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

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.072004· OSTI ID:21537694

Keller, D; Hicks, K; Daniel, A; Tang, W ^[1]; 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 ^[2]; Aghasyan, M; De Sanctis, E; Mirazita, M; Anefalos Pereira, S; Rossi, P ^[3]; Baghdasaryan, H ^[4]

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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)

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}.

• OSTI ID: 21537694
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 7; Other Information: DOI: 10.1103/PhysRevD.83.072004; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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