scholarly journals Observation of Near-Threshold Resonances in the Flavin Chromophore Anions Alloxazine and Lumichrome

2018 ◽  
Vol 9 (20) ◽  
pp. 6124-6130 ◽  
Author(s):  
Edward Matthews ◽  
Caroline E. H. Dessent
Keyword(s):  
Threshold Resonances ◽  
Near Threshold

scholarly journals A practical parametrisation of line shapes of near-threshold resonances

2016 ◽  
Vol 675 (2) ◽  
pp. 022016 ◽  
Author(s):  
C Hanhart ◽  
Yu S Kalashnikova ◽  
P Matuschek ◽  
R V Mizuk ◽  
A V Nefediev ◽  
...  
Keyword(s):  
Line Shapes ◽  
Threshold Resonances ◽  
Near Threshold

Phenomenology of near-threshold resonances

2017 ◽  
Vol 80 (5) ◽  
pp. 1006-1035 ◽  
Author(s):  
A. V. Nefediev
Keyword(s):  
Threshold Resonances ◽  
Near Threshold

Parametrizing the line shapes of near-threshold resonances

2017 ◽  
Vol 48 (6) ◽  
pp. 849-850
Author(s):  
Yu. S. Kalashnikova ◽  
R. V. Mizuk ◽  
A. V. Nefediev
Keyword(s):  
Line Shapes ◽  
Threshold Resonances ◽  
Near Threshold

Compositeness of hadron resonances in chiral dynamics

2014 ◽  
Vol 23 (07) ◽  
pp. 1461003 ◽  
Author(s):  
Tetsuo Hyodo
Keyword(s):  
Renormalization Constant ◽  
Effective Range ◽  
S Wave ◽  
Independent Manner ◽  
Range Parameter ◽  
Model Independent ◽  
Threshold Resonances ◽  
Field Renormalization ◽  
Near Threshold ◽  
Hadronic States

Recent experimental observations of many unconventional hadronic states stimulate an interest in the structure of hadrons. While various internal configurations have been proposed, it is a subtle problem to identify the structure of hadron resonances in a model independent manner. Here we discuss the composite/elementary nature of hadrons using the field renormalization constant Z. In particular, we show that the magnitude of the effective range parameter re is related to the structure of s-wave near-threshold resonances.

Laser photofragment spectroscopy of near-threshold resonances in SiH +

1988 ◽  
Vol 324 (1578) ◽  
pp. 233-246 ◽  
Keyword(s):  
Ion Beam ◽  
Energy Levels ◽  
Experimental Information ◽  
Rotational Line ◽  
Line Intensities ◽  
Photodissociation Spectrum ◽  
Hyperfine Splittings ◽  
Fast Ion ◽  
Threshold Resonances ◽  
Near Threshold

Near-threshold resonances in the photodissociation cross section of SiH + have been recorded by the detection of photofragment Si + ions. The photodissociation spectrum is found to be dominated by Feshbach resonances. The first evidence for multichannel resonances in the photodissociation spectrum of a diatomic molecule is presented. Laser photodissociation spectra between 15600 cm -1 and 18750 cm -1 were recorded at a resolution of 0.0012 cm -1 by coaxial laser irradiation of a fast ion beam of SiH + . Over 70 transitions were observed, the majority of which involve excited-state levels (resonances) that lie between the Si + (2P|) + H ( 2 S) and Si+(2Pi) + H ( 2 S) dissociation limits, which are separated by 287 cm -1 . The assignments were made by combining experimental information with predictions of the vibrational and rotational energy levels obtained by numerical solution of the radial Schrodinger equation and calculations of the rotational line intensities. The experimental data were obtained by measurement of the transition frequencies, line intensities, line widths and hyperfine splittings and through examination of the effect of laser power on the linewidth. The kinetic energy released on dissociation and the photofragment angular distribution were also determined.

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