in Ξ - and ∑- electromagnetic transitions are of particular interest.

AB - The calculation of electromagnetic transition moments has been recognized as a powerful tool to help discriminate among models of hadronic structure. Here, SU(3)-flavor baryon octet-to-decuplet transition moments are examined within a quenched lattice QCD simulation. The pattern of flavor symmetry breaking for the transition moments is found to be more similar to that of decuplet than octet magnetic moments and suggests that the constituent quark model can better account for decuplet than octet structure. The lattice magnetic dipole transition moment for the Nλ → Δ channel is found to be in agreement with recent (model-dependent) experimental determinations. The lattice results indicate μpΔ/μp = 0.88(15) for pγ → Δ+. For the hyperon electromagnetic transitions, the significant nonvanishing signals for the E2/M1 ratio in Ξ - and ∑- electromagnetic transitions are of particular interest.

UR - http://www.scopus.com/inward/record.url?scp=43949173247&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43949173247&partnerID=8YFLogxK

U2 - 10.1016/0920-5632(93)90243-Y

DO - 10.1016/0920-5632(93)90243-Y

M3 - Article

AN - SCOPUS:43949173247

SN - 0920-5632

VL - 30

SP - 427

EP - 430

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

IS - C

ER -

Nucleon and hyperon electromagnetic transitions

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this