scholarly journals Study on ηc2(ηb2) electromagnetic decay into double photons

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Li Yang ◽  
Wen-Long Sang ◽  
Hong-Fei Zhang ◽  
Yu-Dong Zhang ◽  
Ming-Zhen Zhou
Keyword(s):  
Electromagnetic Decay

scholarly journals Production and electromagnetic decay of hyperons: a feasibility study with HADES as a phase-0 experiment at FAIR

2021 ◽  
Vol 57 (4) ◽  
Author(s):  
J. Adamczewski-Musch ◽  
◽  
A. Belyaev ◽  
A. Blanco ◽  
C. Blume ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Feasibility Study ◽  
Cross Sections ◽  
Production Cross ◽  
Electromagnetic Decay ◽  
Electromagnetic Decays ◽  
Detector Acceptance ◽  
Phase 0 ◽  
Forward Detector ◽  
Expected Signal

AbstractA feasibility study has been performed in order to investigate the performance of the HADES  detector to measure the electromagnetic decays of the hyperon resonances $$\Sigma (1385)^{0}$$ Σ ( 1385 ) 0 ,  $$\Lambda (1405)$$ Λ ( 1405 )   and $$\Lambda (1520)$$ Λ ( 1520 )   as well as the production of double strange baryon systems $$\Xi ^{-}$$ Ξ -  and $$\Lambda $$ Λ $$\Lambda $$ Λ  in p + p reactions at a beam kinetic energy of $$4.5\,{\mathrm{GeV}}$$ 4.5 GeV . The existing HADES  detector will be upgraded by a new Forward Detector, which extends the detector acceptance into a range of polar angles that plays a crucial role for these investigations. The analysis of each channel is preceded by a consideration of the production cross-sections. Afterwards the expected signal count rates using a target consisting of either liquid hydrogen or polyethylene are summarized.

O16(γ,n)O15*andO16(γ,p)N15*Reactions and the Electromagnetic Decay ofO15*andN15

1969 ◽  
Vol 182 (4) ◽  
pp. 1097-1103 ◽  
Author(s):  
Kenneth M. Murray ◽  
James C. Ritter
Keyword(s):  
Electromagnetic Decay

Electromagnetic Decay of theN143.95- and 7.03-MeV Levels

1967 ◽  
Vol 154 (4) ◽  
pp. 971-980 ◽  
Author(s):  
J. W. Olness ◽  
A. R. Poletti ◽  
E. K. Warburton
Keyword(s):  
Electromagnetic Decay

a0(980) AND f0(980) MESONS AS HADRONIC MOLECULES

2009 ◽  
Vol 24 (02n03) ◽  
pp. 568-571 ◽  
Author(s):  
T. BRANZ ◽  
T. GUTSCHE ◽  
V. E. LYUBOVUTSKIJ
Keyword(s):  
Size Effects ◽  
Bound States ◽  
Finite Size ◽  
Finite Size Effects ◽  
Gauge Invariant ◽  
Electromagnetic Decay ◽  
Invariant Model ◽  
Scalar Mesons ◽  
Decay Properties ◽  
Good Agreement

We discuss a possible interpretation of the scalar mesons f0(980) and a0(980) as hadronic molecules - bound states of K and [Formula: see text] mesons. Using a phenomenological Lagrangian approach we calculate strong as well as the electromagnetic decay properties of both scalars. The covariant and gauge invariant model, which also allows for finite size effects of the hadronic molecule, delivers results in good agreement with experimental data.

scholarly journals Electromagnetic decay of theΣ0(1385)toΛγ

2011 ◽  
Vol 83 (7) ◽  
Author(s):  
D. Keller ◽  
K. Hicks ◽  
K. P. Adhikari ◽  
K. P. Adhikari ◽  
D. Adikaram ◽  
...  
Keyword(s):  
Electromagnetic Decay

Electromagnetic decay widths in a relativistic charmonium model

1976 ◽  
Vol 13 (1) ◽  
pp. 82-86 ◽  
Author(s):  
J. F. Gunion ◽  
L. F. Li
Keyword(s):  
Electromagnetic Decay ◽  
Decay Widths

scholarly journals ON ELECTRONIC SHELLS SURROUNDING CHARGED INSULATED METALLIC CLUSTERS

2005 ◽  
Vol 04 (01) ◽  
pp. 1-30 ◽  
Author(s):  
K. DIETRICH ◽  
M. GARNY ◽  
K. POMORSKI
Keyword(s):  
Surface Layer ◽  
Resonance Structure ◽  
Metallic Cluster ◽  
Metal Core ◽  
Electromagnetic Decay ◽  
Metallic Clusters ◽  
Resonance Behavior ◽  
Positively Charged

We determine the wavefunctions of electrons bound to a positively charged mesoscopic metallic cluster covered by an insulating surface layer. The radius of the metal core and the thickness of the insulating surface layer are of the order of a couple of Ångström. We study, in particular, the electromagnetic decay of externally located electrons into unoccupied internally located states that exhibit a resonance behavior. This resonance structure has the consequence that the lifetime of the "mesoscopic atoms" may vary by up to six orders of magnitude depending on the values of the parameters (from seconds to years).

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