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Title: Electromagnetic decay of the {Sigma}{sup 0}(1385) to {Lambda}{gamma}

Abstract

The electromagnetic decay {Sigma}{sup 0}(1385){yields}{Lambda}{gamma} was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility. A real photon beam with a maximum energy of 3.8 GeV was incident on a proton target, producing an exclusive final state of K{sup +}{Sigma}{sup *0}. We report the decay widths ratio {Sigma}{sup 0}(1385){yields}{Lambda}{gamma}/{Sigma}{sup 0}(1385){yields}{Lambda}{pi}{sup 0}=1.42{+-}0.12(stat){sub -0.07}{sup +0.11}(sys)%. This ratio is larger than most theoretical predictions by factors ranging from 1.5-3, but is consistent with the only other experimental measurement. From the reported ratio we calculate the partial width and electromagnetic transition magnetic moment for {Sigma}{sup 0}(1385){yields}{Lambda}{gamma}.

Authors:
; ; ;  [1]; ; ; ; ; ; ; ; ; ;  [2]; ; ; ; ;  [3];  [4]
  1. Ohio University, Athens, Ohio 45701 (United States)
  2. Old Dominion University, Norfolk, Virginia 23529 (United States)
  3. INFN, Laboratori Nazionali di Frascati, 00044 Frascati (Italy)
  4. University of Virginia, Charlottesville, Virginia 22901 (United States)
Publication Date:
OSTI Identifier:
21537694
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.83.072004; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CEBAF ACCELERATOR; COMPUTERIZED SIMULATION; ENERGY-LEVEL TRANSITIONS; FORECASTING; GAMMA RADIATION; GEV RANGE 01-10; KAONS PLUS; LAMBDA PARTICLES; MAGNETIC MOMENTS; PARTICLE DECAY; PHOTON BEAMS; PROTONS; SIGMA MINUS PARTICLES; SIGMA NEUTRAL PARTICLES; SIGMA-1385 BARYONS; ACCELERATORS; BARYONS; BEAMS; BOSONS; DECAY; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HYPERONS; IONIZING RADIATIONS; KAONS; LAMBDA BARYONS; LINEAR ACCELERATORS; MESONS; NUCLEONS; PSEUDOSCALAR MESONS; RADIATIONS; SIGMA BARYONS; SIGMA PARTICLES; SIMULATION; STRANGE MESONS; STRANGE PARTICLES

Citation Formats

Keller, D, Hicks, K, Daniel, A, Tang, W, Adhikari, K P, Adhikari, K P, Adikaram, D, Amarian, M, Bennett, R P, Careccia, S L, Klein, A, Seraydaryan, H, Sharabian, Y G, Weinstein, L B, Aghasyan, M, De Sanctis, E, Mirazita, M, Anefalos Pereira, S, Rossi, P, Baghdasaryan, H, and Old Dominion University, Norfolk, Virginia 23529. Electromagnetic decay of the {Sigma}{sup 0}(1385) to {Lambda}{gamma}. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.072004.
Keller, D, Hicks, K, Daniel, A, Tang, W, Adhikari, K P, Adhikari, K P, Adikaram, D, Amarian, M, Bennett, R P, Careccia, S L, Klein, A, Seraydaryan, H, Sharabian, Y G, Weinstein, L B, Aghasyan, M, De Sanctis, E, Mirazita, M, Anefalos Pereira, S, Rossi, P, Baghdasaryan, H, & Old Dominion University, Norfolk, Virginia 23529. Electromagnetic decay of the {Sigma}{sup 0}(1385) to {Lambda}{gamma}. United States. https://doi.org/10.1103/PHYSREVD.83.072004
Keller, D, Hicks, K, Daniel, A, Tang, W, Adhikari, K P, Adhikari, K P, Adikaram, D, Amarian, M, Bennett, R P, Careccia, S L, Klein, A, Seraydaryan, H, Sharabian, Y G, Weinstein, L B, Aghasyan, M, De Sanctis, E, Mirazita, M, Anefalos Pereira, S, Rossi, P, Baghdasaryan, H, and Old Dominion University, Norfolk, Virginia 23529. 2011. "Electromagnetic decay of the {Sigma}{sup 0}(1385) to {Lambda}{gamma}". United States. https://doi.org/10.1103/PHYSREVD.83.072004.
@article{osti_21537694,
title = {Electromagnetic decay of the {Sigma}{sup 0}(1385) to {Lambda}{gamma}},
author = {Keller, D and Hicks, K and Daniel, A and Tang, W and Adhikari, K P and Adhikari, K P and Adikaram, D and Amarian, M and Bennett, R P and Careccia, S L and Klein, A and Seraydaryan, H and Sharabian, Y G and Weinstein, L B and Aghasyan, M and De Sanctis, E and Mirazita, M and Anefalos Pereira, S and Rossi, P and Baghdasaryan, H and Old Dominion University, Norfolk, Virginia 23529},
abstractNote = {The electromagnetic decay {Sigma}{sup 0}(1385){yields}{Lambda}{gamma} was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility. A real photon beam with a maximum energy of 3.8 GeV was incident on a proton target, producing an exclusive final state of K{sup +}{Sigma}{sup *0}. We report the decay widths ratio {Sigma}{sup 0}(1385){yields}{Lambda}{gamma}/{Sigma}{sup 0}(1385){yields}{Lambda}{pi}{sup 0}=1.42{+-}0.12(stat){sub -0.07}{sup +0.11}(sys)%. This ratio is larger than most theoretical predictions by factors ranging from 1.5-3, but is consistent with the only other experimental measurement. From the reported ratio we calculate the partial width and electromagnetic transition magnetic moment for {Sigma}{sup 0}(1385){yields}{Lambda}{gamma}.},
doi = {10.1103/PHYSREVD.83.072004},
url = {https://www.osti.gov/biblio/21537694}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 83,
place = {United States},
year = {Fri Apr 01 00:00:00 EDT 2011},
month = {Fri Apr 01 00:00:00 EDT 2011}
}